csb filament wound high load self-lubricating bearings · csb filament wound high load...

CSB Filament Wound High Load Self-lubricating Bearings

ZHEJIANG CHANGSHENG SLIDING BEARING CO.,LTD.

The National High-Tech Company, 28 patents approved.

Established in 1995, Specialized in the manufacturing and marketing of oilless self-lubricating materials.

2Having strong work force of over 600 with 55000M land, worldwide supplying by international sales net.

Products range: Metal-polymer composite bearings, Metallic Self-lubricating bearings and Engineering Plastic bearings and

Filament wound bearings.

Widely applied in Automotive industries, Construction machineries, Agriculture machineries, Crane machineries, Plastic

machineries and so on. In brief our slide bearings can be used wherever there is rotatory movement or rectilinear motion

between mechanical parts.

28

CSB 1995

2600 55000M 8

CSB 2005

CSB FILAMENT WOUND SELF-LUBRICATING BEARINGS

01 CSB Bearings

Headquarter

ISO/TS16949

All CSB Products are manufactured under ISO/TS16949 approved quality management systems.

02CSB Bearings

PTFE

CSB, as the best of all self-lubricated bushing manufacturer in China, has already developed and covered most of the

industries on the metal polymer composite bearings, mono-metallic bearings, engineering plastic bearings and filament

would bearings after years of dedications on the researching and design in this area. This booklet introduces the new

maintenance free filament wound composite bearing with the back material of high strength epoxy resin and lubricating

layer of PTFE fiber and special lubricating fiber. Such new material combines the lubricating features of non-metallic

bushing and high load feature of metallic bushings. It has optimum anti-wear and low friction coefficient under high load

and low speed working conditions without lubricant.

Branch

03 CSB Bearings

Design Idea

CSB

CSB-CR

Metallic self-lubricated bushing has the advantages of

high load, good wearing feature and good thermal

expansion characteristics but there is some shortage on

erosion resistance and shock absorbing. At the same

time, the traditional non-metallic bushing has the

advantages of erosion resistance and light weight but

there are some shortages on the anti-shock and low load.

CSB never stopped the researching on the new

applications of different bushings and in order to

combine the advantages of metallic bushings and

traditional non-metallic bushings, the new material

filament wound composite bearing CSB-CR type has

been successfully developed. This is a supply of gap for

the high load non-metallic bearing products.

Material Structure

CSB-CR

PTFE

The back material of CSB-CR series material is high

strength glass fiber with epoxy resin and the lubricating

layer of it is PTFE wound fiber or special lubricating fiber.

Therefore, this special structure performs an outstanding

anti-wear feature and low friction coefficient under high

load and low speed condition. Furthermore, this

absolutely new idea gives better solution for high load

and excellent wear resistance possibility.


1. The lubricating layer, which has very low friction

coefficient, superior anti-wear feature and scratch

resistance, is made by special PTFE fiber and high strength

artificial fiber compound. It provides excellent self-lubricating

features and good anti-wear feature during dry operation.

2. The back material comprises of high strength epoxy glass

fiber with excellent erosion resistance feature make it

possible to be used in water or sea.

3. The maxim dynamic load is 140Mpa and also certain

impact load is permissible. It has good shock absorb

feature and self-align characteristics.

4. The material could form an effective solid lubricating film

to prevent the bearing stick to the shaft during operation.

5. The non-metallic material is isolated and light in mass. It

is 75% lighter than steel and 30% lighter than Aluminum.

6. This filament wound composite bearing is suitable to be

used at the frequently start and stop positions with rotating,

oscillating and linear motion.

7. The bearing is suitable to be used under the conditions of

lubricating needed but hard to insert lubricant or lubricant

prohibited.

8. Comparing to oil lubricating bearings, the filament wound

composite bearing is suitable for wider temperature range

from -100 to +160 .

9. Comparing to other non-metallic bearings, this kind of

material could be used in different media including air, oil

and water because of its low water absorption

feature and linear expansion coefficient

similar with of steel.

10. The thermal expansion factor

of the material is similar with

steel and cast iron.

Material Characteristics

1. PTFE

2.

3. 140MPa

4.

5.

75 30

6.

7.

8.

-100 ~+160

9.

10. CSB

04CSB Bearings

Typical Applications

CSB-CR

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

05 CSB Bearings

With the excellent features above mentioned, CSB-CR

series filament wound composite bearings could be

widely used to the frequently start and stop

positions with rotating, oscillating and linear

motion. The application of this new material is

more popular than that of the previously developed

engineering plastic bushings (EP series).

