worm wheels kagf ground worms kswg worm … 9.pdfmaterials of the worm and worm wheel, lead angle,...

Worm Gear Pair

Catalog Number of Stock Gears

The Catalog Number for KHK stock gears is based on the simple formula listed below. Please order KHK gears by specifying the Catalog Numbers.

Worm Gear Pair

Feature IconsRoHS Compliant Product

Stainless Product

Re-machinableProduct

Resin Product

Finished Product Copper Alloy Product

Heat Treated ProductInjection Molded Product

Ground GearBlack Oxide coated Products

(Example)

KKWGDL • KKWGDLSDuplex Worms

m1.5~4 Page 516

KKWGGround Worm Shafts

m0.5~6 Page 522

KAGDLDuplex Worm Wheels

m1.5~4 Page 516

Reduction Ratio 20~60

KAGWorm Wheels

m0.5~1.5 Page 522


KAGFWorm Wheels

m2~6 Page 526


KSWGGround Worms

m1~6 Page 532

Series

KAGWorm Wheels

m1~6 Page 532


KBGBronze Worm Wheels

m0.5~6 Page 540


KSWSteel Worms

m0.5~6 Page 540

Series

KCGGray Iron Worm Wheels

m1~6 Page 542


KDGPlastic Worm Wheels

m0.5, 0.8 Page 556


KPGPlastic Worm Wheels

m1~3 Page 558


KSUWStainless Steel Worms

m0.5~3 Page 556

Series

Worms

K W G DL 2 - R1 K

K

Hand thread & Number ofStarts (Right hand, Single thread)Module (2)

Type (Duplex Worm)

Others (Ground Gear)

Type ( Worm)

Material (SCM440)

Material Type

K SCM440 W WormsS S45C DL Duplex WormsSU SUS303 Other Information

G Ground GearsS Worm Shafts

Material Type

A CAC702(*AℓBC2) G Worm WheelsB CAC502(*PBC2) GDL Duplex Worm WheelsC FC200D Polyacetal * ( ) indicates old JIS designation

P MC901

Worm Wheels

A G 1.5 - 20 R2Hand thread & Number of starts(Right hand, Double thread)

Number of teeth (20)

Module (1.5)

Type (Worm Wheel)

Material (CAC702)

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Characteristics

Worm Gear Pair

(NOTE 1) The material of cast hubs for KAGF and KAG worm wheels is FC200(Cast Iron). KAG worm wheels mate primarily with KSWG worms. But, for Modules 0.8 or smaller, KAG worm wheels mate with KKWG worms.

(NOTE 2) KHK stock worms and worm wheels are produced to KHK’s own precision grades. See the “Precision of Worms and Worm Wheels” in the “Selection Hints” section.

Worm Grinding Machine by Klingelnberg Worm gear testing machine by Klingelnberg

Our precision gear cutting technology enables acceleration and noise reductionSetting the proper tooth contact and the backlash is essential for using worm gears. Use KHK stock worm gears for safe, reliable use.

The simplest way to obtain a large speed reduction with high torque in a compact space is with worm gear drives. KHK stock worms and worm wheels are available in modules 0.5 to 6 and in speed ratios of 1/10 to 1/120, made in a variety of materials and styles. We also offer stock duplex worms and worm wheels with which you can obtain a very low backlash, high rotational precision system. The following table lists the main features for easy selection.

Type Catalog No. Module No. of threadsor reduction ratio

Material ( ) JIS

Heattreatment

Tooth surface finish

Precision KHK W 001KHK W 002NOTE 2

Features

Duplex Worms & Worm Wheels

Worm KKWGDL 2~4Single thread

SCM440Thermal refined, gear teeth induc-tion hardened

Ground 1 High-precision duplex worms with superior strength. A range of backlash values can be obtained by moving the worm axially.

Worm KKWGDLS 1.5~4Single thread


Ground 1Duplex worms with a shaft, excellent in accuracy and strength. A range of backlash values can be obtained by moving the worm axially.

Worm Wheel KAGDL 1.5~4 20~60

CAC702(AℓBC2)

— Cut 1 Duplex worm wheels made of aluminum bronze, excellent in wear-resistance. The pitch accuracy is first grade.

Worm

s & W

orm W

heels

Worm KKWG 0.5~6Single thread - Double thread


Ground 2Grounded finished worms with a shaft, including tooth surface quenching treatment. Allows compact design due to having small reference diameters.

Worm Wheel KAG NOTE 1 0.5~1.5 10~60

CAC702(AℓBC2)

— Cut 2 Made of aluminum bronze, have excellent wear-resistance. Wide selection is available for this item.

Worm Wheel KAGF NOTE 1 2~6 10~60

CAC702(AℓBC2)

— Cut 2 Made of aluminum bronze, have excellent wear-resistance. Allows compact design.

Worm KSWG 1~6Single thread - Triple thread

S45CGear teeth induction hardened

Ground 2 Reasonably priced ground worms. Ready-to-use finished products from the J Series, are also available.

Worm Wheel KAG NOTE 1 1~6 10~60

CAC702(AℓBC2)

— Cut 2 Made of aluminum bronze, have excellent wear-resistance. Wide selection is available for this item.

Worm KSW 0.5~6Single thread - Double thread

S45C —Cut

(Thread rolled)

4Economical, commonly used worms that have broad utility. Ready-to-use finished products from the J Series are also available.

Worm KSUW 0.5~3Single thread - Double thread

SUS303 — Cut 4Rust-resistant worms made of stainless steel suitable for mating with KDS or KPG worm wheels. Finished products for the J Series are also available.

Worm Wheel KBG 0.5~6 10~60

CAC502(PBC2)

— Cut 4Phosphorous bronze worm wheels have excellent wear resistance. Interchangeable with CG Worm Wheels, and enhances strength.

Worm Wheel KCG 1~6 10~120 FC200 — Cut 4

Economical, commonly used worm wheels that have broad utility. Available with a large selection of modules and number of teeth.

Worm Wheel KDG 0.5~0.8 10~60 Polyacetal — Cut 5 Fine pitch worm wheels made of polyacetal, a stable

plastic material.

Worm Wheel KPG 1~3 10~50 MC901 — Cut 5

Light weight and strong MC Nylon worm wheels. Suitable for use in food machinery, and can be used without lubricant.

508

KHK Technical Information

The efficiency of power transmission varies somewhat with the conditions of assembly and lubricant, but is generally 30~90% (excludes losses from bearings and churning of lu-bricants). The efficiency of KHK stock worm gear pair is given below as a reference. To learn more about strength calcula-tion, please refer to the technical information contained in the “Surface Durability of Cylindrical Worm Gearing” section on Page 96.

1. Efficiency of Worm Gear Pair

Worm rpm

Catalog No.100 300 600 900 1200 1800

KKWG0.5-R1 30 34 38 41 43 46

KKWG0.8-R1 35 40 44 47 49 53

KKWG1-R1 34 40 45 48 51 54

KKWG1.5-R1 35 42 47 51 53 57

KKWG2-R1 45 51 56 60 62 65

KKWG2.5-R1 44 51 57 61 62 67

KKWG3-R1 44 52 58 61 64 67

KKWG4-R1 50 58 64 66 70 72

KKWG5-R1 51 60 66 69 71 73

KKWG6-R1 53 61 66 70 72 75

KKWG0.5-R2 46 50 54 58 60 63

KKWG0.8-R2 51 56 61 64 66 69

KKWG1-R2 51 56 62 64 67 70

KKWG1.5-R2 52 59 64 67 69 73

KKWG2-R2 61 67 71 74 76 78

KKWG2.5-R2 60 67 72 75 76 80

KKWG3-R2 61 68 73 75 78 80

KKWG4-R2 66 73 77 79 82 84

Worm rpm

Catalog No.100 300 600 900 1200 1800

KSWG1-R1 34 40 45 48 51 54

KSWG1.5-R1 35 42 47 51 53 57

KSWG2-R1 38 45 51 55 56 61

KSWG2.5-R1 40 48 54 57 60 63

KSWG3-R1 41 49 55 58 62 65

KSWG4-R1 42 51 56 61 63 67

KSWG5-R1 46 54 60 64 66 70

KSWG6-R1 48 57 64 66 68 73

KSWG1-R2 51 56 62 64 67 70

KSWG1.5-R2 52 59 64 67 69 73

KSWG2-R2 55 62 67 70 72 75

KSWG2.5-R2 57 64 69 72 75 77

KSWG3-R2 58 66 71 73 76 78

KSWG4-R2 59 67 72 75 77 80

KSWG5-R2 62 70 75 78 79 82

KSWG6-R2 65 72 77 80 81 84

KSWG3-R3 67 74 78 80 82 84

KSWG4-R3 68 75 79 82 83 86

Efficiency of KWGDLS/KAGDL Worm Gear Pair ( %)(rpm = Rotation of worm)

Efficiency of KWG/AG, AGF Worm Gear Pair ( %)(rpm = Rotation of worm)

Efficiency of KSWG/KAG Worm Gear Pair ( %)(rpm = Rotation of worm)

Self-locking is defined as the inability of worm wheels to drive the worms. Factors affecting the self-locking feature include the materials of the worm and worm wheel, lead angle, precision of manufacture, types of bearings, lubricant, etc. Thus, it is not de-pendent simply on the lead angle. But, in general, self-locking will occur when the lead angle in a single thread worm is less than 4

。.

For systems requiring fail-safe prevention of back drive, we rec-ommend other braking mechanisms or one-way clutches.

2. Self-Locking Feature of Worm Gear Pair

Efficiency of KSW, KSUM / KCG, KBG, KPG Worm Gear Pair ( %)The efficiency is approximately as follows, depending on the assembly, loading, lubrication and rotational speed.

Catalog No. Thread Efficiency(%)

KSW/KSUWSingle thread 40~50%

Double thread 50~60%

Worm rpm

Catalog No.100 300 600 900 1200 1800

KKWGDL1.5-R1 35 42 47 51 53 57

KKWGDL2-R1 38 45 51 55 56 61

KKWGDL2.5-R1 40 48 54 57 60 63

KKWGDL3-R1 41 49 55 58 62 65

KKWGDL3.5-R1 42 50 56 61 62 65

KKWGDL4-R1 42 51 56 61 63 67

509

Worm Gear Pair

Please select the most suitable products by carefully considering the characteristics of items and contents of the product tables. It is also important to read all applicable “CAUTION” notes shown below before the final selection. Use of catalog numbers when order-ing will simplify and expedite the processing of your order.

Selection Hints

Worms and worm wheels have either right-hand or left-hand helix. The same hand worms and worm wheels comprise sets. However, the number of threads and whether they use normal module or axial module system must also be matched. The table below shows available combi-nations of KHK stock worms and worm wheels.

1. Caution in Selecting the Mating Gears

Worm KKWGDL KKWGDLS KKWG KSWG KSW KSUW

Mating Worm Wheel NOTE 1Helix/

Thread R1 R1 R2 R1 R2 R3 R1 R2 L1 L2 R1 R2

KAGDL R1

KAG0.5~1.5KAGF

R1 R2

KAGR1 R2 R3

KBG

R1 R2 L1 L2

KCG

R1 R2 L1 L2

KPG R1 R2

KDG R1 R2

Mating Worm Wheels Selection Chart

(NOTE 1) Select the same module for both members.

The gear strength values shown in the product pages were compute by assuming a certain application environment as shown below. Therefore, they should be used as reference only. We recommend that each user computes their own values by applying the actual usage conditions.

2. Caution in Selecting Gears Based on Gear Strength

Catalog No.

Item

KKWGDL KKWGDLS/KAGDL

KKWG/KAGF, KSWG/KAGKSW/KBG KSW/KCG KSUW/KPG KSUW/KDG

Formula NOTE 2 Formula of worm gear's strength (JGMA405-01) The Lewis formulaRotations of worm 600rpm 100rpm Allowable bending stress(kgf/mm2)Lubricant Lubricant for gears with proper viscosity and with anti-pressure additives

1.15(40OC with NoLubrication)

NOTE 3

1(40OC with NoLubrication)

Lubrication Oil bathStarting condition Starting torque less than 200% of rated torque. Less than 2 starts per hourDurability 26000 hoursImpact from motor Uniform loadImpact from load Uniform loadAllowable stress factor Sclim 0.67 0.70 0.42

Calculation assumptions for Bending Strength Calculation assumptions for Surface Durability

(NOTE 2)The gear strength formula is based on JGMA (Japanese Gear Manufacturer’s Association) specifications and “MC Nylon Technical Data” by Nippon Polypenco Limited. The units for the rotational speed (rpm) and the stress (kgf/mm2) are adjusted to the units needed in the formula.

(NOTE 3)Allowable bending stress of KDG worm wheel is the value we estimated.

RH single thread LH single thread

RH double thread LH double thread

The Helixes of Worms and Worm Wheels

The Maximum Allowable Sliding Speed Due to HeatCatalog No. Max. Sliding Speed (m/s)

KAGDL 15KAGF 15KAG 15KBG 10KCG 2.5KPG 1 (no lubrication)

*****

The maximum allowable sliding speed for each series of worm wheels is given on the right. Select the appropriate part by calculating the sliding speed.

Sliding speed νs (m/s)

νs =dn

19100 cos γ

d : Worm pitch dia.n : Worm speed (rpm)γ : Worm nominal lead angle * JGMA405-01510


The precision standards of KHK stock worms and worm wheels are established by us. The table below indicates the tolerance ranges for our products.

3. Selecting Worms and Worm Wheels by Precision

KHK established allowable profile and lead errors of worms with precision grades 1 to 4, by using the JIS Standard as reference. Lead errors are measured over one full revolution.

Grade Error

Module

over m0.4up to1

over m1up to 1.6

over m1.6up to 2.5

over m2.5up to 4

over m4up to 6

1Tooth profile error 8 12 16 20 25Lead error 7 9 11 13 16


3Tooth profile erro 16 23 30 37 50Lead error 20 23 27 33 37


Precision Grades of Worm Wheels (KHK W 002)

We have established standard grades 1 to 5 of worm wheels using the JIS Standard as reference. The allowable values of Single Pitch Error and Runout Error are defined for each module size and pitch diameter.

