Wire Rope Cross Sections

6 x 7

Poly Core 6 x 12

Marine Rope 6 x1 7

Filler Rope 6 x19 Seale

6 x 19 Warrington

6 x 21 Filler Wire

6 x 24

(Mooring Line) 6 x 25

Filler Wire 6 x 26

Warrington-Seale

6 x 27 Seale

6 x 31 Filler Wire

6 x 31 Warrington-

Seale

6 x 36

Filler Wire 6 x 36

Warrington-Seal 6 x 37

Warrington 6 x 41

Warrington-Seal 6 x 41

Filler Wire-Seale 6 x 46

Filler Wire-Seale

6 x 49

Filler Wire-Seale 6 x40

Filler Wire 6 x 26

Warrington-Seale

6 x 27 Seale-

Warrington 6 x 31 Seale

6 x 31 Filler Wire

6 x 8

(Mooring Line) 6 x 25

Filler Wire 6 x 30

Warrington-Seale 6 x 42 Seale

5 x 19 Filler Wire

6 x 3 x 31 Warrington-Seale

18 x 7

Non-rotating 19 x 7

Non-rotating 7 x 7

Glavanized & Stainless Steel

Wire Rope

7 x 7 x7 Glavanized &

Stainless Steel Wire Rope

7 x 7 x7 Cable-Laid

7 x 7 x 19 Cable-Laid

1 x 3

Strand 1 x7

Strand 1 x 19 Strand

1 x 37 Strand

7 x 7 x 41 Filler Wire

Recommended Applications for Wire Ropes

USE SIZE (in.) CONSTRUCTION LAY CORE GRADE Clamshell

Holding & Closing Lines Boom Hoist Line Tag Line

1/2 & Up 1/2 & Up

All 3/8 & Up

6 x 2 5 FW or 6 x 36 WS

6 x 19 or 6 x 37 Class 6 x 19 Class 6 x 37 Class

RRL RRL RRL RRL

IWRC IWRC IWRC IWRC

EIPS EIPS EIPS EIPS

Crawler & Truck Cranes

Hoist Line Boom Hoist Line Whip Line

All All

3/8---1-1/2

6 x 19 Class or 19 x 19

6 x 19 Class 19 x 7 or 35 x 7

RRL RRL RRL

IWRC IWRC IWRC

EIPS EIPS EIPS

Cranes & Hoists

Overhead Ladle Crane

All

All

6 x 19 Class

6 x 37 Class

RRL RRL RRL RRL RRL

IWRC IWRC IWRC IWRC IWRC

EIPS EIPS EIPS EIPS EIPS

Dragline

Hoist Line Drag Line Boom Hoist

Up to 1-1/4 1-3/8 & Up 3/4---1-1/2 1-5/8---3 3 & Up

1/2 & Up

6 x 19 or 8 x 19 Class 6 x 37 Class 8 x 19 Class 8 x 37 Class 8 x 37 Class 6 X 19 Class