1. Construction machineries

2. Agriculture machineries

3. Lifting machines

4. Cranes

5. Material handling machineries

and transmission parts.

6. Water craft machineries

7. Civil Project

8. Packing machineries

9.Port machineries

10. Valves, Hydraulic

transmission parts


06CSB Bearings

07 CSB Bearings

MPa*m/s

m/s

MPa

MPa

MPa

MPa

HRM

Um/m

2.00

1.6

0.03 0.12

-100 +160

0.20

420

240

100

550

95

-613 10

2.00

2.0

0.03 0.12

-100 +160

0.20

420

240

160

550

95

-613 10

2.00

1.8

0.03 0.12

-100 +160

0.20

420

240

140

550

95

-613 10

2.00

1.6

0.02 0.12

-100 +200

0.40

420

240

30

550

95

-613 10

Designation

Basic type

Density

PVMax. PV

Coefficient of friction

Working Temp.

Max. Speed

Max. load

Static load

Dynamic load

Radial compressive strength

Hardness

25 150Linear thermal expansion factor

Color

Unit

3g/cm

CSB-CRB

Standard

Coffee

CSB-CRG CSB-CRE CSB-CRP

High Load EconomicHigh speed

Black White

Technical Data

1.30

1.2

0.15 0.30

-40 +130

0.13

300

150

45

200

90

-640 10

CSB-CRF

General

Dark greyWhite

The Bearing

CSB-CRBCSB-CRG CSB-CRE CSB-CRP CSB-CRF


08CSB Bearings

Material Chemical Property

Alcohol

Methanol

Ethanol

Allyl

Butyl

Propyl

oxyhydrogen acetone

Solvent

Acetone

Toluene

Methyl Ethylic Ketone

Trichlorothylene

Benzene

10 Acid

Hydrochloric Acid

Boracic Acid

Acetic Acid

Sulfuric Acid

Nitrogen Acid

Carbonic Acid

Hydrofluoric Acid

Oil

Gear Oil

Engine Oil

Hydraulic Oil

Linseed Oil

Fuel

Gasoline

Jet Fuel

Diesel Oil

Petroleum

Sodium Hydroxide

Resistance

Yes

Yes

No

No

Yes

Yes

Yes

Yes

Yes

No

No

Yes

Yes

Yes

Yes

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Saline

Sodium Acetic acid

Sodium Carbonate

Amine Nitric Acid

Amine Chlorate

Bitter Salt

Gas

Butane

Ozone

Nitrogen

Natural Gas

Ethyne

Hydrogen

Fluorin

Chlorine

10 Alkali

Sodium Hydroxide

Calcium Oxide

Aluminum hydroxide

Others

Freon

Carbinol

Sodium Nitrate

Ethylene Glycol

Ammonia

100 Boiled Water

Resistance

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

Yes

No

Yes

Yes

Yes

Yes

Yes

No

No

Sliding layer Continuous wound PTFE and high-strength

fibers encapsulated as internally lubricating liner.

Backing Continuous wound glass fiber encapsulated in

a high temperature epoxy resin.

PTFE

Material structure

Feature

Very high load capacity

Excellent impact resistance

Very good chemical resistance

Low friction and good anti-wear properties

Price Level: Highest

Technical Data

Typical Application

Hydraulic cylinder pivots

Construction machinery arm bushes

Boom lifts, scissor lifts

Cranes, material handling equipment

Port machinery

Package machine

CSB-CRG CRG High Load Bearings

Description

Max. Load

Static Load

Dynamic Load

Max. Speed

PV Max. PV Value

Coefficient of friction (Dry)

Temperature

Unit

MPa

MPa

M/s

MPa*M/s

Data

240

160

0.20

2.0

0.03 0.12

-100 +160

09 CSB Bearings

Enhanced Epoxy Resin

Special Fiber

PTFE PTFE Fiber

Lubricant Lubricate Layer


CSB-CRB CRB Standard Bearings

Technical Data

Sliding layer Continuous wound PTFE and high-strength

fibers encapsulated in as internally lubricating layer.

Backing Continuous wound glass fiber encapsulated in a

high temperature epoxy resin.