Unit : μm

Grade Error

Over m0.4 up to 1 Over m1 up to 1.6 Over m1.6 up to 2.5 Over m2.5 up to 4 Over m4 up to 6Pitch diameter (mm)

6 up to 12

12 up to 25

25 up to 50

50 up to 100

100 up to 200

12 up to 25

25 up to 50

50 up to 100

100 up to 200

200 up to 400

12 up to 25

25 up to 50

50 up to 100

100 up to 200

200 up to 400

25 up to 50

50 up to 100

100 up to 200

200 up to 400

400 up to 800

25 up to 50

50 up to 100

100 up to 200

200 up to 400

400 up to 800

1Single pitch error 5 6 7 7 9 6 7 8 9 10 7 7 8 9 11 8 9 10 11 13 9 10 11 13 14

Total composite error 21 24 26 30 34 25 28 31 35 41 27 30 33 37 43 33 36 40 46 53 37 40 45 50 57









Overall Length Tolerance of Worms

a Precision of worms (KHK W 001)

b Precision of worm wheels (KHK W 002)

c Overall Length Tolerance of Worms

Precision Grades of Worms (KHK W 001) (Unit: μm)

Series Total length(mm) Tolerance

KKWGDL Uniform 0-0.10

KSWGKSWKSUW

Less than 100 0-0.15

Over 100 0-0.20

KKWGDLSKKWG Uniform Normal tolerance

Overall Length Tolerance of Worms Wheels

Total length (mm) Tolerance

below 30 0-0.10

over 30 up to 100 0-0.15

over 100 0-0.20

(CAUTION) KPG Plastic Wheels are excluded.

511

a If you are reboring, it is important to pay special attention to locating the center in order to avoid runout. (Fig.1) The reference datum for gear cutting or grinding is the bore. (For worm shafts, it is ground portion of the shaft.) Therefore, use the bore or shaft for locating the center. If it is too difficult to do for small bores, the alternative is to use one spot on the bore and the runout of the side surface.

b To open up the bore to its maximum, calculate the bore size so that the tooth strength is weaker than the strength of the remaining material.

For machining the maximum bore diameter, it should be designed so that the thickness between hub diameter (or root diameter) to bore diameter has more strength than the gear strength. As a guide, the maximum machined bore diameter should be within 60% to 70% of the hub diameter (or root diameter). When the keyway is processed, it should be 50% to 60%. In the case FC material is used, it should be lower by 10% or more.

c Since worm wheels are molded products, they may have air bubbles inside the material. In case you find air bubbles inside when performing secondary operations, and if the bubbles are found to be troublesome, please contact your KHK distributor.

Worm Gear Pair

Application Hints

QTC METRIC GEARS PHONE: (516) 437-6700 FAX: (516) 328-3343 E-mail [email protected]

1. Caution on Performing Secondary Operations

If chucking operation using scroll chucks is to be done, we recommend the use of new or rebored jaws for improved precision.

Fig.1

2. Points of Caution in Assembling

Lathe Operation

a KHK stock worms and worm wheels are designed such that when assembled according to the specified Mounting distance with a tol-erance of H7 to H8, the backlash shown in the product tables is obtained. Do not attempt to eliminate backlash by pushing worms into worm wheels or operate with the worm shifted in the direc-tion along the tooth.

b The figure below shows the datum clamp face of a worm wheel. When assembling worm gears, be sure that the worm axis is in the center of the worm wheel face width.

c Because of the helix of the gear teeth, worms and worm wheels produce axial thrust forces. The directions of thrust depend on the hand of the helix and the direction of rotation. This is illustrated be-low in Fig.2. The bearings must be selected properly to be able to handle these thrust forces. See the “Gear Forces” section in the technical reference for more details (Page 107).

d Because large thrust forces act on worms, if they are not se-cured to the shaft firmly, they tend to shift. Use of step shafts, set screws, dowel pins, etc., are recommended. Also, check for loos-ening of bearings due to thrust forces.

In order to use KHK stock worms and worm wheels safely, care-fully read the Application Hints before proceeding. If there are questions or you require clarifications, please contact our techni-cal department or your nearest distributor.

AA

A

R helical

Driver Thrust bearing

Thrust bearing

Driver

Driver Driver

L helical

Fig.2

Direction of rotation and thrust force

Hub - one side Hub - both sides Ring geometry

Datum Clamp Face

512


3. Verifying the orientation of assembly

KSW Worms and KBG Worm Wheels used in adjusting a cloth feeding deviceKSW Worms and KCG Worm Wheels used in a rotating comb device

Application Examples

• Verify that the worm axis is perpendicular to the worm wheel axis.

• Check that the worm axis is in the center of the worm wheel face width.

• Check the Mounting distance (allowable Mounting distance H7~H8). • Confirm that the center of the worm wheel goes through the midpoint of the worm length.

BadGood Good

RH LH

Bad

Error Error

RH LH

ErrorError Error

Error

The worm cannot rotate correctly if the worm wheel is engaged close to either end of its length.

BadGood BadGood

How well the worms and worm wheels are assembled has large effects on the friction of the unit. The tooth contact at the time of assembly must be checked for correctness as shown below. See the “Tooth Contact of a Worm Gear Pair” section in the techni-cal reference for more details (Page 67).

513

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Duplex Worm GearsKKWGDL • KKWGDLS & KAGDL

Description of duplex worm gearsThe usual method of adjusting the backlash of a worm gear assembly

is to modify the center distance. Once assembled, such adjustment

requires a major rework of the gearbox housing. The use of duplex

worm gears allows the backlash adjustment to be made by axially

shifting the worm. This simplifies greatly the assembly and mainte-

nance operations. Because of the unique characteristics of the prod-

uct, please take time to study its construction and proper use.

Backlash adjustment mechanism and method of adjustment

(CAUTION)The amount of change in backlash (。j mm) in relation to the axial movement of the duplex worm shaft (V mm) can be calculated from the formula below.

Wherema = Nominal Axial Module - (0.01× Nominal Axial Module)

mb = Nominal Axial Module + (0.01× Nominal Axial Module)

Δ j=2Vmb-ma

ma+mb

(CAUTION) The KHK duplex worm is designed so that, for all modules, the backlash reduces by 0.02 mm when the worm is shifted 1 mm.

Fig.1

Application Examples

Adjustment by using Screws * Adjustment by using Shims *

Fig. 2

Adjusting Screw Adjusting Shim

The dual-lead worm is formed to give a difference between the right tooth surface and left

tooth surface so that it provides a unique tooth profile in which the tooth thickness varies

continuously, corresponding with the lead difference. (Fig.1)

The worm gear is also formed in its right and left tooth surface.

When such a worm and worm gear are set up at a constant assembly distance and the

worm is moved in the axial direction, the tooth thickness of the worm in mesh with the

worm gear changes making backlash adjustment possible.

An arrow marking on the outer circumference of the hub of the KHK duplex worm indicates the direction of assembly as well as acts as a guide for the backlash adjustment.When the worm is held with arrow mark pointing right, the tooth thickness is thinner on the right and thicker on the left. Therefore, moving the worm to the right causes the thicker teeth to come into actual engagement with the worm gear, thereby reducing the backlash. (Fig.2)(a tooth surface pitch) (b tooth surface pitch)

b tooth surface a tooth surface

(Nom

inal s

urfa

ce)

Reference toothMoving the worm in the direction of the arrow causes the backlash to decrease.

* The illustration above is a design example, not a design for machinery or a device in actual use.

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Arrow mark indicates the correct orientation of two gears when assembled. As shown, the two arrows must point in the same direction.

Point of caution during assemblyKHK duplex worm gears differs in module between the right and left

tooth surface and, therefore, you must orient the worm and worm wheel

properly. Please carefully verify the following two aspects before proceed-

ing with assembly.

1. Verifying the orientation of assembly An arrow indicating the orientation of assembly is stamped on both the duplex worm and worm wheel. When assembling the

worm and worm wheel, check the worm wheel of the arrow mark on the front such that the direction of arrow mark on the worm coincides with that on the worm wheel. Should the assembly be incorrect, the center distance “a” will become larger than the normal distance, resulting in difficulty of assembly and improper gear engagement. (Fig.3)

2. Verifying the reference position

A V-groove (60°, 0.3 mm deep line) on tip peripheral of the duplex worm tooth marks the reference tooth. The gear set is designated to

have a backlash of nearly zero (±0.045) when the reference tooth is positioned in alignment with the center of rotation of the worm wheel

with the center distance set at the value "a". (Fig.4)

Fig. 3

Fig. 4

Reference toothReference tooth

Cen

ter d

ista

nce

Duplex Worm Gears

KKWGDL • KKWGDLS & KAGDL

Cen

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Duplex WormsModule 1.5, 2KKWGDL • KKWGDLS

Duplex Worm WheelsModule 1.5, 2KAGDL

R

M

P Q

L N O

S

Vmax

G GG

G

G

G

W4

Catalog No.Nominal axial

moduleNumber of

startsNominal

lead angleHand thread Shape

Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length

LH7 M N O P Q RKKWGDL2-R1 m2 1 3°41' R W4 14 25 31 35 36 14 50


moduleNumber of

startsNominal


Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O PKKWGDLS1.5-R1 m1.5 1 3°26' R W6 190 66 12 28 18 66 25KKWGDLS2-R1 m2 1 3°41' R W6 220 75 13 36 21 75 31

Catalog No.Reduction

ratioNominal axial

moduleNo. of teeth

Helix angle Hand thread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width

AH7 B C D D' E F

KAGDL1.5-20R1KAGDL1.5-30R1KAGDL1.5-36R1KAGDL1.5-40R1KAGDL1.5-50R1KAGDL1.5-60R1

203036405060

m1.5

203036405060

3°26'3°26'3°26'3°26'3°26'3°26'

RRRRRR

H1H1H1H1H1H1

81010121212

223035354550

304554607590

334857637893

34.549.558.564.579.594.5

141414141414

101010101010

KAGDL2-20R1KAGDL2-30R1KAGDL2-36R1KAGDL2-40R1KAGDL2-50R1KAGDL2-60R1

203036405060

m2

203036405060

3°41'3°41'3°41'3°41'3°41'3°41'

RRRRRR

H1H1H1H1H1H1

121515151515

334045455060

40607280

100120

44647684

104124

46667886

106126

181818181818

151515151515

GE F

J

A B DC D’

H1

[Caution on Product Characteristics] a When the center distance is moved to reduce the backlash, the V max is the maximum amount of distance that you may shift without causing problems with the gear mesh. The V max is not a recommended value to use for adjustment when assembling.

b These worms produce axial thrust forces. See page 512 for more details.

[Caution on Product Characteristics] a The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

b Duplex worms and worm wheels must be mated in a predetermined orientation, which is indicated by the arrows. Therefore, the arrow on the wheel does not indicate the mounting direction, but the rotating direction. Please refer to the Application Hints on page 515.

Specifications

Precision grade KHK W 002 grade 1

Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 17° 30'

Material CAC702 (formerly JIS AℓBC2)

Heat treatment —

Tooth hardness —

Specifications


Referencesection of gear Axial



Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 50~60HRC

For products not categorized in our Stock Gear series', custom gear production services with short lead times is available. For details see page VI.

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JML N OK

T

S R P Q S

Vmax

G G G G

W6

Position ofreference tooth Max. allowable shift Weight

(kg)Catalog No.

S Vmax22 8 0.21 KKWGDL2-R1

Outside dia. Neck dia. Shaft dia. Position ofreference tooth Max. allowable shift Weight

(kg)Catalog No.

Q R S T Vmax28 21 26.2 17 6 0.74 KKWGDLS1.5-R135 24 30.2 22 8 1.17 KKWGDLS2-R1

Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

242424242424

——————

——————

27.53539.542.55057.5

9.8420.829.335.653.875.3

8.1817.524.630.045.463.8

6.4013.919.824.236.951.9

5.3011.716.820.631.644.7

4.6810.414.918.328.340.4

4.259.40

13.516.625.836.7

3.688.28

11.914.622.632.4

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

0.10 0.22 0.320.37 0.59 0.83


333333333333

——————

——————

35.545.551.555.565.575.5

21.044.362.375.8

115160

17.537.352.664.096.8

136

13.629.642.051.478.4

110

11.224.835.543.666.994.6

9.8421.931.338.559.584.9

8.9419.828.434.954.277.2

7.7517.425.030.747.668.1

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

0.260.510.730.861.301.88


[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 512) when per-forming modifications and/or secondary operations for safety concerns.

b Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).

[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns.

Duplex Worms

KKWGDL • KKWGDLS

Duplex Worm Wheels

KAGDL

NOTE 1 : Allowable torque for worm revolution (rpm)

Sp

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Bev

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oxes

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rod

ucts

518



GE F

J

A B DC D’

H1

R

M

P Q

L N O

S

Vmax

G GG

G

G

G

W4


moduleNumber of

startsNominal



LH7 M N O P Q RKKWGDL2.5-R1 m2.5 1 3°52' R W4 18 30 37 42 48 17 65KKWGDL3-R1 m3 1 3°54' R W4 20 35 44 50 54 20 74


moduleNumber of

startsNominal





ratioNominal axial

moduleNo. of teeth


AH7 B C D D' E F


203036405060

m2.5

203036405060

3°52'3°52'3°52'3°52'3°52'3°52'

RRRRRR

H1H1H1HBHBHB

151515151515

404045456080

507590

100125150

558095

105130155

57.582.597.5

107.5132.5157.5

222222222222

151515151515


203036405060

m3

203036405060

3°54'3°54'3°54'3°54'3°54'3°54'

RRRRRR

H1H1H1HBHBHB

202020202020

505560607080

6090

108120150180

6696

114126156186

6999

117129159189

282828282828

171717171717





Specifications






Heat treatment —

Tooth hardness —

Specifications





Material SCM440




Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

519

JML N OK

T

S R P Q S

Vmax

G G G G

W6


(kg)Catalog No.

S Vmax29 10 0.37 KWGDL2.5-R132 10 0.61 KWGDL3-R1


(kg)Catalog No.

Q R S T Vmax42 30 36.2 29 10 2.00 KWGDLS2.5-R150 34 40.2 32 10 2.95 KWGDLS3-R1

A B C D D’

( I )

J

GE F

(H)

CS

CS

HB*CS has a sand mold casting finish.

[Caution on Secondary Operations]


Duplex Worms

KKWGDL • KKWGDLS

Duplex Worm Wheels

KAGDL


(mm)

Weight

(kg)Catalog No.


373737373737

———

(10)(12)(12)

———(86)

(108)(133)

43.55663.568.58193.5

38.180.5

113138208291

31.467.194.5

115174245

24.553.175.592.4

141198

20.144.563.878.3

120170

17.639.156.068.8

106152

16.035.551.062.797.3

139

13.830.944.354.484.3

121

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

0.450.881.251.141.932.90


454545454545

———

(14)(14)(14)

———

(106)(134)(164)

5267768297

112

65.0137193235355497

53.3114160195295415

41.590.0

128157239336

33.874.7

107131202285

29.565.593.8

115178254

26.959.585.6

105163233

22.851.273.490.1

140200

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

0.811.652.322.193.264.48



a Please read “Caution on Performing Secondary Operations” (Page 512) when per-forming modifications and/or secondary operations for safety concerns.