RLL RLL RLL RLL RRL RRL

IWRC IWRC IWRC IWRC IWRC IWRC

EIPS EIPS EIPS EIPS EIPS EIPS

Shovels

Hoist Line Crowd & Retract Boom Hoist Trip Rope

Up to 1 1/8 1-1/4 & Up 3/4 & Up

1/2---1-1/4 1-3/8 & Up

3/8---1 1" & Up

6 x 19 CL or 8 x 19 CL

6 x 37 CL or 8 X 19 CL

6 x 37 CL or 8 X 19 CL

6 x 19 CL or 8 x 19 CL

6 x 37 CL or 8 X 19 CL

6 x 37 CL or 8 X 19 CL

6 x 37 CL or 8 X 19 CL

RLL RLL RLL RRL RRL RRL RRL

IWRC IWRC IWRC IWRC IWRC IWRC IWRC

EIPS EIPS EIPS EIPS EIPS IPS IPS

Logging Ropes

Chokers Winch Lines

All All

6 X 19 Class 6 X 19 Class

RRL RRL

IWRC IWRC

EIPS EIPS

Mining

Slope Rope Shaft Hoist Ropes Slusher Rope Mining Machine Rope

All All All All

6 x 19 S 6 x 19 S or 6 x 25 FW 3 x 19 S or 6 x 19 S 6 x 36 WS or 6 x 41

WS

RLL RLL or RRL RRL RRL

FIBER FIBER IWRC IWRC

IPS IPS IPS

EIPS

Marine Ropes

Towing Hawser Mooring Lines Cargo Falls

All All All

6 x 37 Class 6 x 19 or 6 x 37 Class

6 x 37 Class

RRL RRL RRL

IWRC IWRC IWRC

EIPS EIPS EIPS

Oil Field

Rotary Drill Lines Sand Lines Tubling Line Cable Tool Line

3/4---2 All All All

6 x 19 S, 6 x 21 S, 6 x 26 NS 6 x 7

6 x 26 WS 6 x 21 S

RRL RRL

RRL or LRL

IWRC POLY FIBER IWRC POLY FIBER

EIPS IPS

EIPS IPS

Offshore

Rotary Drill Lines Riser Tensioner Lines Guide Lines Sand Lines Pendant Lines Crane-Main Hoist Crane-Auxiliary Hoist Anchor Lines Heavy Lift Slings Heavy Lift Slings

1---2 1-1/4---2 1/2---1

1/2---5/8 1-1/2---3 3/4

3/8---2 3/8---2-1/4 1-3/8---6 1-1/2---4 3-1/2---10

6 x 19 S, 6 x 21 S, 6 x 26 CL

6 x 37 Class 6 x 19 Class

6 x 7 6 x 19 Class or 6 x 37

Class 6 x 37 Class or 35 x 7

Class 35 x 7 Class 6 x 37 Class 6 x 37 Class

RRL RLL RRL RRL RRL RRL RRL RRL RRL

RLL or LLL

IWRC IWRC IWRC POLY FIBER IWRC IWRC IWRC IWRC IWRC IWRC

EIPS IPS IPS IPS

EIPS IPS or EIPS EIPS EIPS EIPS EIPS

Definition of Abbreviations

Grade Construction Lay Core IPS- Improved Plow Steel EIPS - Extra Improved Plow Steel GIPS - Galvanized Improved Plow Steel EEIPS - Extra, Extra Improved

FW - Filler Wire WS - Warrington Seale SFW - Seale Filler Wire RR - Rotation

RRL - Right Regular Lay RLL - Right Lang Lay LRL - Left Regular Lay

IWRC - Wire Rope Core FC - Fiber Core Fiber - Hemp or Poly Core Poly - Polypropylene

IPS- Improved Plow Steel EIPS - Extra Improved Plow Steel GIPS - Galvanized Improved Plow Steel EEIPS - Extra, Extra Improved Plow Steel EEEIPS - Extra, Extra, Extra Improved Plow Steel

FW - Filler Wire WS - Warrington Seale SFW - Seale Filler Wire RR - Rotation Resistant W - Warrington S - Seale

RRL - Right Regular Lay RLL - Right Lang Lay LRL - Left Regular Lay LLL - Left Lang Lay RAL - Right Attended Lay LAL - Left Attended Lay

IWRC - Wire Rope Core FC - Fiber Core Fiber - Hemp or Poly Core Poly - Polypropylene Core

Sheave and Drum Ratios

Construction* Suggested D/d Ratio**

Minimum D/d Ratio**

6 x 7 72 42 19 x 7 or 18 x 7 Rotation Resistant 51 34

6 x 19 S 51 34 6 x 25 B Flattened Strand 45 30 6 x 27 H Flattened Strand 45 30 6 x 30G Flattened Strand 45 30

6 x 21 FW 45 30 6 x 26 WS 45 30 6 x 25 FW 39 26 6 x 31 WS 39 26

6 x 37 SFW 39 26 6 x 36 WS 35 23

6 x 43 FWS 35 23 6 x 41 WS 32 21

6 x 41 SFW 32 21 6 X 49 SWS 32 21

6 X 43 FW (2 op) 28 18 6 x 46 SFW 28 18 6 x 46 WS 28 18 8 x 19 S 41 27

8 x 25 FW 32 21 6 x 42 Tiller 21 14

* WS - Warrington Seale FWS - Filler Wire Seale SFW - Seale Filler Wire SWS - Seale Warrington Seale S - Seale FW - Filler Wire **D=tread diameter of sheave d= nominal diameter of rope To find any tread diameter from this table, the diameter for the rope construction to be used is multiplied by its nominal diameter (d). For example, the minimum sheave tread diameter for a 1/2" 6 x 21 FW rope would be 1/2" (nominal diameter) x 30 (minimum ratio) or 15". NOTE: These values are for reasonable service. Other values are permitted by various standards such as ANSI, API, PCSA, HMI, CMAA, etc. Smaller values affect rope life.