PTFE

Material structure

Medium to high load capacity

Good impact resistance

Very good chemical resistance

Lower friction and good wear properties

Price Level: High

Feature

Typical Application

Description

Max. Load

Static Load

Dynamic Load

Max. Speed

PV Max. PV Value


Temperature

Unit

MPa

MPa

M/s

MPa*M/s

Data

240

140

0.20

1.8

0.03 0.12

-100 +160

Hydraulic cylinder pivots

Construction machinery arm bushes

Boom lifts, scissor lifts

Cranes, material handling equipment

Port machinery

Package machine

10CSB Bearings

Medium Strength Fiber


PTFE PTFE Fiber

Lubricant Lubricate Layer

CSB-CRE

Medium to high load capacity

Very good impact resistance

Low friction and good anti-wear properties.

Average anti-wear feature

Price Level: Average

Material structure

Feature

Sliding layer Continuous wound lubricant and sythetic

fiber encapsulated in as internally lubricating liner.



Technical Data

Typical Application

Description

Max. Load

Static Load

Dynamic Load

Max. Speed

PV Max. PV Value


Temperature

Unit

MPa

MPa

M/s

MPa*M/s

Data

240

100

0.20

1.6

0.03 0.12

-100 +160

11 CSB Bearings

Lifting equipment

Forklift

Material handling equipment

Package machinery

Air pump guide bearing

Agriculture machinery

CRE General Type Bearings

Synthetic Fiber


Lubricate Layer

Lubricant


CSB-CRP CRP High Speed Bearings

PTFE

Material structure

Feature

Sliding layer Laminated with compound PTFE tape as

bearing layer.



Technical Data

Description

Max. Load

Static Load

Dynamic Load

Max. Speed

PV Max. PV Value


Temperature

Unit

MPa

MPa

M/s

MPa*M/s

Data

240

30

0.40

1.6

0.02 0.12

-100 +200

Typical Application

Ball and butterfly trunnion bearing

Air pump guide bushes

Servo-motor bearings

Water dam bearings

Tie-bar guide bearing

Hydraulic pressure machinery

12CSB Bearings

Metal Powder

PTFE PTFE Filler


Lubricate Layer

Relatively low load capacity

Low friction co-efficient

High motion speed

Suitable for traverse motion

Inside machineable

Price level: Average

CRF Economic BearingsCSB-CRF

Relatively low load capacity

Relatively high friction co-efficeint

Suitable for oil lubricating applications

Average anti-wear feature

Completely machinable

Price Level: Low

CRF

Feature

Material structure This bearing material consist of fine woven cotton fabric

reinforced phenolic composites.

Technical Data

Typical Application

Description

Max. Load

Static Load

Dynamic Load

Max. Speed

PV Max. PV Value


Temperature

Unit

MPa

MPa

M/s

MPa*M/s

Data

150

45

0.13

1.2

0.15 0.30

-40 +130

13 CSB Bearings

Ball and butterfly trunnion bearing

Air pump guide bushes

Servo-motor bearings

Hydropower/dam bearings

Tie-bar guide bearing

Hydraulic power guide bush

Woven Cotton Fiber

Phenolic Resin

Lubricant


Bearing Housing

CSB-CR The housings mentioned in this booklet mating with the

CSB-CR series bearings are generally referred to rigid

steel or cast iron. If the housing is made of other

materials such as Aluminum alloy or non-metallic

material, the thermal expansion factory of such material

has to be taken into consideration because the friction

heat may result into inter fit clearance affect.

CSB

HRC35

Ra0.2-0.4

Proper heat treatment to suitable shaft material may

significantly improve the bearing life. It is recommended

that the minimum surface hardness of mating shaft must

to HRC35. It is also strongly recommended to have

chrome coating on the shaft surface under the heavy

load condition. The proper surface roughness of the

shaft could also decrease the friction coefficient to

extend the bearing life consequently. The shaft surface

roughness is suggested to be Ra0.2 to Ra0.4. For easy

installation and prevent the inner diameter from damage,

a proper chamfer at the end of the shaft is necessary.

Interferences and clearance

The clearance recommended by this booklet is usually

suitable for most of the applications under low speed

and high load. It is necessary to increase the install

clearance under certain high speed and high

temperature conditions in order not to cause seizure

between the mating parts.

Mating Shaft

Bearing lubricating

CSB-CR

/

CSB-CR series bearing is designed to run under dry

conditions, therefore necessary oiling or greasing may

reduce the friction coefficient and prevent containments

entering the bearing. Seals are also recommended after

installation of the bearings.

14CSB Bearings

CSB-CR

Before installing the bearing, the bearing surface must be

clean and ensure there is no containment in the housing.

The housing should be smooth and with proper chamfer

during installing. During the fitting of the bearing, the

bearing must be pressed into the housing by a step pin.