Sp

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ears

Hel

ical

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& P

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Gea

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Gea

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air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

520



R

M

P Q

L N O

S

Vmax

G GG

G

G

G

W4


moduleNumber of

startsNominal



LH7 M N O P Q RKKWGDL3.5-R1 m3.5 1 3°47' R W4 24 44 53 60 62 23 85KKWGDL4-R1 m4 1 3°41' R W4 28 50 62 70 74 26 100


moduleNumber of

startsNominal





ratioNominal axial

moduleNo. of teeth


AH7 B C D D' E F


203036405060

m3.5

203036405060

3°47'3°47'3°47'3°47'3°47'3°47'

RRRRRR

H1H1H1HBHBHB

202020202020

556070708090

70105126140175210

77112133147182217

80.5115.5136.5150.5185.5220.5

323232323232

181818181818


203036405060

m4

203036405060

3°41'3°41'3°41'3°41'3°41'3°41'

RRRRRR

H1HBHBHBHBH5

202020202030

6065757590

120

80120144160200240

88128152168208248

92132156172212252

353535353535

202020202020

GE F

J

A B DC D’

H1





*H5 shape have a hub made from S45C cast iron.

Specifications





Material CAC702 (formerly JIS AℓBC2)*

Heat treatment —

Tooth hardness —

Specifications





Material SCM440




Sp

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ears

Hel

ical

Gea

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alG

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Rac

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P R

acks

& P

inio

nsM

iter

Gea

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evel

Gea

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crew

Gea

rsW

orm

Gea

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air

Bev

elG

earb

oxes

Oth

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rod

ucts

521

JML N OK

T

S R P Q S

Vmax

G G G G

W6


(kg)Catalog No.

S Vmax37 12 1.05 KKWGDL3.5-R144 14 1.67 KKWGDL4-R1


(kg)Catalog No.

Q R S T Vmax60 42 48.2 37 12 4.72 KKWGDLS3.5-R170 50 56.2 44 14 7.10 KKWGDLS4-R1



*CS has a sand mold casting finish.

Duplex Worms

KWGDL • KWGDLS

Duplex Worm Wheels

A B C D D’

( I )

J

GE F

(H)

CS

CS

HB

( I )

J

A B C D D’

GE F

(H)

H5

KAGDL



(mm)

Weight

(kg)Catalog No.


505050505050

———

(15)(16)(16)

———

(124)(155)(189)

61.57989.596.5

114131.5

98.5208293356538753

80.4172242295446627

62.5136193236360506

50.4111160196301425

44.298.1

141173267381

40.088.3

127156243345

33.775.7

109133207296

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

1.242.513.613.345.026.87


555555555555

—(17)(17)(17)(17)(17)

—(99)

(121)(137)(177)(200)

7191

103111131151

134284400486735

1030

109234329400605851

84.8184262320488687

67.9150215264405572

59.7132190233361515

53.4118170208324461

44.8101144177275393

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

1.763.014.184.787.07

11.5



Sp

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Gea

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Bev

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rod

ucts

522

Ground Worm ShaftsModule 0.5, 0.8KKWG

Worm WheelsModule 0.5, 0.8KAG

JMK O

P QS S

G G GG

W5

Catalog No.Axial

moduleNumber of

startsLead angle Hand thread Shape


J K L M N O P

KKWG0.5-R1KKWG0.5-R2 m0.5 1

23°11'6°20'

RR

W5W5

6565

1919

——

1212

——

3434

99


23°49'7°36'

RR

W5W5

8585

2525

——

2020

——

4040

1212

J

GE F

A B C D’

HA

a These worms produce axial thrust forces. See page 512 for more details.

a The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.


ratioTransverse

moduleNo. of teeth

Number of starts

Helix angle Hand thread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width

AH7 B C D D' E

KAG0.5-20R1KAG0.5-20R2KAG0.5-30R1KAG0.5-30R2KAG0.5-40R1

2010301540

m0.5

2020303040

12121

3°11'6°20'3°11'6°20'3°11'

RRRRR

HAHAHAHAHA

44445

99

121215

1010151520

—————

1111161621

55555

KAG0.5-50R1KAG0.5-60R1

5060

5060

11

3°11'3°11'

RR

HAHA

55

2025

2530

——

2631

55


2010301540

m0.8

2020303040

12121

3°49'7°36'3°49'7°36'3°49'

RRRRR

HAHAHAHAHA

55556

1212181820

1616242432

—————

17.617.625.625.633.6

88888

KAG0.8-50R1KAG0.8-60R1

5060

5060

11

3°49'3°49'

RR

HAHA

88

2525

4048

——

41.649.6

88

[Caution on Product Characteristics]


Specifications




Normalpressure angle 20°


Heat treatment —

Tooth hardness —

Specifications





Material SCM440




Sp

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ears

Hel

ical

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& P

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Gea

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Gea

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Gea

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orm

Gea

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air

Bev

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earb

oxes

Oth

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rod

ucts

523

Outside dia. Neck dia. Shaft dia. Weight

(kg)Catalog No.

Q R Sh7

1010

——

66

0.0180.018

KKWG0.5-R1KKWG0.5-R2

13.613.6

——

88

0.0430.043


[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or sec-ondary operations for safety concerns.

b Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm). Use carbide tools for the modification of the shaft area near the bottom land.

Ground Worm Shafts

KKWG

Worm Wheels

KAGDL


Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

77777

1212121212

—————

—————

9.59.5

121214.5

0.520.511.091.091.86

0.440.420.940.921.60

0.360.330.770.731.34

0.300.270.650.601.15

0.260.240.580.541.02

0.240.220.530.490.94

0.210.190.480.430.84

0.02~0.140.02~0.140.02~0.140.02~0.140.02~0.14

0.00560.00560.0120.0120.020


77

1212

——

——

1719.5

2.823.94

2.423.41

2.052.89

1.772.50

1.582.26

1.462.08

1.301.87

0.02~0.140.02~0.14

0.0350.053

KAG0.5-50R1KAG0.5-60R1

88888

1616161616

—————

—————

1414181822

1.781.763.773.756.45

1.501.443.213.145.49

1.211.112.622.464.55

1.000.912.202.023.87

0.880.801.961.803.46

0.820.741.811.653.19

0.710.631.611.452.83

0.06~0.170.06~0.170.06~0.170.06~0.170.06~0.17

0.0180.0180.0430.0430.068


88

1616

——

——

2630

9.7513.6

8.3111.7

6.949.77

5.948.39

5.347.63

4.967.05

4.386.27

0.06~0.170.06~0.17

0.100.14

KAG0.8-50R1KAG0.8-60R1


Sp

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Gea

rsW

orm

Gea

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air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

524

Ground Worm ShaftsModule 1, 1.5KKWG

Worm WheelsModule 1, 1.5KAG

JM NLK O

S R P Q S

GGGG

W6

Catalog No.Axial

moduleNumber of



J K L M N O P

KKWG1-R1KKWG1-R2 m1 1

23°35'7°08'

RR

W6W6

140140

3535

1010

3030

1010

5555

1616


23°26'6°51'

RR

W6W6

190190

5050

1515

4040

1515

7070

2525

GE F

J

A B D’DC

H1




ratioTransverse

moduleNo. of teeth

Number of starts


AH7 B C D D' E

KAG1-20R1KAG1-20R2KAG1-30R1KAG1-30R2KAG1-40R1

2010301540

m1

2020303040

12121

3°35'7°08'3°35'7°08'3°35'

RRRRR

H1H1H1H1H1

66668

1616202026

2020303040

2222323242

2323333343

1010101010

KAG1-50R1KAG1-60R1

5060

5060

11

3°35'3°35'

RR

H1H1

810

3035

5060

5262

5363

1010


2010301540

m1.5

2020303040

12121

3°26'6°51'3°26'6°51'3°26'

RRRRR

H1H1H1H1H1

88

101012

2222303035

3030454560

3333484863

34.534.549.549.564.5

1414141414

KAG1.5-50R1KAG1.5-60R1

5060

5060

11

3°26'3°26'

RR

H1H1

1212

4550

7590

7893

79.594.5

1414



Specifications






Heat treatment —

Tooth hardness —

Specifications





Material SCM440




Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

525


(kg)Catalog No.

Q R S

1818

1313

18.218.2

0.250.25

KKWG1-R1KKWG1-R2

2828

2121

26.226.2

0.740.74


a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns.



Ground Worm Shafts

KKWG



(mm)

Weight

(kg)Catalog No.


1010101010

2020202020

—————

—————

1818232328

3.353.317.087.03

12.1

2.792.695.985.84

10.2

2.232.064.844.568.43

1.831.684.053.727.12

1.631.483.633.336.38

1.501.353.313.035.86

1.301.152.922.635.13

0.08~0.190.08~0.190.08~0.190.08~0.190.08~0.19

0.0380.0380.0780.0780.13


1010

2020

——

——

3338

18.325.6

15.521.8

12.918.1

10.915.4

9.8714.1

9.0912.9

7.9511.4

0.08~0.190.08~0.19

0.200.29

KAG1-50R1KAG1-60R1

1010101010

2424242424

—————

—————

27.5 27.5 353542.5

9.849.72

20.820.735.6

8.187.87

17.517.130.0

6.405.92

13.913.124.2

5.304.87

11.710.820.6

4.684.25

10.49.56

18.3

4.253.839.408.58

16.6

3.683.278.287.46

14.6

0.10~0.210.10~0.210.10~0.210.10~0.210.10~0.21

0.100.100.220.220.37


1010

2424

——

——

5057.5

53.875.3

45.463.8

36.951.9

31.644.7

28.340.4

25.836.7

22.632.4

0.10~0.210.10~0.21

0.590.83

KAG1.5-50R1KAG1.5-60R1


Worm Wheels

KAG

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

526

Ground Worm ShaftsModule 2, 2.5KKWG

Worm WheelsModule 2, 2.5KAGF

JM NLK O

S R P Q S

GGGG

W6

Catalog No.Axial

moduleNumber of



J K L M N O P


25°12'

10°18'RR

W6W6

200200

3535

2525

4040

2525

7575

2222


24°46'9°28'

RR

W6W6

250250

5050

2727

4646

2727

100100

3030


ratioTransverse

moduleNo. of teeth

Number of starts

Profile shiftcoefficient

Helix angle

Hand thread

ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width(R)

AH7 B C D D' E FKAGF2-20R1KAGF2-20R2KAGF2-25R1KAGF2-30R1KAGF2-30R2

2010253015 m2

2020253030

12112

−0.5−0.5−0.5−0.5−0.5

5°12'10°18'

5°12'5°12'

10°18'

RRRRR

H6H6H6H6H6

1212121212

3232353838

4040506060

4242526262

4444546464

1818181818

1212121212

KAGF2-36R1KAGF2-40R1KAGF2-48R1KAGF2-50R1KAGF2-60R1

3640485060

3640485060

11111

0−0.5+0.5−0.5−0.5

5°12'5°12'5°12'5°12'5°12'

RRRRR

H6H8H9H9H9

1212121212

4045505050

728096

100120

7682

102102122

7884

104104124

1818181818

1212121212

KAGF2.5-20R1KAGF2.5-20R2KAGF2.5-25R1KAGF2.5-30R1KAGF2.5-30R2

2010253015 m2.5

2020253030

12112

00000

4°46'9°28'4°46'4°46'9°28'

RRRRR

H6H6H6H6H6

1212121212

3535404040

505062.57575

555567.58080

57.557.57082.582.5

2020202020

1515151515


3640485060

3640485060

11111

00000

4°46'4°46'4°46'4°46'4°46'

RRRRR

H8H9H9H9H9

1212121212

4545505560

90100120125150

95105125130155

97.5107.5127.5132.5157.5

2020202020

1515151515

GEF’ F

A B C D D’

J

H6

a These worms produce axial thrust forces. See page 512 for more details.[Caution on Product Characteristics]


b There may be space in the casting between the two materials, but it will not affect the joint strength.

*H8, H9 shape have a hub made from FC200 cast iron.

Specifications






Heat treatment —

Tooth hardness —

Specifications





Material SCM440



Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

527


(kg)Catalog No.

Q R S

2626

1717

25.225.2

0.640.64

KKWG2-R1KKWG2-R2

3535

2323

30.230.2

1.271.27






Ground Worm Shafts

KKWG


b The tooth and the hub areas, fastened by casting, are designed to have higher hardness than other parts of the gear. However, please avoid areas other than the hub. Also, the strength may decrease if secondary operations are performed.


(mm)

Weight

(kg)Catalog No.


55555

3535353535

—————

—————

3030354040

19.419.929.441.142.3

16.116.124.534.535.0

12.812.219.627.727.0

10.59.99

16.323.222.1

9.308.75

14.420.719.9

8.497.92

13.218.817.7

7.316.74

11.416.415.4

0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24

0.250.250.370.510.51


55555

3535353535

——

(10)(12)(12)

——

(76)(81)(96)

4750606070

57.870.398.5

106149

48.659.283.089.5

126

39.348.168.073.4

103

33.240.757.962.588.4

29.636.451.956.280.3

27.033.247.551.573.3

23.628.941.344.964.2

0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24

0.730.851.141.141.51


55555

4040404040

—————

—————

404046.2552.552.5

35.134.653.074.173.6

29.027.943.962.060.6

22.620.934.849.146.2

18.617.128.941.237.8

16.314.825.336.733.2

14.813.423.032.829.9

12.811.320.028.725.8

0.14~0.270.14~0.270.14~0.270.14~0.270.14~0.27

0.440.440.660.870.87


55555

4040404040

—(12)(13)(13)(13)

—(80)(97)

(100)(125)

60657577.590

104127178192268

87.4106149161226

69.885.4

121130183

59.072.4

103111157

51.863.790.898.4

141

47.157.983.190.0

128

41.250.572.278.3

112

0.14~0.270.14~0.270.14~0.270.14~0.270.14~0.27

1.191.231.721.922.59



Worm Wheels

J

GE FF’

A B C D D’

H8

( I )

J

A B DC D’

GEF’ F

(H)

CS

CS

H9

KAG


Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

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crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

528

Ground Worm ShaftsModule 3, 4KKWG

Worm WheelsModule 3, 4KAGF

JM NLK O

S R P Q S

GGGG

W6

Catalog No.Axial

moduleNumber of



J K L M N O P


24°31'8°58'

RR

W6W6

300300

5555

3030

6060

3030

125125

3838


25°43'

11°19'RR

W6W6

360360

7070

32.532.5

7575

32.532.5

150150

4040


ratioTransverse

moduleNo. of teeth

Number of starts


Helix angle

Hand thread



2010253015 m3

2020253030

12112

+0.333+0.333

0+0.333+0.333

4°31'8°58'4°31'4°31'8°58'

RRRRR

H6H6H6H8H8

2020202020

5050555555

6060759090

6868819898

717184

101101

2525252525

17.517.517.517.517.5


3640485060

3640485060

11111

+0.333+0.333+0.333+0.333+0.333

4°31'4°31'4°31'4°31'4°31'

RRRRR

H8H9H9H9H9

2020202020

6065707580

108120144150180

116128152158188

119131155161191

2525252525

17.517.517.517.517.5


2010253015 m4

2020253030

12112

00000

5°43'11°19'

5°43'5°43'

11°19'

RRRRR

H6H6H6H8H8

2020202020

6060656565

8080

100120120

8888

108128128

9292

112132132

3030303030

2020202020


3640485060

3640485060

11111

00000

5°43'5°43'5°43'5°43'5°43'

RRRRR

H9H9H9H9H0

20202020

160

70809090—

144160192200240

152168200208248

156172204212252

3030303030

20202020

7

GEF’ F

A B C D D’

J

H6

[Caution on Product Characteristics] a These worms produce axial thrust forces. See page 512 for more details.