Calculating Reel Capacity SHIPPING REEL CAPACITY While it is virtually impossible to calculate the precise length of wire rope that can be spooled on a reel or drum, the following provides a sufficiently close approximation.

Capacities In Feet Of Rope = (A + B) ACK

Example:

How much 1 1/4" diameter rope can be spooled on a drum having a 36" diameter flange, 24" diameter drum and 30" width between flanges?

Using the above formula the number of feet equals

(6 + 24) x 6 x 30 x .152 or (A + B) x A x C x K Answer - 821 feet

The value of "K" is taken from the previously calculated table of values shown below. For 1 1/4 diameter this value "K" is .152 "K" FACTORS** (0.2618 divided by rope diameter (squared)

Diam (inches) K

Diam (inches) K

Diam (inches) K

1/16 49.8 1/2 0.925 1-3/8 0.127 3/32 23.4 9/16 0.741 1-1/2 0.107 1/8 13.6 5/8 0.607 1-5/8 0.0886 5/32 8.72 11/16 0.506 1-3/4 0.0770 3/16 6.14 3/4 0.428 1-7/8 0.0675 7/32 4.59 13/16 0.354 2 0.0597 1/4 3.29 7/8 0.308 2-1/8 0.0532 5/16 2.21 1 0.239 2-1/4 0.0476 3/8 1.58 1-1/8 0.191 2-3/8 0.0419 7/16 1.19 1-1/4 0.152 2-1/2 0.0380

* This formula is based on uniform rope winding on the reel. It will not give correct results if the winding is non-uniform. The formula also assumes that there will be the same number of wraps in each layer. While this is not strictly correct, there is no appreciable error in the result unless the traverse of the reel is quite small relative to the flange diameter ("H").

** The values given for "K" factors take normal rope oversize into account.

Criteria for Replacement of Wire Ropes When to Replace Wire Rope - Based on Number of Broken Wires

Galvanized

Number Broken Wires in Running Ropes

Number Broken Wires in Standing Ropes

ANSI* Standard

Equipment In One Rope Lay

In One Strand

In One Rope Lay

At End Connection

B30.2 Overhead & Gantry Cranes 12 4 Not Specified Not Specified B30.4 Portal, Tower & Pillar

Cranes 6 3 3 2

B30.5 Crawler, Locomotive & Truck Cranes

6 3 3 2

B30.6 Derricks 6 3 3 2 B30.7 Base Mounted Drum Hoists 6 3 3 2 B30.8 Flotaing Cranes & Derricks 6 3 3 2

B30.16 Overhead Hoists 12 4 Not Specified Not Specified A10.4 Personnel Hoists 6** 3 2** 2 A10.5 Material Hoists 6** Not

Specified Not Specified Not Specified

* American National Standards Institute ** Also remove for 1 valley break.

A wire broken under a tensile load that exceeds its strength by the "cup and cone" configuration at the fracture point (a). The necking down of the wire at this point shows that failure occurred while the wire retained its ductility. Shear-tensile fracture (b) occurs in wire subjected to a combination of transverse and axial loads. Fatigue breaks are usually chacterized by squared-off ends perpendicular to the wire either straight across or Z-shaped (c & d).

Galvanized & Stainless Steel Wire Rope

7 x 7

(Shown Vinyl Coated)

7 x 19

(Shown Vinyl Coated)

Galvanized

Diameter in Inches

Construction Minimum Break Strength/Lbs.

Rated Load/Lbs.

WT. Per 100 Ft./ Lbs.