There must be also a chamfer on the shaft The design of

CSB-CR series bearing material is dry and maintenance-

free, but it is necessary to provide some oil or grease in

order to extend the bearing life by reducing the run-in time.

3.0mm

6.0mm

2

Generally we suggest using the dimensions listed in this

booklet. Considering the designed minimum wall thickness

of 3.0mm, the wall thickness under this size will reduce the

fit press in force of the bearings and also a wall thickness

greater than 6mm will not increase the load capacity of the

bearing as well. It is also suggested the bearing length will

not double to the inside diameter of the bearing, otherwise

the poor concentricity will shorten the bearing life.

Dimensions

Bearing Assembly

CSB-CRP CSB-CRF

Bearing Manufacturing

The backing material of CSB filament bearing is the high

strength glass fiber with high strength epoxy resin, it is

recommended to grind the outside diameter. For the inner

diameter, except CSB-CRP, CSB-CRF type could be

machined, the other types are not machinable. The cutting of

the length could be done by using abrasive saw or diamond

cutting tools.

Pressing Arbor

CompositeBearing

Pressing

(0.5-1.5) 20 5

d

d

-0.2-0.4

15 CSB Bearings


0.03 0.12

1 PV

1

Friction Coefficient

Friction Coefficient of filament Bearing is 0.03 0.12. The

main factors affect the Friction Coefficient are Load, Moving

method, Speed and Roughness of mating surfaces. Figure

1 shows the friction coefficient is going down while load is

increasing under the rotation method.

Figure 1: Load vs Friction Coefficient

2 50MPa

The Anti-wear property

2

Figure 2: Duration vs Wear off amount

0.12

0.08

0.04

0.00

0 20 40 60 80 100 120 140

70 60 50

45# HRC50 Ra=0.4

20~140MPa

1.0m/min

Specification: 70 60 50

Shaft: 45# HRC50, Ra=0.4

Load: 20~140MPa

Speed: 1.0m/min

Lubricate: Dry

0.15

0 100 200 300 400 500 600 700

0.09

0.03

0.00

0.12

0.06

50 40 30

45# HRC50 Ra=0.4

50MPa

1.0m/min, 45

Specification: 50 40 30

Shaft: 45# HRC50, Ra=0.4

Load: 50MPa

Speed: 1.0m/min,

Lubrication: Dry

45

16CSB Bearings

MPa

hr

mm

The main factors affect the anti-wear property are the load,

moving method, speed and roughness of mating surfaces.

Figure 2 shows the bearing wear off under room temperature

with the load of 50MPa when the bearing is swinging. It is

found the wear off increases sharply during the initial running-

in while the lubricant is transferred from the inner liner and a

smooth surface is created there of to form the lubricating

surface. After running-in period, it will maintain stable without

wear off.

2 2(D -d )

2(N/mm )

2(N/mm )

PV is the product of the specific bearing load P and the sliding

speed V which is very important design data. We recommend

lower design PV value will leads to longer service life. Also the

selected material must be kept not exceed the max. of material

load, speed, temp. and lower if possible.

Cylidrical bushes, flange bushes

Bearing Load

P=F

d L

F= Load N

d= Shaft Diameter mm

L= Bearing Length mm

Thrust washer

P=4F

F= Load N

D= Washer OD mm

d= Washer ID mm

Rotating motion

V=d n

1000 60(m/s)


n= / Rpm

Reciprocating motion

V=2s c

60(m/s)

s= Stroke distance m

c= Frequency /

Oscillating motion

V=d C

1000 360 60(m/s)


C= frequency /

= Oscillating angle

(P ) (P )act mean

As the factor of clearance, bushes chamfer, oil groove etc., the actual load (P )is higher than that of the theory of calculation (P ).act mean

P=F/d L

P >P >Pmax act mean

Pact

Pm

ax

Pmean

2PV=P V(N/mm m/s)