Specifications






Heat treatment —

Tooth hardness —

Specifications





Material SCM440



Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

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iter

Gea

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Gea

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crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

529


(kg)Catalog No.

Q R S

4444

3030

40.240.2

2.662.66

KKWG3-R1KKWG3-R2

4848

2929

45.245.2

3.853.85

KKWG4-R1KKWG4-R2


Ground Worm Shafts

KKWG




(mm)

Weight

(kg)Catalog No.


7.57.57.57.57.5

5050505050

—————

—————

505056.56565

59.760.290.2

126128

49.148.274.3

105105

38.336.158.883.179.8

31.529.548.969.665.2

27.525.442.661.057.2

25.123.039.055.451.6

21.519.433.548.244.3

0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29

0.880.881.241.631.63


7.57.57.57.57.5

5050505050

—(16)(15)(15)(15)

—(95)

(120)(125)(155)

74809295

110

178216303326457

148180252272383

118145204220310

99.7122174188265

87.5108153166237

79.498.0

141152217

69.184.9

121132188

0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29

2.252.523.283.624.76


1010101010

6060606060

—————

—————

6060708080

123127186260270

101101153216220

78.876.0

121171168

64.661.9

100143137

56.353.287.3

125120

51.548.379.9

114108

43.840.568.598.492.2

0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32

1.771.772.563.283.28


1010101015

6060606030

(20)(23)(20)(20)

8

(113)(128)(160)(168)204

92100116120140

366445624673941

304370519560788

243297420454638

204251356385544

179220314340486

164201288312444

141173248269385

0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32

4.105.256.957.353.60






Worm WheelsHEF’

JI A C D D’

F

H0

J

GE FF’

A B C D D’

H8

( I )

J

A B DC D’

GEF’ F

(H)

CS

CS

H9

KAGF


Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

530

Ground Worm ShaftsModule 5, 6KKWG

Specifications





Material SCM440



Worm WheelsModule 5, 6KAGF

JM NLK O

S R P Q S

GGGG

W6

Catalog No. Axial module

Number of starts

Lead angle Hand thread ShapeTotal length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O PKKWG5-R1 m5 1 5°43' R W6 400 75 30 90 30 175 50KKWG6-R1 m6 1 5°43' R W6 400 60 40 100 40 160 60


ratioTransverse

moduleNo. of teeth

Number of starts


Helix angle

Hand thread



2025303640 m5

2025303640

11111

00000

5°43'5°43'5°43'5°43'5°43'

RRRRR

H6H6H9H9H9

2222222222

75757590

110

100125150180200

110135160190210

115140165195215

3535353535

2323232323

KAGF5-48R1KAGF5-50R1KAGF5-60R1

485060

485060

111

000

5°43'5°43'5°43'

RRR

H0H0H0

140150200

———

240250300

250260310

255265315

353535

7.57.57.5


2025303640 m6

2025303640

11111

00000

5°43'5°43'5°43'5°43'5°43'

RRRRR

H6H6H9H9H0

25252525

130

8590

100110

—

120150180216240

132162192228252

138168198234258

4040404040

23232323

8KAGF6-48R1KAGF6-50R1KAGF6-60R1

485060

485060

111

000

5°43'5°43'5°43'

RRR

H0H0H0

180190250

———

288300360

300312372

306318378

404040

888

GEF’ F

A B C D D’

J

H6



b There may be space in the casting between the two materials, but it will not affect the joint strength.c For H0-shaped products with a bore size of Ø190 or more, the bore tolerance is H8.


Specifications






Heat treatment —

Tooth hardness —

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

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air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

531


(kg)Catalog No.

Q R S60 36 50.2 5.75 KKWG5-R172 44 60.2 8.09 KKWG6-R1

HEF’

JI A C D D’

F

H0

( I )

J

A B DC D’

GEF’ F

(H)

CS

CS

H9*CS has a sand mold casting finish.





Ground Worm Shafts

KKWG

Worm Wheels


Hub width (L) Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F' G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

1212121212

7070707070

——

(25)(25)(26)

——

(115)(140)(162)

7587.5

100115125

211319446627763

172261369519632

134206291414506

108168239343421

95.0147211302371

86.2134191274337

72.7114164234288

0.22~0.350.22~0.350.22~0.350.22~0.350.22~0.35

3.264.485.377.709.97


17.517.517.5

353535

101010

195205255

145150175

107011501610

886956

1340

715772

1090

598646913

530574820

483523744

411446639

0.22~0.350.22~0.350.22~0.35

5.045.286.48


1212121220

7575757540

——

(30)(30)12

——

(135)(172)190

90105120138150

329497696978

1190

268405572806981

208319451641784

167259368528648

146227325466572

131204290417513

110173248355436

0.24~0.370.24~0.370.24~0.370.24~0.370.24~0.37

4.957.149.21

12.56.20


202020

404040

121212

240250310

174180210

167018002520

138014802090

111012001680

920994

1410

816885

1260

735796

1130

628676969

0.24~0.370.24~0.370.24~0.37

7.588.00

10.0



KAGF


Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

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Rac

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P R

acks

& P

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Gea

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Gea

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crew

Gea

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orm

Gea

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air

Bev

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earb

oxes

Oth

erP

rod

ucts

532

Ground WormsModule 1, 1.5KSWG


Catalog No.• : J Series (Available-on-request)

Axialmodule

Number of starts

Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)

LH7 M N O P Q Q'

KSWG1-R1 KSWG1-R2 m1 1

23°35'7°08'

RR

W2W2

88

——

1616

1818

——

——

——

KSWG1.5-R1

•KSWG1.5-R1J10m1.5

1 3°26' R W1W1K

1010 20 25 28 30 10 —

KSWG1.5-R2•KSWG1.5-R2J10 2 6°51' R W1

W1K1010 20 25 28 30 10 —

RS

N OL

G

W2

GE F

J

A B D’DC

H1


ratioTransverse

moduleNo. of teeth

Number of starts


AH7 B C D D' E


2010301540

m1

2020303040

12121

3°35'7°08'3°35'7°08'3°35'

RRRRR

H1H1H1H1H1

66668

1616202026

2020303040

2222323242

2323333343

1010101010

KAG1-50R1KAG1-60R1

5060

5060

11

3°35'3°35'

RR

H1H1

810

3035

5060

5262

5363

1010


2010301540

m1.5

2020303040

12121

3°26'6°51'3°26'6°51'3°26'

RRRRR

H1H1H1H1H1

88

101012

2222303035

3030454560

3333484863

34.534.549.549.564.5

1414141414

KAG1.5-50R1KAG1.5-60R1

5060

5060

11

3°26'3°26'

RR

H1H1

1212

4550

7590

7893

79.594.5

1414

[Caution on Product Characteristics] a For W2-shaped products, a set screw is included. When setting up the mating wheel, make sure no friction occurs within the set screw.


[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. b Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).



Specifications






Heat treatment —

Tooth hardness —

Specifications

Precision grade KHK W 001 grade 2 *




Material S45C

Heat treatment Teeth induction hardened


* The precision grade of J Series products is equivalent to the value shown in the table.

Sp

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ears

Hel

ical

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Gea

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Gea

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Bev

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earb

oxes

Oth

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rod

ucts

533

Total length Keyway Set screw Weight

(kg)Catalog No.

• : J Series (Available-on-request)R Width×Depth Size S

3232

——

M4M4

55

0.0370.037

KSWG1-R1 KSWG1-R2

40 —4 x 1.8

—M4

—5

0.120.11

KSWG1.5-R1•KSWG1.5-R1J10

40 —4 x 1.8

—M4

—5

0.120.11

KSWG1.5-R2•KSWG1.5-R2J10



Ground Worms

KSWG

RP Q

L M N O

G

W1

S

RP Q

L M N O

G

W1K

Worm Wheels

KAG


(mm)

Weight

(kg)Catalog No.


1010101010

2020202020

—————

—————

1818232328

3.353.317.087.03

12.1

2.792.695.985.84

10.2

2.232.064.844.568.43

1.831.684.053.727.12

1.631.483.633.336.38

1.501.353.313.035.86

1.301.152.922.635.13

0.08~0.190.08~0.190.08~0.190.08~0.190.08~0.19

0.0380.0380.0780.0780.13


1010

2020

——

——

3338

18.325.6

15.521.8

12.918.1

10.915.4

9.8714.1

9.0912.9

7.9511.4

0.08~0.190.08~0.19

0.200.29

KAG1-50R1KAG1-60R1

1010101010

2424242424

—————

—————

27.5 27.5 353542.5

9.849.72

20.820.735.6

8.187.87

17.517.130.0

6.405.92

13.913.124.2

5.304.87

11.710.820.6

4.684.25

10.49.56

18.3

4.253.839.408.58

16.6

3.683.278.287.46

14.6

0.10~0.210.10~0.210.10~0.210.10~0.210.10~0.21

0.100.100.220.220.37


1010

2424

——

——

5057.5

53.875.3

45.463.8

36.951.9

31.644.7

28.340.4

25.836.7

22.632.4

0.10~0.210.10~0.21

0.590.83

KAG1.5-50R1KAG1.5-60R1


Series

[Caution on J series] a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.b Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d Areas of products which have been re-worked will not be black oxide coated.e For products having a tapped hole, a set screw is included.

Sp

urG

ears

Hel

ical

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alG

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Rac

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& P

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Gea

rsB

evel

Gea

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crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

534

Ground WormsModule 2, 2.5KSWG


R

P QQ’

L M N O

G

W3


ratioTransverse

moduleNo. of teeth

Number of starts


AH7 B C D D' E


2010301540

m2

2020303040

12121

3°41'7°21'3°41'7°21'3°41'

RRRRR

H1H1H4H4H4

1212121212

3333404045

4040606080

4444646484

4646666686

1818181818

KAG2-50R1KAG2-60R1

5060

5060

11

3°41'3°41'

RR

H5H5

1212

5055

100120

104124

106126

1818


2010301540

m2.5

2020303040

12121

3°52'7°42'3°52'7°42'3°52'

RRRRR

H1H1H4H4H5

1212121215

3535404045

50507575

100

55558080

105

57.557.582.582.5

107.5

2020202020

KAG2.5-50R1KAG2.5-60R1

5060

5060

11

3°52'3°52'

RR

H5H5

1515

5560

125150

130155

132.5157.5

2020


Axialmodule

Number of starts


LH7 M N O P Q Q' KSWG2-R1

•KSWG2-R1J12

•KSWG2-R1J14m2

1 3°41' RW3W3KW3K

121214

25 31 35 32 15 3

KSWG2-R2

•KSWG2-R2J12

•KSWG2-R2J142 7°21' R

W3W3KW3K

121214

25 31 35 32 15 3

KSWG2.5-R1

•KSWG2.5-R1J15

•KSWG2.5-R1J16

•KSWG2.5-R1J17m2.5

1 3°52' R

W3W3KW3KW3K

15151617

30 37 42 45 17 3

KSWG2.5-R2

•KSWG2.5-R2J15

•KSWG2.5-R2J16

•KSWG2.5-R2J17

2 7°42' R

W3W3KW3KW3K

15151617

30 37 42 45 17 3

GE F

J

A B D’DC

H1*H8, H9 shape have a hub made from FC200 cast iron.



Specifications






Heat treatment —

Tooth hardness —

Specifications





Material S45C




Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

535


(kg)Catalog No.


50—

4 x 1.85 x 2.3

—M4M4

—7.57.5

0.210.210.19

KSWG2-R1

•KSWG2-R1J12

•KSWG2-R1J14

50—

4 x 1.85 x 2.3

—M4M4

—7.57.5

0.210.210.19

KSWG2-R2

•KSWG2-R2J12

•KSWG2-R2J14

65

—5 x 2.35 x 2.35 x 2.3

—M4M4M4

—8.58.58.5

0.400.390.380.37

KSWG2.5-R1

•KSWG2.5-R1J15

•KSWG2.5-R1J16

•KSWG2.5-R1J16

65

—5 x 2.35 x 2.35 x 2.3

—M4M4M4

—8.58.58.5

0.400.390.380.37

KSWG2.5-R2

•KSWG2.5-R2J15

•KSWG2.5-R2J16

•KSWG2.5-R2J17

J

G

B C D D’

E F

A

H4

( I )

J

A B C D D’

GE F

(H)

CS

CS H5

[Caution on Product Characteristics]a These worms produce axial thrust forces. See page 512 for more details.

[Caution on Secondary Operations]a Please read “Caution on Performing Secondary Operations” (Page 512) when per-

forming modifications and/or secondary operations for safety concerns. b Due to the gear teeth being induction hardened, no secondary operations can be

performed on tooth areas including the bottom land (approx. 1 to 2 mm).

Ground Worms

KSWG

Series

R

P QQ’

L M N O

GS

W3K

Worm Wheels

KAG


(mm)

Weight

(kg)Catalog No.


1515151515

3333333333

—————

—————

35.5 35.5 45.5 45.5 55.5

21.020.744.344.075.8

17.516.837.336.564.0

13.612.629.627.851.4

11.210.324.822.843.6

9.848.93

21.920.138.5

8.948.05

19.818.034.9

7.756.89

17.415.730.7

0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24

0.260.260.510.510.85


1515

3333

(8)(11)

(83)(100)

65.5 75.5

115160

96.8136

78.4110

66.994.6

59.584.9

54.277.2

47.668.1

0.11~0.240.11~0.24

1.051.52

KAG2-50R1KAG2-60R1

1414141414

3434343434

————

(11)

————

(81)

43.5 43.5 565668.5

34.634.273.272.7

125

28.527.461.059.6

105

22.320.648.345.584.0

18.316.840.537.271.2

16.014.535.532.662.5

14.613.132.229.457.0

12.511.128.125.349.5

0.14~0.270.14~0.270.14~0.270.14~0.270.14~0.27

0.390.390.790.791.11


1414

3434

(12)(12)

(106)(130)

8193.5

189265

158222

128180

109154

96.7138

88.5126

76.7110

0.14~0.270.14~0.27

1.702.32

KAG2.5-50R1KAG2.5-60R1





[Caution on J series]a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the

day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.b Number of products we can process for one order is 1 to 20 units. For quantities of 21 or

more pieces, we need to quote price and lead time.c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d Areas of products which have been re-worked will not be black oxide coated.e For products having a tapped hole, a set screw is included.