1/16 7 x 7 480 100 .8 3/32 7 x 7 920 180 1.6 1/8 7 x 7 1,700 340 2.8 1/8 7 x 19 2,000 400 2.9 5/32 7 x 7 2,600 520 4.3 5/32 7 x 19 2,800 560 4.5 3/16 7 x 7 3,700 740 6.2 3/16 7 x 19 4,200 840 6.5 7/32 7 x 19 5,600 1,120 8.6 1/4 7 x 19 7,000 1,400 11.0 9/32 7 x 19 8,000 1,600 13.9 5/16 7 x 19 9,800 1,960 17.3 3/8 7 x 19 14,400 2,880 24.3

Stainless Steel

Diameter in Inches

Construction Minimum Break Strength/Lbs.

Rated Load/Lbs.

WT. Per 100 Ft./ Lbs.

1/16 7 x 7 480 100 .8 3/32 7 x 7 920 180 1.6 1/8 7 x 7 1,700 340 2.8 1/8 7 x 19 1,760 350 2.9 5/32 7 x 7 2,600 520 4.3 5/32 7 x 19 2,400 480 4.5 3/16 7 x 7 3,700 740 6.2 3/16 7 x 19 3,700 740 6.5 7/32 7 x 19 5,000 1,000 8.6 1/4 7 x 19 6,400 1,280 11.0 9/32 7 x 19 7,800 1,560 13.9 5/16 7 x 19 9,000 1,800 17.3 3/8 7 x 19 12,000 2,400 24.3

Vinyl Coated (Galvanized)

Diameter in "Coated Construction Minimum Break Rated WT. Per

Inches To" Strength/Lbs. Load/Lbs. 100 Ft./ Lbs.

3/32 3/16 7 x 7 920 180 3 1/8 3/16 7 x 7 1,700 340 4 1/8 3/16 7 x 19 2,000 400 4 3/16 1/4 7 x 19 4,200 840 9 1/4 5/16 7 x 19 7,000 1,400 14 3/16 7 x 7 3,700 740 6.2 3/16 7 x 19 4,200 840 6.5 7/32 7 x 19 5,600 1,120 8.6 1/4 7 x 19 7,000 1,400 11.0 9/32 7 x 19 8,000 1,600 13.9 5/16 7 x 19 9,800 1,960 17.3 3/8 7 x 19 14,400 2,880 24.3

Other sizes, constructions, metals, and coatings available on request.

Metric Crane Ropes

* Available in inches and millimeters * Super Rotation Resistance * Can be used with in-line Swivels * 1770 thru 2160 Grades * Drawn Galvanized available, for added corrosion protection, at same strength. * Regular or Compacted Strand

2160 Grade (Approximate)

Nominal Diameter mm-1/+4%

Mass LBS/FT

MBL LBS

10 0.312 31,580 12 0.450 30,570 13 0.538 36,460 14 0.622 42,260 15 0.712 49,000 16 0.800 54,400 17 0.907 61,370 18 1.011 70,140 19 1.136 78,230 20 1.297 87,450 21 1.431 96,660 22 1.556 105,210 23 1.699 114,650 24 1.848 123,950 25 2.009 134,430 1" 2.100 147,700

26 2.157 144,320 28 2.553 169,730 29 2.688 177,590 30 2.923 192,210 32 3.313 217,160 34 3.736 245,040 36 4.193 273,140

All specifications included herein are subject to change without notice.

Wire Rope Compacted Strand

Flex-X® and Hyperform®

? Mining, industrial, construction, logging, and oilfield applications.

? Stability, strength, fatigue resistance, and abrasion resistance.

? All popular sizes.

? Longer service life.

Flex-X® 6 x 26 should be used in applications where increased strength, stability, and abrasion resistance are beneficial. When properly used, Flex-X® 6 x 26 can result in longer service life. Boom hoist ropes and drag ropes and mainline ropes in logging are a few of many recommended applications.

? Single-part multi-part hoist lines.

? Designers/Engineers: ideal when machinery space and weight savings are important.

(See metric core ropes)

? Important: Do not exceed 5:1 design factor.

? Ideally suited to rugged applications.

This rotation resistant, higher strength rope provides extra value in both original equipment designs and replacement applications. Compared to standard 19 x 7, Flex-X provides higher strength in a smaller diameter, with better resistance to drum crushing.