PV PV Factor Calculation

Velocity

17 CSB Bearings

PV ,PV

PV


15

16

18

20

22

25

28

30

35

40

45

50

55

60

65

70

75

80

85

90

95

100

110

120

130

140

150

Bearing Size

d

Recommend

0.1450.095

0.1450.095

0.1950.115

0.1960.116

0.1960.116

0.1960.116

0.2000.120

0.2000.120

0.2000.120

0.2000.120

0.2300.130

0.2300.130

0.2450.145

0.2450.145

0.2450.145

0.2450.145

0.2750.175

0.2750.175

0.2750.175

0.2750.175

0.3100.185

0.3100.185

0.3150.190

0.3400.215

0.3400.215

0.3400.215

0.3400.215

20

21

23

25

27

30

34

36

41

48

53

58

63

70

75

80

85

90

95

105

110

115

125

135

145

155

165

D

0.0750.045

0.0750.045

0.0950.045

0.0960.046

0.0960.046

0.0960.046

0.1000.050

0.1000.050

0.1000.050

0.1000.050

0.1050.055

0.1050.055

0.1200.070

0.1200.070

0.1200.070

0.1200.070

0.1250.075

0.1250.075

0.1250.075

0.1250.075

0.1350.085

0.1350.085

0.1350.085

0.1650.090

0.1650.090

0.1650.090

0.1650.090

Shafth7

Housing H7

15

16

18

20

22

25

28

30

35

40

45

50

55

60

65

70

75

80

85

90

95

100

110

120

130

140

150

20

21

23

25

27

30

34

36

41

48

53

58

63

70

75

80

85

90

95

105

110

115

125

135

145

155

165

0.024-0.075

0.024-0.075

0.024-0.095

0.025-0.096

0.025-0.096

0.025-0.096

0.025-0.100

0.025-0.100

0.025-0.100

0.025-0.100

0.025-0.105

0.025-0.105

0.040-0.120

0.040-0.120

0.040-0.120

0.040-0.120

0.040-0.125

0.040-0.125

0.040-0.125

0.050-0.135

0.050-0.135

0.050-0.135

0.050-0.140

0.050-0.165

0.050-0.165

0.050-0.165

0.050-0.165

0.020-0.139

0.020-0.139

0.020-0.189

0.020-0.192

0.020-0.192

0.020-0.192

0.020-0.196

0.020-0.196

0.020-0.200

0.020-0.200

0.025-0.230

0.025-0.230

0.025-0.235

0.025-0.235

0.025-0.235

0.025-0.235

0.050-0.265

0.050-0.265

0.050-0.270

0.050-0.270

0.050-0.295

0.050-0.295

0.050-0.300

0.050-0.325

0.050-0.330

0.050-0.330

0.050-0.330

15 20 25

15 20 25

15 20 25

15 20 30

15 20 30

20 30 40

20 30 40

20 30 40

30 40 50

30 40 60

30 40 60

40 50 60

40 55 70

40 60 80

50 60 80

50 70 90

50 70 90

60 80 100

60 80 100

60 80 120

60 80 120

80 100 120

80 100 120

100 120 150

100 120 150

100 150 180

120 150 180

L

CSB Products available against customer requirements.

Order Spec.ID OD

Assemblyinterference Standard Length

RunningClearance

CRG 35 41 30

Bearing Size Table

ID OD Length

Materials

Order Spec.

CRG, CRB, CRE, CRP, CRF

d

L-0.5

D

18CSB Bearings

CRG-1520-L

CRG-1621-L

CRG-1823-L

CRG-2025-L

CRG-2227-L

CRG-2530-L

CRG-2834-L

CRG-3036-L

CRG-3541-L

CRG-4048-L

CRG-4553-L

CRG-5058-L

CRG-5563-L

CRG-6070-L

CRG-6575-L

CRG-7080-L

CRG-7585-L

CRG-8090-L

CRG-8595-L

CRG-90105-L

CRG-95110-L

CRG-100115-L

CRG-110125-L

CRG-120135-L

CRG-130145-L

CRG-140155-L

CRG-150165-L

A0.076 A

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.018

0.018

0.018

0.021

0.021

0.021

0.021

0.021

0.025

0.025

0.025

0.025

0.030

0.030

0.030

0.030

0.030

0.030

0.035

0.035

0.035

0.035

0.035

0.035

0.040

0.040

0.040

0.021

0.021

0.021

0.021

0.021

0.021

0.025

0.025

0.025

0.025

0.030

0.030

0.030

0.030

0.030

0.030

0.035

0.035

0.035

0.035

0.035

0.035

0.040

0.040

0.040

0.040

0.040

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Http: //www.csb-bearing.com

Zhejiang Changsheng Sliding Bearing Co.,Ltd.

Add: Economic Development Zone,

Jiashan, Zhejiang, China

Tel: +86-573-4184540,4184307,4185528

Fax: +86-573-4183450,4185526

6 212 Tel 0769-87782005 Fax 0769-87719413

6

314100

Tel: 0573-4183287, 4183761, 4184710

Fax: 0573-4183450, 4185526

CSB/CAT.031

Print: 12 2006/

csb filament wound high load self-lubricating bearings · csb filament wound high load...

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