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

536

Ground WormsModule 3, 4KSWG

Specifications





Material S45C



Worm WheelsModule 3, 4

Specifications






Heat treatment —

Tooth hardness —

R

P QQ’

L M N O

G

W3


ratioTransverse

moduleNo. of teeth

Number of starts


AH7 B C D D' EKAG3-20R1KAG3-20R2KAG3-30R1KAG3-30R2KAG3-30R3

2010301510 m3

2020303030

12123

3°54'7°46'3°54'7°46'

11°34'

RRRRR

H1H1H4H4H4

2020202020

5050555555

6060909090

6666969696

6969999999

2525252525

KAG3-40R1KAG3-45R3KAG3-50R1KAG3-60R1

40155060

40455060

1311

3°54'11°34'

3°54'3°54'

RRRR

H5H5H5H5

20202020

65707585

120135150180

126141156186

129144159189

25252525


2010301510 m4

2020303030

12123

3°41'7°21'3°41'7°21'

10°57'

RRRRR

H1H1H4H4H4

2020202020

6060656565

8080

120120120

8888

128128128

9292

132132132

3030303030


40155060

40455060

1311

3°41'10°57'

3°41'3°41'

RRRR

H5H5H5H5

20202020

809090

100

160180200240

168188208248

172192212252

30303030


Axialmodule

Number of starts


LH7 M N O P Q Q' KSWG3-R1

•KSWG3-R1J17

•KSWG3-R1J18

•KSWG3-R1J19

•KSWG3-R1J20

m3

1 3°54' R

W3W3KW3KW3KW3K

1617181920

35 44 50 50 20 4

KSWG3-R2

•KSWG3-R2J17

•KSWG3-R2J18

•KSWG3-R2J19

•KSWG3-R2J20

2 7°46' R

W3W3KW3KW3KW3K

1617181920

35 44 50 50 20 4

KSWG3-R3

•KSWG3-R3J17

•KSWG3-R3J18

•KSWG3-R3J19

•KSWG3-R3J20

3 11°34' R

W3W3KW3KW3KW3K

1617181920

35 44 50 50 20 4

KSWG4-R1 KSWG4-R2 KSWG4-R3

m4123

3°41'7°21'

10°57'

RRR

W3W3W3

222222

505050

626262

707070

707070

252525

555





KAG

GE F

J

A B D’DC

H1


Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

537



Ground Worms

KSWG

R

P QQ’

L M N O

GS

W3K

Series


(kg)Catalog No.


74

—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.660.640.620.600.58

KSWG3-R1

•KSWG3-R1J17

•KSWG3-R1J18

•KSWG3-R1J19

•KSWG3-R1J20

74

—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.660.640.620.600.58

KSWG3-R2

•KSWG3-R2J17

•KSWG3-R2J18

•KSWG3-R2J19

•KSWG3-R2J20

74

—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.660.640.620.600.58

KSWG3-R3

•KSWG3-R3J17

•KSWG3-R3J18

•KSWG3-R3J19

•KSWG3-R3J20100100100

———

———

———

1.821.821.82

KSWG4-R1 KSWG4-R2 KSWG4-R3

Worm Wheels

J

G

B C D D’

E F

A

H4

( I )

J

A B C D D’

GE F

(H)

CS

CS H5

KAG


(mm)

Weight

(kg)Catalog No.


1818181818

4343434343

—————

—————

5252 6767 67

59.558.7

126125129

48.846.9

104.3102103

38.035.182.477.677.1

30.928.468.462.862.4

27.024.559.955.153.8

24.722.254.549.748.7

20.918.546.942.240.6

0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29

0.750.751.461.461.46


18181818

43434343

(10)(11)(15)(15)

(103)(120)(130)(155)

8289.5 97

112

215274325455

179224270380

143171219308

120138185261

106121163233

96.4109150213

82.592.6

128183

0.16~0.290.16~0.290.16~0.290.16~0.29

2.032.443.224.52


2020202020

5050505050

—————

—————

7171919191

115114244242250

93.690.0

200196198

72.767.2

158148147

58.253.5

129118117

51.146.4

114104102

45.741.2

10192.290.2

38.434.186.377.674.7

0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32

1.531.533.003.003.00


20202020

50505050

(15)(16)(16)(17)

(133)(153)(173)(210)

111121131151

417531630881

343430519730

274326418589

226259347491

200229309441

179202277395

152170236337

0.19~0.320.19~0.320.19~0.320.19~0.32

4.325.446.258.74



[Caution on J series]a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the day ordered), after placing an order. Please al-

low additional shipping time to get to your local distributor.b Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d Areas of products which have been re-worked will not be black oxide coated.e For products having a tapped hole, a set screw is included.

[Caution on Secondary Operations]a Please read “Caution on Performing Secondary Operations” (Page 512) when perform-

ing modifications and/or secondary operations for safety concerns. b Due to the gear teeth being induction hardened, no secondary operations can be per-

formed on tooth areas including the bottom land (approx. 1 to 2 mm).

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

538

Ground WormsModule 5, 6KSWG

Worm WheelsModule 5, 6

R

P QQ’

L M N O

G

W3


ratioTransverse

moduleNo. of teeth

Number of starts


AH7 B C D D' E


2010301540

m5

2020303040

12121

4°05'8°08'4°05'8°08'4°05'

RRRRR

H4H4H5H5H5

2222222222

75757575

110

100100150150200

110110160160210

115115165165215

3535353535

KAG5-50R1KAG5-60R1

5060

5060

11

4°05'4°05'

RR

H5H5

2222

120130

250300

260310

265315

3535


2010301540

m6

2020303040

12121

4°17'8°32'4°17'8°32'4°17'

RRRRR

H4H4H5H5H5

2525252525

8585

100100120

120120180180240

132132192192252

138138198198258

4040404040

KAG6-50R1KAG6-60R1

5060

5060

11

4°17'4°17'

RR

H5H5

2525

130150

300360

312372

318378

4040

Catalog No. Axialmodule

Number of starts


LH7 M N O P Q Q'

KSWG5-R1KSWG5-R2 m5 1

24°05'8°08'

RR

W3W3

2525

5656

7070

8080

8585

3030

55

KSWG6-R1KSWG6-R2 m6 1

24°17'8°32'

RR

W3W3

3030

6363

8080

9292

100100

3535

55





KAG

GE F

J

A B D’DC

H1

Specifications






Heat treatment —

Tooth hardness —

Specifications





Material S45C




Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

539

Total length Set screw Weight

(kg)Catalog No.

R Size S

120120

——

——

2.782.78

KSWG5-R1KSWG5-R2

140140

——

——

4.154.15

KSWG6-R1KSWG6-R2

J

G

B C D D’

E F

A

H4

( I )

J

A B C D D’

GE F

(H)

H5

[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. b Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).



Ground Worms

KSWG

Worm Wheels

KAG


(mm)

Weight

(kg)Catalog No.


NOTE 1. Allowable torques for worm rotation (rpm)

2525252525

6060606060

——

(21)(21)(23)

——

(120)(120)(168)

8585

110110135

202200427425731

163157348340597

127117275259478

10193.2

224206394

88.480.2

196180346

79.071.1

175159309

65.558.1

147132259

0.22~0.350.22~0.350.22~0.350.22~0.350.22~0.35

2.792.794.754.758.84


2525

6060

(23)(24)

(215)(260)

160185

11101550

9031270

7291030

605855

534763

479682

402575

0.22~0.350.22~0.35

12.717.6

KAG5-50R1KAG5-60R1

3030303030

7070707070

——

(26)(26)(28)

——

(142)(142)(200)

100100130130160

315314666668

1140

252244538532923

196182424403738

157145346321609

135124300278528

121110267246472

99.689.3

224203394

0.24~0.370.24~0.370.24~0.370.24~0.370.24~0.37

4.534.538.528.52

14.2


3030

7070

(30)(30)

(258)(312)

190220

17202410

14001960

11301580

9351320

8161170

7331040

611875

0.24~0.370.24~0.37

21.029.7

KAG6-50R1KAG6-60R1

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

540

Steel WormsModule 0.5, 0.8KSW

Specifications


Referencesection of gear Normal plane



Material S45C

Heat treatment —

Tooth hardness (less than 194HB)

RS

N OL

W2

Bronze Worm WheelsModule 0.5, 0.8KBG

Specifications





Material CAC502 (formerly JIS PBC2)

Heat treatment —

Tooth hardness —

J

GE F

A B C D’

L

HAT


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' EKBG0.8-20R1KBG0.8-20R2KBG0.8-30R1KBG0.8-30R2KBG0.8-40R1

2010301540

m0.8

2020303040

12121

3°17'6°34'3°17'6°34'3°17'

RRRRR

HAHAHAHAHA

55556

1212181820

16.0316.1124.0424.1632.05

—————

17.617.625.625.633.6

99999

KBG0.8-50R1KBG0.8-60R1

5060

5060

11

3°17'3°17'

RR

HAHA

88

2525

40.0648.08

——

41.649.6

99

Catalog No. Normal module

Number of starts


LH8 M N O P Q Q'KSW0.5-R1KSW0.5-R2 m0.5 1

22°36'5°13'

RR

W2W2

55

——

1111

1212

——

——

——

KSW0.8-R1KSW0.8-R2 m0.8 1

23°17'6°34'

RR

W2W2

66

——

1414

15.615.6

——

——

——


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' EKBG0.5-20R1KBG0.5-20R2KBG0.5-30R1KBG0.5-30R2KBG0.5-40R1

2010301540

m0.5

2020303040

12121

2°36'5°13'2°36'5°13'2°36'

RRRRR

HATHATHATHATHAT

44445

99

121215

10.0110.0415.0215.0620.02

—————

1111161621

55555

KBG0.5-50R1KBG0.5-60R1

5060

5060

11

2°36'2°36'

RR

HATHAT

55

2025

25.0330.03

——

2631

55



a For W2-shaped products, a set screw is included. When setting up the mating wheel, make sure no friction occurs within the set screw.


a Worm Wheels are profile shifted to create the proper center distance.b For products with a tapped hole, a set screw is included.c The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.d If bore size is less than ø4, the diameter tolerance is H8. If bore size is ø5 or ø6, and the hole length exceeds 3 times the diameter, the tolerance is also H8.


Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

541

J

GE F

A B C D’

HA


b Gear tooth hardening of the worm reduces the precision (introduces errors in the lead and pressure angles). Avoid heat hardening as it will create bad tooth contact causing abrasion of the wheel.


Hub width Total length Mounting distance Set screw Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G J Size L 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm


Steel Worms

KSW

Bronze Worm Wheels

77777

1212121212

10.510.5131315.5

M3M3M3M3M4

3.53.53.53.53.5

0.27 0.28 0.58 0.59 0.99

0.23 0.23 0.50 0.49 0.85

0.19 0.18 0.41 0.39 0.71

0.15 0.15 0.34 0.32 0.60

0.14 0.13 0.30 0.29 0.54

0.13 0.12 0.28 0.26 0.50

0~0.160~0.160~0.160~0.160~0.16

0.0061 0.0061 0.014 0.014 0.023

KBG0.5-20R1KBG0.5-20R2KBG0.5-30R1KBG0.5-30R2KBG0.5-40R1

77

1212

1820.5

M4M4

3.53.5

1.50 2.10

1.28 1.80

1.08 1.52

0.92 1.31

0.83 1.19

0.77 1.09

0~0.160~0.16

0.039 0.059

KBG0.5-50R1KBG0.5-60R1

Hub width Total length Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm


99999

1818181818

1515191923

1.05 1.06 2.23 2.24 3.81

0.880.861.891.873.24

0.71 0.66 1.53 1.46 2.67

0.58 0.54 1.29 1.20 2.26

0.52 0.48 1.15 1.07 2.02

0.48 0.44 1.06 0.98 1.87

0.04~0.220.04~0.220.04~0.220.04~0.220.04~0.22

0.0230.0230.0550.0550.087

KBG0.8-20R1KBG0.8-20R2KBG0.8-30R1KBG0.8-30R2KBG0.8-40R1

99

1818

2731

5.76 8.06

4.906.88

4.07 5.73

3.47 4.90

3.13 4.46

2.90 4.12

0.04~0.220.04~0.22

0.130.18

KBG0.8-50R1KBG0.8-60R1


(kg)Catalog No.

R Size S1818

M3M3

33

0.010 0.010

KSW0.5-R1KSW0.5-R2

3030

M4M4

55

0.0290.029

KSW0.8-R1KSW0.8-R2

KBG

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

542

a Worm Wheels are profile shifted to create the proper center distance.b H2 Shape Worm Gears have elongated casting holes in the web (H).c The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.d If bore size is less than ø4, the diameter tolerance is H8. If bore size is ø5 or ø6, and the hole length exceeds 3 times the diameter, the tolerance is also H8.

Steel WormsModule 1, 1.25KSW

RS

N OL

W2

Bronze Worm Wheels & Gray Iron Worm WheelsModule 1, 1.25KBG • KCG


Number of starts


LH7 M N O P Q Q'KSW1-R1KSW1-R2 m1 1

23°35'7°11'

RR

W2W2

66

——

1616

1818

——

——

——

KSW1.25-R1KSW1.25-R2 m1.25 1

23°25'6°50'

RR

W2W2

88

——

2121

23.523.5

——

——

——


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' E

KBG1-20R1KBG1-20R2KBG1-30R1KBG1-30R2KBG1-40R1KBG1-50R1

201030154050

m1

202030304050

121211

3°35'7°11'3°35'7°11'3°35'3°35'

RRRRRR

H1H1H1H1H1H1

666688

161620202630

20.0520.1630.0730.2440.0850.1

222232324252

232333334353

101010101010

KBG1.25-20R1KBG1.25-20R2KBG1.25-30R1KBG1.25-30R2KBG1.25-40R1KBG1.25-50R1

201030154050

m1.25

202030304050

121211

3°25'6°50'3°25'6°50'3°25'3°25'

RRRRRR

H1H1H1H1H1H1

666688

202025253040

25.0425.1837.5737.7750.0962.61

27.527.5404052.565

28.7528.7541.2541.2553.7566.25

111111111111


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' E

KCG1-60R1KCG1-80R1KCG1-100R1KCG1-120R1

6080

100120

m1

6080

100120

1111

3°35'3°35'3°35'3°35'

RRRR

HBHBH2H2

10101010

30354040

60.1280.16

100.2120.24

6282

102122

6383

103123

10101010


b These worms produce axial thrust forces. See page 512 for more details.c If bore size is less than ø4, the diameter tolerance is H8. If bore size is ø5 or ø6, and the hole length exceeds 3 times the diameter, the tolerance is also H8.