Compacted Strand

6 x 26 19 x 19

Diameter (inches)

Approx WT. (Lbs./FT)

Nominal Strength (tons of 2000 lb.)

Approx WT. (Lbs./FT)

Nominal Strength (tons of 2000 lb.)

1/4 .131 3.91 .127 3.74 5/16 .218 6.06 .212 5.8

3/8 .32 8.80 .31 8.3 7/16 .41 11.9 .40 11.2 1/2 .55 15.3 .54 14.6

9/16 .70 19.3 .69 18.5 5/8 .86 22.7 .85 22.7 3/4 1.25 32.4 1.25 32.4 7/8 1.67 43.8 1.68 43.8 1 2.18 56.9 2.17 56.9

1-1/8 2.71 71.5 2.75 71.5 1-1/4 3.43 87.9 3.45 87.9 1-3/8 4.25 106 4.33 106 1-1/2 5.01 125 5.11 125

Nominal Strengths of Wire Rope 6 x 31 - 6 x 36

6 x 37 Classification/Bright (Uncoated), or Drawn Galvanized, Fiber Core

* To convert to Kilonewtons (kN), multiply tons (nominal breaking strength) by 8.896; 1 lb = 4.448 newtons (N). For Regular Galvanized Strengths, Deduct 10%.

Nominal Diameter Nominal Strength* Approximate MassImproved Plow Steel

Inches MM TONS METRIC TONS LB/FT KG/M1/4 6.5 2.74 2.49 0.11 0.165/16 8.0 4.26 3.86 0.16 0.243/8 9.5 6.10 5.53 0.24 0.357/16 11.5 8.27 7.50 0.32 0.481/2 13.0 10.70 9.71 0.42 0.639/16 14.5 13.50 12.20 0.53 0.795/8 16.0 16.70 15.10 0.66 0.983/4 19.0 23.80 21.60 0.95 1.417/8 22.0 32.20 29.20 1.29 1.921 26.0 41.80 37.90 1.68 2.50

1-1/8 29.0 52.60 47.70 2.13 3.171-1/4 32.0 64.60 58.60 2.63 3.911-3/8 35.0 77.70 70.50 3.18 4.731-1/2 38.0 92.00 83.50 3.78 5.631-5/8 42.0 107.00 97.10 4.44 6.611-3/4 45.0 124.00 112.00 5.15 7.661-7/8 48.0 141.00 128.00 5.91 8.80

2 51.0 160.00 145.00 6.72 10.002-1/8 54.0 179.00 162.00 7.59 11.302-1/4 57.0 200.00 181.00 8.51 12.702-3/8 61.0 222.00 201.00 9.48 14.102-1/2 64.0 244.00 221.00 10.50 15.602-5/8 67.0 268.00 243.00 11.60 17.302-3/4 70.0 292.00 265.00 12.70 18.902-7/8 74.0 317.00 287.00 13.90 20.70

3 77.0 344.00 312.00 15.10 22.503-1/8 80.0 371.00 336.00 16.40 24.403-1/4 83.0 399.0 362.00 17.70 26.30

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Nominal Strengths of Wire Rope 6 x 25 - 6 x 26

* To convert to Kilonewtons (kN), multiply tons (nominal breaking strength) by 8.896; 1 lb = 4.448 newtons (N). For Regular Galvanized Strengths, Deduct 10%.

6 x 19 Classification/Bright (Uncoated), or Drawn Galvanized, IWRC

Nominal Diameter Nominal Strength* Approximate Mass

Improved Plow Steel Extra Improved Plow Steel Inches MM TONS METRIC TONS TONS METRIC TONS LB/FT KG/M

1/4 6.5 2.94 2.67 3.40 3.08 0.12 0.175/16 8.0 4.58 4.16 5.27 4.78 0.18 0.273/8 9.5 6.56 5.95 7.55 6.85 0.26 0.39

7/16 11.5 8.89 8.07 10.20 9.25 0.35 0.521/2 13.0 11.50 10.40 13.30 12.10 0.46 0.68