GE F

J

A B D’DC

H1

Specifications

Catalog No. KBG KCG

Precision grade KHK W 002 grade 4 KHK W 002 grade 4

Referencesection of gear Normal plane Normal plane

Gear teeth Standard full depth Standard full depth

Normalpressure angle 20° 20°

Material CAC502(formerly JIS PBC2) FC200

Heat treatment — —

Tooth hardness — —

KBG KCG

Specifications





Material S45C

Heat treatment —


Sp

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ical

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543


(kg)Catalog No.

R Size S3232

M4M4

55

0.0430.043

KSW1-R1KSW1-R2

3737

M5M5

55

0.0850.085

KSW1.25-R1KSW1.25-R2

* CS has a sand mold casting finish.





(mm)

Weight

(kg)Catalog No.

F G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm


Steel Worms

KSW

Bronze Worm Wheels & Gray Iron Worm Wheels


(mm)

Weight

(kg)Catalog No.



101010101010

202020202020

181823232833

1.89 1.90 4.00 4.03 6.85

10.3

1.58 1.54 3.38 3.35 5.79 8.76

1.26 1.18 2.74 2.62 4.76 7.27

1.04 0.97 2.29 2.14 4.03 6.18

0.92 0.85 2.05 1.91 3.61 5.58

0.85 0.78 1.87 1.74 3.31 5.14

0.06~0.240.06~0.240.06~0.240.06~0.240.06~0.240.06~0.24

0.0430.0430.0890.0890.150.23

KBG1-20R1KBG1-20R2KBG1-30R1KBG1-30R2KBG1-40R1KBG1-50R1

999999

202020202020

232329.2529.2535.541.75

3.19 3.19 6.75 6.77

11.5 17.4

2.65 2.58 5.67 5.60 9.71

14.7

2.10 1.96 4.56 4.33 7.92

12.1

1.72 1.60 3.81 3.54 6.70

10.3

1.53 1.40 3.40 3.16 5.98 9.25

1.40 1.27 3.09 2.85 5.47 8.49

0.08~0.260.08~0.260.08~0.260.08~0.260.08~0.260.08~0.26

0.0700.0700.150.150.240.40


10101010

20202020

(6)(6)(6)(6)

(51)(70)(91)

(111)

38485868

8.6914.721.930.5

7.3912.619.026.7

6.1410.516.022.5

5.249.11

13.919.6

4.788.30

12.718.0

4.397.72

11.916.7

0.06~0.240.06~0.240.06~0.240.06~0.24

0.210.350.470.63

KCG1-60R1KCG1-80R1KCG1-100R1KCG1-120R1

（H

( I )

J

A B C D D

GE F

CS

CS

’

）

H2

A B C D D’

( I )

J

GE F

(H)

CS

CS

HB

KBG • KCG


Sp

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544

Steel WormsModule 1.5KSW

R

P Q

L M N O

W1

Bronze Worm Wheels & Gray Iron Worm WheelsModule 1.5KBG • KCG


Normal module

Number of starts


LH7 M N O P Q Q' KSW1.5-R1

•KSW1.5-R1J8

•KSW1.5-R1J10m1.5

1 3°26' RW1W1TW1K

88

1020 25 28 30 10 —

KSW1.5-R2

•KSW1.5-R2J8

•KSW1.5-R2J102 6°54' R

W1W1TW1K

88

1020 25 28 30 10 —


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' E


201030154050

m1.5

202030304050

121211

3°26'6°54'3°26'6°54'3°26'3°26'

RRRRRR

H1H1H1H1H1H1

88

10101212

222230303040

30.0530.2245.0845.3360.1175.13

333348486378

34.534.549.549.564.579.5

121212121214


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' E

KCG1.5-30R1KCG1.5-40R1KCG1.5-50R1KCG1.5-60R1KCG1.5-80R1KCG1.5-100R1

3040506080

100

m1.5

3040506080

100

111111

3°26'3°26'3°26'3°26'3°26'3°26'

RRRRRR

H1H1HBHBH2H2

101212121515

303040405050

45.0860.1175.1390.16

120.22150.27

48637893

123153

49.564.579.594.5

124.5154.5

121214141414


[Caution on Product Characteristics] a Worm Wheels are profile shifted to create the proper center distance.b H2 Shape Worm Gears have elongated casting holes in the web (H).c The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

GE F

J

A B D’DC

H1

Specifications

Catalog No. KBG KCG




Normalpressure angle 20° 20°

Material CAC502 (formerly JIS PBC2) FC200



KBG KCG

Specifications





Material S45C

Heat treatment —



[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. b Gear tooth hardening of the worm reduces the precision (introduces errors in the lead and pressure angles). Avoid heat hardening as it will create bad tooth contact

causing abrasion of the wheel.

Sp

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545


(kg)Catalog No.


40——

4 x 1.8

—M5M4

—55

0.120.120.11

KSW1.5-R1

•KSW1.5-R1J8

•KSW1.5-R1J10

40——

4 x 1.8

—M5M4

—55

0.120.120.11

KSW1.5-R2

•KSW1.5-R2J8

•KSW1.5-R2J10



Series



Steel Worms

KSW

R

P Q

L M N O

S

W1T

R

P Q

L M N O

S

W1K


（H

( I )

J

A B C D D

GE F

CS

CS

’

）

H2

A B C D D’

( I )

J

GE F

(H)

CS

CS

HB

101010101010

222222222224

27.527.5353542.550

4.76 4.75

10.1 10.1 17.2 30.4

3.96 3.85 8.47 8.37

14.5 25.6

3.10 2.89 6.72 6.40

11.7 20.8

2.56 2.38 5.67 5.26 9.96

17.8

2.27 2.08 5.03 4.67 8.86

16.0

2.06 1.87 4.55 4.20 8.04

14.6

0.08~0.260.08~0.260.08~0.260.08~0.260.08~0.260.08~0.26

0.100.100.220.220.350.65


101010101010

222224242424

——(6)(4)(9)(7)

——

(62)(79)

(112)(138)

3542.55057.572.587.5

6.0410.318.225.543.164.4

5.088.71

15.421.636.855.6

4.037.01

12.517.630.145.8

3.405.98

10.715.126.340.1

3.025.319.59

13.723.836.4

2.734.838.74

12.421.933.6

0.08~0.260.08~0.260.08~0.260.08~0.260.08~0.260.08~0.26

0.180.280.430.470.941.21

KCG1.5-30R1KCG1.5-40R1KCG1.5-50R1KCG1.5-60R1KCG1.5-80R1KCG1.5-100R1

[Caution on J series] a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.

b Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d Areas of products which have been re-worked will not be black oxide coated.e For products having a tapped hole, a set screw is included.


(mm)

Weight

(kg)Catalog No.



(mm)

Weight

(kg)Catalog No.


KBG • KCG

Sp

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Bev

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rod

ucts

546

Steel WormsModule 2KSW

R

P Q

L M N O

W1

Bronze Worm Wheels & Gray Iron Worm WheelsModule 2KBG • KCG


Normal module

Number of starts


LH7 M N O P Q Q' KSW2-R1

•KSW2-R1J12

•KSW2-R1J14

m2

1 3°42' RW1W1KW1K

121214

25 31 35 32 14 —

KSW2-R2

•KSW2-R2J12

•KSW2-R2J142 7°25' R

W1W1KW1K

121214

25 31 35 32 14 —

KSW2-L1

•KSW2-L1J12

•KSW2-L1J141 3°42' L

W1W1KW1K

121214

25 31 35 32 14 —

KSW2-L2

•KSW2-L2J12

•KSW2-L2J142 7°25' L

W1W1KW1K

121214

25 31 35 32 14 —


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' EKBG2-20R1KBG2-20R2

2010

m2

2020

12

3°42'7°25'

RR

H1H1

1212

3333

40.0840.34

4444

4646

2222

KBG2-20L1KBG2-20L2

2010

2020

12

3°42'7°25'

LL

H1H1

1212

3333

40.0840.34

4444

4646

2222


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' EKCG2-20R1KCG2-20R2KCG2-30R1KCG2-30R2KCG2-40R1

2010301540

m2

2020303040

12121

3°42'7°25'3°42'7°25'3°42'

RRRRR

H1H1H1H1H1

1212121212

3333404045

40.0840.3460.1360.5180.17

4444646484

4646666686

2222222222

KCG2-50R1KCG2-50R2KCG2-60R1

502560

505060

121

3°42'7°25'3°42'

RRR

HBHBHB

121212

484860

100.21100.84120.25

104104124

106106126

222222

KCG2-20L1KCG2-20L2KCG2-30L1KCG2-30L2KCG2-40L1

2010301540

2020303040

12121

3°42'7°25'3°42'7°25'3°42'

LLLLL

H1H1H1H1H1

1212121212

3333404045

40.0840.3460.1360.5180.17

4444646484

4646666686

2222222222

KCG2-50L1KCG2-50L2KCG2-60L1

502560

505060

121

3°42'7°25'3°42'

LLL

HBHBHB

121212

484860

100.21100.84120.25

104104124

106106126

222222

[Caution on Product Characteristics] a Worm Wheels are profile shifted to create the proper center distance.b The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

GE F

J

A B D’DC

H1

KBG KCG

Specifications

Catalog No. KBG KCG




Normalpressure angle 14° 30' 14° 30'




Specifications





Material S45C

Heat treatment —



[Caution on Product Characteristics][Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns.



Sp

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ears

Hel

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547



Series Steel Worms

KSW

R

P Q

L M N O

S

W1K


(kg)Catalog No.


46—

4 x 1.85 x 2.3

—M4M4

—77

0.200.200.18

KSW2-R1

•KSW2-R1J12

•KSW2-R1J14

46—

4 x 1.85 x 2.3

—M4M4

—77

0.200.200.18

KSW2-R2

•KSW2-R2J12

•KSW2-R2J14

46—

4 x 1.85 x 2.3

—M4M4

—77

0.200.200.18

KSW2-L1

•KSW2-L1J12

•KSW2-L1J14

46—

4 x 1.85 x 2.3

—M4M4

—77

0.200.200.18

KSW2-L2

•KSW2-L2J12

•KSW2-L2J14

[Caution on J series]


A B C D D’

( I )

J

GE F

(H)

CS

CS

HB


(mm)

Weight

(kg)Catalog No.




1313

3535

35.535.5

12.3 12.3

10.2 10.0

8.00 7.51

6.59 6.15

5.78 5.32

5.25 4.80

0.10~0.280.10~0.28

0.330.33

KBG2-20R1KBG2-20R2

1313

3535

35.535.5

12.3 12.3

10.2 10.0

8.00 7.51

6.59 6.15

5.78 5.32

5.25 4.80

0.10~0.280.10~0.28

0.330.33

KBG2-20L1KBG2-20L2

1313131313

3535353535

—————

—————

35.535.545.545.555.5

7.387.40

15.615.726.7

6.156.00

13.113.122.5

4.804.51

10.49.96

18.1

3.953.698.748.15

15.4

3.473.197.707.18

13.55

3.152.886.966.45

12.3

0.10~0.280.10~0.280.10~0.280.10~0.280.10~0.28

0.27 0.270.570.570.96

KCG2-20R1KCG2-20R2KCG2-30R1KCG2-30R2KCG2-40R1

131313

353535

(7)(7)(7)

(88)(88)

(108)

65.565.575.5

40.340.756.4

34.134.047.9

27.626.938.9

23.622.433.3

21.019.629.9

19.117.827.2

0.10~0.280.10~0.280.10~0.28

1.011.011.44


1313131313

3535353535

—————

—————

35.535.545.545.555.5

7.387.40

15.615.726.7

6.156.00

13.113.122.5

4.804.51

10.49.96

18.1

3.953.698.748.15

15.4

3.473.197.707.18

13.55

3.152.886.966.45

12.3

0.10~0.280.10~0.280.10~0.280.10~0.280.10~0.28

0.270.270.570.570.96


131313

353535

(7)(7)(7)

(88)(88)

(108)

65.565.575.5

40.340.756.4

34.134.047.9

27.626.938.9

23.622.433.3

21.019.629.9

19.117.827.2

0.10~0.280.10~0.280.10~0.28

1.011.011.44


a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.

b Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.

c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d Areas of products which have been re-worked will not be black oxide coated.e For products having a tapped hole, a set screw is included.


(mm)

Weight

(kg)Catalog No.


KBG • KCG

Sp

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ears

Hel

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Gea

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Gea

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Gea

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Bev

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oxes

Oth

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rod

ucts

548

Steel WormsModule 2.5KSW

R

P Q

L M N O

W1

Bronze Worm Wheels & Gray Iron Worm WheelsModule 2.5KBG • KCG


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' EKBG2.5-20R1KBG2.5-20R2

2010

m2.5

2020

12

3°52'7°46'

RR

H1H1

1212

3535

50.1150.46

5555

57.557.5

2222

KBG2.5-20L1KBG2.5-20L2

2010

2020

12

3°52'7°46'

LL

H1H1

1212

3535

50.1150.46

5555

57.557.5

2222


ratioNormal module

No. of teeth

Number of starts


AH7 B C D D' EKCG2.5-20R1KCG2.5-20R2KCG2.5-30R1KCG2.5-30R2KCG2.5-40R1

2010301540

m2.5

2020303040

12121

3°52'7°46'3°52'7°46'3°52'

RRRRR

H1H1HBHBHB

1212121215

3535404045

50.1150.4675.1775.68

100.23

55558080

105

57.557.582.582.5

107.5

2222222222

KCG2.5-50R1KCG2.5-50R2KCG2.5-60R1

502560

505060

121

3°52'7°46'3°52'

RRR

HBHBHB

151515

505055

125.29126.16150.34

130130155

132.5132.5157.5

222222

KCG2.5-20L1KCG2.5-20L2KCG2.5-30L1KCG2.5-30L2KCG2.5-40L1

2010301540

2020303040

12121

3°52'7°46'3°52'7°46'3°52'

LLLLL

H1H1HBHBHB

1212121215

3535404045

50.1150.4675.1775.68

100.23

55558080

105

57.557.582.582.5

107.5

2222222222

KCG2.5-50L1KCG2.5-50L2KCG2.5-60L1

502560

505060

121

3°52'7°46'3°52'

LLL

HBHBHB

151515

505055

125.29126.16150.34

130130155

132.5132.5157.5

222222

KBG KCG


Specifications

Catalog No. KBG KCG

Precision grade KHK W 002 grade 4 KHK W 002 grade 4Referencesection of gear Normal plane Normal plane

Gear teeth Standard full depth Standard full depthNormalpressure angle 20° 20°





Normal module

Number of starts


LH7 M N O P Q Q' KSW2.5-R1•KSW2.5-R1J15•KSW2.5-R1J16•KSW2.5-R1J17

m2.5

1 3°52' RW1W1KW1KW1K

15151617

30 37 42 45 18 —

KSW2.5-R2•KSW2.5-R2J15•KSW2.5-R2J16•KSW2.5-R2J172 7°46' R

W1W1KW1KW1K

15151617

30 37 42 45 18 —

KSW2.5-L1•KSW2.5-L1J15•KSW2.5-L1J16•KSW2.5-L1J171 3°52' L

W1W1KW1KW1K

15151617

30 37 42 45 18 —

KSW2.5-L2•KSW2.5-L2J15•KSW2.5-L2J16•KSW2.5-L2J172 7°46' L

W1W1KW1KW1K

15151617

30 37 42 45 18 —

Specifications

Precision grade KHK W 001 grade 4 * Referencesection of gear Normal plane

Gear teeth Standard full depthNormalpressure angle 20°

Material S45C

Heat treatment —



[Caution on Product Characteristics][Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns.