9/16 14.5 14.50 13.20 16.80 15.20 0.59 0.885/8 16.0 17.70 16.20 20.60 18.70 0.72 1.073/4 19.0 25.60 23.20 29.40 26.70 1.04 1.557/8 22.0 34.60 31.40 39.80 36.10 1.42 2.111 26.0 44.90 40.70 51.70 46.90 1.85 2.75

1-1/8 29.0 56.50 51.30 65.00 59.00 2.34 3.481-1/4 32.0 69.40 63.00 79.90 72.50 2.89 4.301-3/8 35.0 83.50 75.70 96.00 87.10 3.50 5.211-1/2 38.0 98.90 89.70 114.00 103.00 4.16 6.191-5/8 42.0 115.00 104.00 132.00 120.00 4.88 7.261-3/4 45.0 133.00 121.00 153.00 139.00 5.67 8.441-7/8 48.0 152.00 138.00 174.00 158.00 6.50 9.67

2 51.0 172.00 156.00 198.00 180.00 7.39 11.002-1/8 54.0 192.00 174.00 221.00 200.00 8.35 12.402-1/4 57.0 215.00 195.00 247.00 224.00 9.36 13.902-3/8 61.0 239.00 217.00 274.00 249.00 10.40 15.502-1/2 64.0 262.00 238.00 302.00 274.00 11.60 17.302-5/8 67.0 288.00 261.00 331.00 300.00 12.80 19.002-3/4 70.0 314.00 285.00 361.00 327.00 14.00 20.80

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Nominal Strengths of Wire Rope 6x19 - 6 x 21

6 x 19 Classification/Bright (Uncoated), or Drawn Galvanized, Fiber

Core Nominal Diameter Nominal Strength* Approximate Mass

Improved Plow Steel Inches MM TONS METRIC TONS LB/FT KG/M

1/4 6.5 2.74 2.49 0.11 0.16 5/16 8.0 4.26 3.86 0.16 0.24 3/8 9.5 6.10 5.53 0.24 0.35 7/16 11.5 8.27 7.50 0.32 0.48 1/2 13.0 10.70 9.71 0.42 0.63 9/16 14.5 13.50 12.20 0.53 0.79 5/8 16.0 16.70 15.10 0.66 0.98 3/4 19.0 23.80 21.60 0.95 1.41 7/8 22.0 32.20 29.20 1.29 1.92 1 26.0 41.80 37.90 1.68 2.50

1-1/8 29.0 52.60 47.70 2.13 3.17 1-1/4 32.0 64.60 58.60 2.63 3.91 1-3/8 35.0 77.70 70.50 3.18 4.73 1-1/2 38.0 92.00 83.50 3.78 5.63 1-5/8 42.0 107.00 97.10 4.44 6.61 1-3/4 45.0 124.00 112.00 5.15 7.66 1-7/8 48.0 141.00 128.00 5.91 8.80

2 51.0 160.00 145.00 6.72 10.00 2-1/8 54.0 179.00 162.00 7.59 11.30 2-1/4 57.0 200.00 181.00 8.51 12.70 2-3/8 61.0 222.00 201.00 9.48 14.10 2-1/2 64.0 244.00 221.00 10.50 15.60 2-5/8 67.0 268.00 243.00 11.60 17.30 2-3/4 70.0 292.00 265.00 12.70 18.90

* To convert to Kilonewtons (kN), multiply tons (nominal breaking strength) by 8.896; 1 lb = 4.448 newtons (N). For Regular Galvanized Strengths, Deduct 10%.

Wire Rope Specifications

TYPES OF CORES

An important point to consider is the selection of the proper type of core needed in the rope. Wire Ropes are made with either fiber core or steel wire core.

1) Fiber Core (FC) This center is made of either natural fibers or polypropylene and offers greater elasticity than the independent Wire Rope Core.

2) Independent Wire Rope Core (IWRC) This center is usually composed of a separate 7x7 wire rope designated as IWRC. The steel core increases the strength by 7% and the weight by 10%. These steel cores provide more substantial support than fiber cores to the outer strands during the rope's operating life. Steel centers resist crushing, are more resistant to heat and increase the strength of the rope.