Sp

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ears

Hel

ical

Gea

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alG

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Rac

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P R

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& P

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Gea

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Gea

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crew

Gea

rsW

orm

Gea

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air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

549

Series Steel Worms

KSW

R

P Q

L M N O

S

W1K




(kg)Catalog No.


63—

5 x 2.35 x 2.35 x 2.3

—M4M4M4

—999

0.390.390.370.36

KSW2.5-R1•KSW2.5-R1J15•KSW2.5-R1J16•KSW2.5-R1J17

63—

5 x 2.35 x 2.35 x 2.3

—M4M4M4

—999

0.390.390.370.36

KSW2.5-R2•KSW2.5-R2J15•KSW2.5-R2J16•KSW2.5-R2J17

63—

5 x 2.35 x 2.35 x 2.3

—M4M4M4

—999

0.390.390.370.36

KSW2.5-L1•KSW2.5-L1J15•KSW2.5-L1J16•KSW2.5-L1J17

63—

5 x 2.35 x 2.35 x 2.3

—M4M4M4

—999

0.390.390.370.36

KSW2.5-L2•KSW2.5-L2J15•KSW2.5-L2J16•KSW2.5-L2J17



A B C D D’

( I )

J

GE F

(H)

CS

CS

HB


(mm)

Weight

(kg)Catalog No.




(mm)

Weight

(kg)Catalog No.



1414141414

3636363636

——

(10)(10)

(9)

——

(60)(60)(86)

43.543.5565668.5

12.912.927.327.546.7

10.610.422.822.539.0

8.307.78

18.017.231.3

6.836.36

15.114.126.5

5.975.49

13.212.323.3

5.444.96

12.011.121.2

0.13~0.310.13~0.310.13~0.310.13~0.310.13~0.31

0.400.400.700.701.02

KCG2.5-20R1KCG2.5-20R2KCG2.5-30R1KCG2.5-30R2KCG2.5-40R1

141414

363636

(9)(9)(9)

(110)(110)(136)

818193.5

70.671.198.8

59.058.682.9

47.846.467.3

40.738.657.6

36.133.651.5

33.030.747.0

0.13~0.310.13~0.310.13~0.31

1.461.461.93

KCG2.5-50R1KCG2.5-50R2KCG2.5-60R1

1414141414

3636363636

——

(10)(10)

(9)

——

(60)(60)(86)

43.543.5565668.5

12.912.927.327.546.7

10.610.422.822.539.0

8.307.78

18.017.231.3

6.836.36

15.114.126.5

5.975.49

13.212.323.3

5.444.96

12.011.121.2

0.13~0.310.13~0.310.13~0.310.13~0.310.13~0.31

0.400.400.700.701.02

KCG2.5-20L1KCG2.5-20L2KCG2.5-30L1KCG2.5-30L2KCG2.5-40L1

141414

363636

(9)(9)(9)

(110)(110)(136)

818193.5

70.671.198.8

59.058.682.9

47.846.467.3

40.738.657.6

36.133.651.5

33.030.747.0

0.13~0.310.13~0.310.13~0.31

1.461.461.93

KCG2.5-50L1KCG2.5-50L2KCG2.5-60L1

1414

3636

43.543.5

21.5 21.5

17.7 17.3

13.8 13.0

11.4 10.6

9.94 9.14

9.07 8.27

0.13~0.310.13~0.31

0.490.49

KBG2.5-20R1KBG2.5-20R2

1414

3636

43.543.5

21.5 21.5

17.7 17.3

13.8 13.0

11.4 10.6

9.94 9.14

9.07 8.27

0.13~0.310.13~0.31

0.490.49

KBG2.5-20L1KBG2.5-20L2

GE F

J

A B D’DC

H1



c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d Areas of products which have been re-worked will not be black oxide coated.e For products having a tapped hole, a set screw is included.

KBG • KCG

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

550


R

P Q

L M N O

W1



ratioNormal module

No. of teeth

Number of starts



2010

m3

2020

12

3°55'7°50'

RR

H1H1

2020

5050

60.1460.57

6666

6969

2828

KBG3-20L1KBG3-20L2

2010

2020

12

3°55'7°50'

LL

H1H1

2020

5050

60.1460.57

6666

6969

2828


ratioNormal module

No. of teeth

Number of starts



2010301540

m3

2020303040

12121

3°55'7°50'3°55'7°50'3°55'

RRRRR

H1H1H1H1HB

2020202020

5050555555

60.1460.5790.2190.85

120.28

66669696

126

69699999

129

2828282830


502560

505060

121

3°55'7°50'3°55'

RRR

HBHBHB

202020

636370

150.35151.41180.42

156156186

159159189

303030


2010301540

2020303040

12121

3°55'7°50'3°55'7°50'3°55'

LLLLL

H1H1H1H1HB

2020202020

5050555555

60.1460.5790.2190.85

120.28

66669696

126

69699999

129

2828282830


502560

505060

121

3°55'7°50'3°55'

LLL

HBHBHB

202020

636370

150.35151.41180.42

156156186

159159189

303030


KBG KCG


Specifications

Catalog No. KBG KCG

Precision grade KHK W 002 grade 4 KHK W 002 grade 4Referencesection of gear Normal plane Normal plane

Gear teeth Standard full depth Standard full depthNormalpressure angle 14° 30' 14° 30'





Normal module

Number of starts


LH7 M N O P Q Q' KSW3-R1•KSW3-R1J17•KSW3-R1J18•KSW3-R1J19•KSW3-R1J20

m3

1 3°55' R

W1W1KW1KW1KW1K

1617181920

35 44 50 50 20 —

KSW3-R2•KSW3-R2J17•KSW3-R2J18•KSW3-R2J19•KSW3-R2J20

2 7°50' R

W1W1KW1KW1KW1K

1617181920

35 44 50 50 20 —

KSW3-L1•KSW3-L1J17•KSW3-L1J18•KSW3-L1J19•KSW3-L1J20

1 3°55' L

W1W1KW1KW1KW1K

1617181920

35 44 50 50 20 —


2 7°50' L

W1W1KW1KW1KW1K

1617181920

35 44 50 50 20 —

Specifications

Precision grade KHK W 001 grade 4 * Referencesection of gear Normal plane

Gear teeth Standard full depthNormalpressure angle 14° 30'

Material S45C

Heat treatment —



Newly addedNewly addedSeries Steel WormsR

P Q

L M N O

S

W1K




(kg)Catalog No.


70

—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.640.620.600.580.56


70

—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.640.620.600.580.56


70

—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.640.620.600.580.56


70

—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.640.620.600.580.56




KBG • KCG

A B C D D’

( I )

J

GE F

(H)

CS

CS

HB


(mm)

Weight

(kg)Catalog No.



1515151515

4343434345

————(9)

————

(107)

5252676782

22.122.246.647.279.8

18.117.738.738.566.3

14.113.330.629.353.2

11.510.725.423.744.6

10.09.24

22.220.839.1

0.15~0.330.15~0.330.15~0.330.15~0.330.15~0.33

0.730.731.501.501.79


151515

454545

(9)(9)(9)

(138)(138)(166)

9797

112

121122169

100100141

81.179.1

114

68.465.196.7

60.556.786.3

0.15~0.330.15~0.330.15~0.33

2.502.503.40


1515151515

4343434345

————(9)

————

(107)

5252676782

22.122.246.647.279.8

18.117.738.738.566.3

14.113.330.629.353.2

11.510.725.423.744.6

10.09.24

22.220.839.1

0.15~0.330.15~0.330.15~0.330.15~0.330.15~0.33

0.730.731.501.501.79


151515

454545

(9)(9)(9)

(138)(138)(166)

9797

112

121122169

100100141

81.179.1

114

68.465.196.7

60.556.786.3

0.15~0.330.15~0.330.15~0.33

2.502.503.40


1515

4343

5252

36.8 37.0

30.1 29.5

23.5 22.1

19.1 17.9

16.7 15.4

15.2 14.0

0.15~0.330.15~0.33

0.890.89

KBG3-20R1KBG3-20R2

1515

4343

5252

36.8 37.0

30.1 29.5

23.5 22.1

19.1 17.9

16.7 15.4

15.2 14.0

0.15~0.330.15~0.33

0.890.89

KBG3-20L1KBG3-20L2

[Caution on Secondary Operations]a Please read “Caution on Performing Secondary Operations” (Page 512) when per-

forming modifications and/or secondary operations for safety concerns. b Gear tooth hardening of the worm reduces the precision (introduces errors in the lead

and pressure angles). Avoid heat hardening as it will create bad tooth contact causing abrasion of the wheel.


GE F

J

A B D’DC

H1

a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.b Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d Areas of products which have been re-worked will not be black oxide coated.e For products having a tapped hole, a set screw is included.


(mm)

Weight

(kg)Catalog No.

F G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm

KSW

551

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

552


R

P Q

L M N O

W1



Number of starts



23°42'7°25'

RR

W1W1

2222

5050

6262

7070

7070

2525

——

KSW4-L1KSW4-L2 m4 1

23°42'7°25'

LL

W1W1

2222

5050

6262

7070

7070

2525

——


ratioNormal module

No. of teeth

Number of starts



2010

m4

2020

12

3°42'7°25'

RR

H1H1

2020

6060

80.1780.67

8888

9090

3535

KBG4-20L1KBG4-20L2

2010

2020

12

3°42'7°25'

LL

H1H1

2020

6060

80.1780.67

8888

9090

3535


ratioNormal module

No. of teeth

Number of starts



2010301540

m4

2020303040

12121

3°42'7°25'3°42'7°25'3°42'

RRRRR

H1H1HBHBHB

2020202020

6060606070

80.1780.67

120.25121.01160.33

8888

128128168

9090

130130171

3535353535


502560

505060

121

3°42'7°25'3°42'

RRR

H2H2H2

202020

707080

200.42201.69240.5

208208248

211211251

353535


2010301540

2020303040

12121

3°42'7°25'3°42'7°25'3°42'

LLLLL

H1H1HBHBHB

2020202020

6060606070

80.1780.67

120.25120.01160.33

8888

128128168

9090

130130171

3535353535


502560

505060

121

3°42'7°25'3°42'

LLL

H2H2H2

202020

707080

200.42201.69240.5

208208248

211211251

353535

BG CG

Specifications





Material S45C

Heat treatment —




Specifications

Catalog No. BG CG








GE F

J

A B D’DC

H1

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

553


(kg)Catalog No.

R Size S9595

——

——

1.761.76

KSW4-R1KSW4-R2

9595

——

——

1.761.76

KSW4-L1KSW4-L2



Steel Worms

KSW


（H

( I )

J

A B C D D

GE F

CS

CS

’

）

A B C D D’

( I )

J

GE F

(H)

CS

CS



H2HB


(mm)

Weight

(kg)Catalog No.

F G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm


(mm)

Weight

(kg)Catalog No.



1717171717

5252525252

——

(12)(12)(11)

——

(96)(96)

(136)

71719191

111

45.645.596.396.8

165

37.036.079.178.3

136

28.726.962.359.4

108

23.021.450.947.389.4

0.17~0.370.17~0.370.17~0.370.17~0.370.17~0.37

1.561.562.522.523.81


171717

525252

(12)(12)(12)

(176)(176)(218)

131131151

249250348

205204288

165160233

137130194

0.17~0.370.17~0.370.17~0.37

4.784.786.36


1717171717

5252525252

——

(12)(12)(11)

——

(96)(96)

(136)

71719191

111

45.645.596.396.8

165

37.036.079.178.3

136

28.726.962.359.4

108

23.021.450.947.389.4

0.17~0.370.17~0.370.17~0.370.17~0.370.17~0.37

1.561.562.522.523.81


171717

525252

(12)(12)(12)

(176)(176)(218)

131131151

249250348

205204288

165160233

137130194

0.17~0.370.17~0.370.17~0.37

4.784.786.36


1717

5252

7171

75.9 75.9

61.7 60.0

47.9 44.8

38.4 35.7

33.7 30.9

30.1 27.5

0.17~0.370.17~0.37

1.911.91

KBG4-20R1KBG4-20R2

1717

5252

7171

75.9 75.9

61.7 60.0

47.9 44.8

38.4 35.7

33.7 30.9

30.1 27.5

0.17~0.370.17~0.37

1.911.91

KBG4-20L1KBG4-20L2


KBG • KCG


Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

554

Steel WormsModule 5, 6KSW

R

P QQ’

L M N O

W3

Bronze Worm Wheels & Gray Iron Worm WheelsModule 5, 6KBG • KCG


Number of starts



24°06'8°13'

RR

W3W3

2525

5656

7070

8080

8585

2020

2020

KSW6-R1KSW6-R2 m6 1

24°18'8°38'

RR

W3W3

3030

6464

8080

9292

100100

2525

2525


ratioNormal module

No. of teeth

Number of starts



2010 m5 20

2012

4°06'8°13'

RR

H1H1

2222

7575

100.26101.04

110110

113113

4545

KBG6-20R1KBG6-20R2

2010 m6 20

2012

4°18'8°38'

RR

H1H1

2525

100100

120.34121.38

132132

136136

5252


ratioNormal module

No. of teeth

Number of starts



2010301540 m5

2020303040

12121

4°06'8°13'4°06'8°13'4°06'

RRRRR

H1H1HBHBH2

2222222222

7575757590

100.26101.04150.38151.56200.51

110110160160210

113113163163213

4545454545


502560

505060

121

4°06'8°13'4°06'

RRR

H2H2H2

222222

9090

100

250.61252.59300.77

260260310

263263313

454545


2010301540 m6

2020303040

12121

4°18'8°38'4°18'8°38'4°18'

RRRRR

H1H1HBHBH2

2525252525

100100100100100

120.34121.38180.51182.06240.68

132132192192252

136136196196256

5252525252


502560

505060

121

4°18'8°38'4°18'

RRR

H2H2H2

252525

100100120

300.85303.44361.02

312312372

316316376

525252

KBG KCG

Specifications

Catalog No. KBG KCG







Tooth ardness — —



GE F

J

A B D’DC

H1

Specifications





Material S45C

Heat treatment —


Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

555

Steel Worms


(kg)Catalog No.

R Size S125125

——

——

2.862.86

KSW5-R1KSW5-R2

150150

——

——

4.384.38

KSW6-R1KSW6-R2

KSW




（H

( I )

J

A B C D D

GE F

CS

CS

’

）

A B C D D’

( I )

J

GE F

(H)

CS

CS

KBG • KCG

H2HB


(mm)

Weight

(kg)Catalog No.

F G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm


(mm)

Weight

(kg)Catalog No.



2020202020

6565656565

——

(13)(13)(16)

——

(127)(127)(172)

8585

110110135

87.487.9

185187316

70.368.9

150150258

54.751.5

119114206

43.841.096.890.6

170

0.20~0.400.20~0.400.20~0.400.20~0.400.20~0.40

3.183.184.784.787.44


202020

656565

(16)(16)(13)

(223)(223)(276)

160160185

477483668

390390548

315307443

261249369

0.20~0.400.20~0.400.20~0.40

9.799.79

12.0


2020202020

7272727272

——

(15)(15)(15)

——

(155)(155)(213)

100100130130160

139141294299502

111110237238407

86.281.8

187181325

—————

0.22~0.420.22~0.420.22~0.420.22~0.420.22~0.42

5.395.398.288.28

10.9


202020

727272

(16)(16)(17)

(275)(275)(336)

190190220

760774

1060

615620865

496488698

———

0.22~0.420.22~0.420.22~0.42

14.014.019.8


2020

6565

8585

146 146

117 115

91.2 85.8

73.0 68.4

63.7 58.8

56.9 52.2

0.20~0.400.20~0.40

3.893.89

KBG5-20R1KBG5-20R2

2020

7272

100100

232 235

185 183

144 136

115 109

99.2 92.3

88.882.0

0.22~0.420.22~0.42

6.606.60

KBG6-20R1KBG6-20R2





Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

556

Stainless Steel WormsModule 0.5, 0.8KSUW

Plastic Worm WheelsModule 0.5, 0.8KDG

Specifications





Material Polyacetal

Heat treatment —

Tooth hardness —

RS

N OL

W2


Number of starts

Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length

LH8 M N O P Q R

KSUW0.5-R1KSUW0.5-R2

m0.5 12

2°36'5°13'

RR

W2W2

55

——

1111

1212

——

——

1818


m0.8 12

3°17'6°34'

RR

W2W2

66

——

1414

15.615.6

——

——

3030

JG

E F

A B C D’

HA


ratioNormal module

No. of teeth

Number of starts


A B C D D' E

KDG0.5-20R1KDG0.5-20R2KDG0.5-30R1KDG0.5-30R2KDG0.5-40R1

2010301540

m0.5

2020303040

12121

2°36'5°13'2°36'5°13'2°36'

RRRRR

HAHAHAHAHA

44445

99

121215

10.01 10.04 15.02 15.06 20.02

—————

1111161621

55555

KDG0.5-50R1KDG0.5-60R1

5060

5060

11

2°36'2°36'

RR

HAHA

55

2025

25.03 30.03

——

2631

55


2010301540

m0.8

2020303040

12121

3°17'6°34'3°17'6°34'3°17'

RRRRR

HAHAHAHAHA

55556

1212181820

16.03 16.11 24.04 24.16 32.05

—————

17.617.625.625.633.6

99999

KDG0.8-50R1KDG0.8-60R1

5060

5060

11

3°17'3°17'

RR

HAHA

88

2525

40.0748.08

——

41.649.6

99

- 0.05- 0.10



[Caution on Product Characteristics] a Worm Wheels are profile shifted to create the proper center distance.b The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see

page 510 for more details.c Since the bore is finished with a minus tolerance, you can use a shaft with a force fit.

Specifications





Material SUS303

Heat treatment —


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557

Set Screw Weight

(kg)Catalog No.

Size S

M3M3

33

0.010 0.010


M4M4

55

0.029 0.029


Hub width Total length Mounting distance Allowable torque (N·m) Allowable torque kgf·m) Backlash

(mm)

Weight

(g)Catalog No.

F G J Bending strength Bending strength

77777

1212121212

10.510.5131315.5

0.067 0.067 0.11 0.11 0.16

0.0068 0.0069 0.011 0.011 0.016

0~0.160~0.160~0.160~0.160~0.16

1.01 1.01 2.21 2.21 3.72


77

1212

1820.5

0.21 0.26

0.022 0.027

0~0.160~0.16

6.36 9.67

KDG0.5-50R1KDG0.5-60R1

99999

1818181818

1515191923

0.31 0.31 0.52 0.52 0.74

0.031 0.032 0.053 0.053 0.076

0.04~0.220.04~0.220.04~0.220.04~0.220.04~0.22

3.73 3.73 8.84 8.84

14.0


99

1818

2731

0.98 1.21

0.10 0.12

0.04~0.220.04~0.22

21.6 28.8

KDG0.8-50R1KDG0.8-60R1

[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (2) when performing modifications and/or secondary operations for safety concerns.


Stainless Steel Worms

KSUW

Plastic Worm Wheels

KDG


Sp

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& P

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Gea

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558

Module 1, 1.5KSUW

Module 1, 1.5KPG


ratioNormal module

No. of teeth

Number of starts


A B C D D' E

KPG1-20R1KPG1-20R2KPG1-30R1KPG1-40R1KPG1-50R1

2010304050

m1

2020304050

12111

3°35'7°11'3°35'3°35'3°35'

RRRRR

H1H1H1H1H1

66688

1616202630

20.0420.1630.0640.0850.1

2222324252

2323334353

1010101010

KPG1.5-20R1KPG1.5-20R2

2010 m1.5 20

2012

3°26'6°54'

RR

H1H1

88

2222

30.0530.22

3333

34.534.5

1212

RS

N OL

W2

GE F

J

A B D’DC

H1


Plastic Worm Wheels


b These worms produce axial thrust forces. See page 512 for more details.c If bore size is less than ø4, the tolerance is H8. If bore size is ø5 or ø6, and the hole length exceeds 3 times the diameter, the

tolerance is also H8.

[Caution on Product Characteristics] a Worm Wheels are profile shifted to create the proper center distance.b Significant variations in temperature or humidity can cause dimensional changes in plastic gears (MC Nylon gears), for bore

size (H8 when produced), teeth diameter, and backlash. c The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see

page 510 for more details.

Specifications





Material MC901 Nylon

Heat treatment —

Tooth hardness —

Specifications





Material SUS303

Heat treatment —



Norma mod-ule

Number of starts


LH7 M N O P Q R

KSUW1-R1 KSUW1-R2 m1 1

23°35'7°11'

RR

W2W2

66

——

1616

1818

——

——

3232

KSUW1.5-R1•KSUW1.5-R1J8•KSUW1.5-R1J10

m1.5

1 3°26' RW1W1TW1K

88

1020 25 28 30 10 40


2 6°54' RW1W1TW1K

88

1020 25 28 30 10 40

* The precision grade of this product is equivalent to the value shown in the table.


* In regards to MC Nylon gears, other materials are available for plastic gears, including Ultra High Molecular Weight Polyethylene (UHMW-PE), which has excellent abrasion resistance. Poly Ether Ether Ketone (PEEK) also has quality properties. A single piece order is acceptable and will be produced as a custom-made gear. For details on quotations and orders please see page VI.

Sp

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Gea

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559


(mm)

Weight

(kg)Catalog No.


1010101010

2020202020

1818232833

0.620.621.031.491.96

0.060 0.060 0.10 0.15 0.20

0~0.280~0.280~0.280~0.280~0.28

0.00580.00580.0120.0210.031

KPG1-20R1KPG1-20R2KPG1-30R1KPG1-40R1KPG1-50R1

1010

2222

27.527.5

1.661.68

0.170.17

0~0.300~0.30

0.0140.014

KPG1.5-20R1KPG1.5-20R2


b Plastic gears are susceptible to the effects of temperature and moisture. Dimensional changes may occur while performing secondary operations and during post-machining operations.



Plastic Worm Wheels

R

P Q

L M N O

W1

KSUW

KPG

R

P Q

L M N O

S

W1T

R

P Q

L M N O

S

W1K

Keyway Set screw Weight

(kg)Catalog No.

• : J Series (Available-on-request)Width×Depth Size S

——

M4M4

55

0.0420.042

KSUW1-R1 KSUW1-R2

——

4 x 1.8

—M5M4

—55

0.120.120.11


——

4 x 1.8

—M5M4

—55

0.120.120.11


Series

a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the day ordered), after placing an order.

Please allow additional shipping time to get to your local distributor.b Number of products we can process for one order is 1 to 20 units. For quantities of

21 or more pieces, we need to quote price and lead time.c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d For products having a tapped hole, a set screw is included.


Sp

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560

Module 2, 2.5, 3KSUW

Specifications

Precision grade KHK W 001 grade 4* Referencesection of gear Normal plane

Gear teeth Standard full depthNormalpressure angle 14° 30'*

Material SUS303

Heat treatment —


Module 2, 2.5, 3KPG

Specifications

Precision grade KHK W 002 grade 5Referencesection of gear Normal plane

Gear teeth Standard full depthNormalpressure angle 14° 30'*

Material MC901 Nylon

Heat treatment —

Tooth hardness —

R

P Q

L M N O

W1


Normal module

Number of starts


LH7 M N O P Q R KSUW2-R1•KSUW2-R1J12•KSUW2-R1J14

m2

1 3°42' RW1W1KW1K

121214

25 31 35 32 14 46

KSUW2-R2•KSUW2-R2J12•KSUW2-R2J14 2 7°25' R

W1W1KW1K

121214

25 31 35 32 14 46

KSUW2.5-R1•KSUW2.5-R1J15•KSUW2.5-R1J16•KSUW2.5-R1J17 m2.5

1 3°52' R

W1W1KW1KW1K

15151617

30 37 42 45 18 63

KSUW2.5-R2•KSUW2.5-R2J15•KSUW2.5-R2J16•KSUW2.5-R2J17

2 7°46' R

W1W1KW1KW1K

15151617

30 37 42 45 18 63

KSUW3-R1•KSUW3-R1J17•KSUW3-R1J18•KSUW3-R1J19•KSUW3-R1J20 m3

1 3°55' R

W1W1KW1KW1KW1K

1617181920

35 44 50 50 20 70

KSUW3-R2•KSUW3-R2J17•KSUW3-R2J18•KSUW3-R2J19•KSUW3-R2J20

2 7°50' R

W1W1KW1KW1KW1K

1617181920

35 44 50 50 20 70


ratioNormal module

No. of teeth

Number of starts


A B C D D' E

KPG2-20R1KPG2-20R2

2010 m2 20

2012

3°42'7°25'

RR

H1H1

1010

3333

40.0840.34

4444

4646

2222

KPG2.5-20R1KPG2.5-20R2

2010 m2.5 20

2012

3°52'7°46'

RR

H1H1

1212

3535

50.1150.46

5555

57.557.5

2222

KPG3-20R1KPG3-20R2

2010 m3 20

2012

3°55'7°50'

RR

H1H1

1515

5050

60.1460.57

6666

6969

2828


Plastic Worm Wheels

[Caution on Product Characteristics] a Worm Wheels are profile shifted to create the proper center distance.b Significant variations in temperature or humidity can cause dimensional changes in plastic gears (MC Nylon gears), for bore size (H8 when

produced), teeth diameter, and backlash. c The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Usage above the value in brack-

ets will exceed the maximum allowable sliding speed, if no lubrication is applied. So, lubrication is required. Please see page 510 for more details.

* The precision grade of J Series products is equivalent to the value shown in the table.* The pressure angle is at 20 degrees for module 2.5.

* The pressure angle is at 20 degrees for module 2.5.

Sp

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561


(mm)

Weight

(kg)Catalog No.


1313

3535

35.535.5

4.784.82

0.490.49

0~0.330~0.33

0.0460.046

KPG2-20R1KPG2-20R2

1414

3636

43.543.5

(8.46)(8.54)

0.860.87

0~0.360~0.36

0.0660.066

KPG2.5-20R1KPG2.5-20R2

1515

4343

5252

(13.7) (13.8)

1.40 1.41

0~0.380~0.38

0.130.13

KPG3-20R1KPG3-20R2

GE F

J

A B D’DC

H1


[Caution on Secondary Operations]a Please read “Caution on Performing Secondary Operations” (Page 512)

when performing modifications and/or secondary operations for safety concerns.

a Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. b Plastic gears are susceptible to the effects of temperature and moisture. Dimensional changes may occur while performing secondary operations and during post-machining operations.

[Caution on Product Characteristics]a These worms produce axial thrust forces. See page 512 for more details.

Series Stainless Steel Worms

KSUW

R

P Q

L M N O

S

W1K

Plastic Worm Wheels

KPG

Keyway Set screw Weight

(kg)Catalog No.

• : J Series (Available-on-request)Width×Depth Size S—

4 x 1.85 x 2.3

—M4M4

—77

0.200.200.18

KSUW2-R1•KSUW2-R1J12•KSUW2-R1J14

—4 x 1.85 x 2.3

—M4M4

—77

0.200.200.18

KSUW2-R2•KSUW2-R2J12•KSUW2-R2J14

—5 x 2.35 x 2.35 x 2.3

—M4M4M4

—999

0.390.380.370.36


—5 x 2.35 x 2.35 x 2.3

—M4M4M4

—999

0.390.380.370.36


—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.630.620.590.580.56


—5 x 2.36 x 2.86 x 2.86 x 2.8

—M4M5M5M5

—10101010

0.630.620.590.580.56




c Keyways are made according to JIS B1301 standards, Js 9 tolerance.d For products having a tapped hole, a set screw is included.


We welcome your requests for

For details, see page VI.

Custom GearsCustom Gears

Best ever quality in a Stock Rack series!

562

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