DESIGN FACTOR

The Design Factor being both the ratio between the minimum Breaking load of the rope and the rated capacity (RC) tells at what percentage of its ultimate strength a wire rope is operating. The Design Factor takes into consideration both normal rope wear and potential stresses in various applications. The best practice in determining an adequate design factor is to analyze the specific conditions involved inn each individual installation. The following example shows how to determine the Design Factor: If a rope is working under a max. operating load of 10,000 lbs. and is having an ultimate strength of 50,000 lbs., the factor is 5 which means it is operating at 20% of its ultimate strength.

FLEET ANGLE

The fleet angle is the angle formed between the rope running to or from the extreme left or right of the drum and a line drawn from the center of the sheave normal to the axis of the drum. For optimum efficiency, the angle here should not exceed 1 1/2 degrees for a smooth drum, or 2 degrees for a grooved drum. If the fleet angle is larger than the recommended limits, it can cause bad winding on smooth drums and rubbing against the flanges of the grooves. Too small a fleet angle should also be avoided since it will cause the rope to pile up against the flange head.

Before installing any wire rope that winds onto a drum, the fleet angle should be checked and if found improper, conditions should be corrected.

SHEAVE ALIGNMENT

Proper alignment of sheaves is essential. The main sheave should line up with the center of the hoisting drum, otherwise both the rope and sheave flanges will be subjected to severe and rapid deterioration will occur. If

rope speeds are high, sheaves should also be balanced.

NOTE:

Wire rope products will break if abused, misused or overused. Regular inspection and maintenance are necessary. Consult industry recommendation and OSHA standards before using.

Minimum Sheave and Drum-Groove Dimensions*

Groove Radius

Groove Radius

Groove Radius

Groove Radius

Nominal Rope

Diameter

Nominal Rope

Diameter New New Worn Worn 1

inches 2

mm 3

inches 4

mm 5

inches 6

mm 1/4 6.4 .135 3.43 .129 3.28

5/16 8.0 .167 4.24 .160 4.06 3/8 9.5 .201 5.11 .190 4.83

7/16 11 .234 5.94 .220 5.59 1/2 13 .271 6.88 .256 6.50

9/16 14.5 .303 7.70 .288 7.32 5/8 16 .334 8.48 .320 8.13 3/4 19 .401 10.19 .380 9.65 7/8 22 .468 11.89 .440 11.18 1 26 .543 13.79 .513 13.03

1-1/8 29 .605 15.37 .577 14.66 1-1/4 32 .669 16.99 .639 16.23 1-3/8 35 .736 18.69 .699 17.75 1-1/2 38 .803 20.40 .759 19.28 1-5/8 42 .876 22.25 .833 21.16 1-3/4 45 .939 23.85 .897 22.78 1-7/8 48 1.003 25.48 .959 24.36

2 52 1.085 27.56 1.025 26.04 2-1/8 54 1.137 28.88 1.079 27.41 2-1/4 58 1.210 30.73 1.153 29.29 2-3/8 60 1.271 32.28 1.199 30.45 2-1/2 64 1.338 33.99 1.279 32.49 2-5/8 67 1.404 35.66 1.339 34.01 2-3/4 71 1.481 37.62 1.409 35.79 2-7/8 74 1.544 39.22 1.473 37.41

3 77 1.607 40.82 1.538 39.07 3-1/8 80 1.664 42.27 1.598 40.59 3-1/4 83 1.731 43.97 1.658 42.11 3-3/8 87 1.807 45.90 1.730 43.94 3-1/2 90 1.869 47.47 1.794 45.57 3-3/4 96 1.997 50.72 1.918 48.72

4 103 2.139 54.33 2.050 52.07 4-1/4 109 2.264 57.51 2.178 55.32 4-1/2 115 2.396 60.86 2.298 58.37 4-3/4 122 2.534 64.36 2.434 61.82

5 128 2.663 67.64 2.557 64.95 5-1/4 135 2.804 71.22 2.691 68.35 5-1/2 141 2.929 74.40 2.817 71.55 5-3/4 148 3.074 78.08 2.947 74.85

6 154 3.198 81.23 3.075 78.11

* Values given are applicable to grooves in sheaves and drums; they are not generally suitable for pitch design since this may involve other factors.

Further, the dimensions do not apply to traction-type elevators; in this circumstance, drum-and sheave-groove tolerances should conform to the elevator manufacturer's specifications.