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Zhejiang CSB Plastic Bearing
Technology Co.,Ltd

Address: No.6, Fenhu Road, Huimin Sub-district, Jiashan, 
Zhejiang, China

Tel: +86-573-84185528

E-mail: oversea@csb-ep.com

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Plastic Bearings

EPB20 Plastic Plain Bearings

EPB20 Plastic Plain Bearings

EPB20 Plastic Plain Bearings A self-lubricating material for applications in water. It is suitable for high speed motion under low load. Continuous working temperature: -50?~90?; Suitable for medium load operation; For underwater operation; For high speed movement; The Material Data Sheet PV...

EPB20 Plastic Plain Bearings

A self-lubricating material for applications in water. It is suitable for high speed motion under low load.

Continuous working temperature: -50?~90?;

Suitable for medium load operation;

For underwater operation;

For high speed movement;

The Material Data Sheet

Typical Item

Standard

Unit

CSB-EPB20

   Density

ISO1183

g/cm³

1.52

   Color



Black

   Dynamic friction /steel(dry)



0.15-0.35

   Max. PV (dry)


N/mm²×m/s

0.15

   Max. roatating velocity


m/s

0.50

   Max. oscillating velocity


m/s

0.40

   Max. linear velocity


m/s

2.00

   Tensile strength

ISO527

MPa

90

   Compressive strength (Axial)


MPa

70

   E-module

ISO527

MPa

9500

   Max. static pressure of the surface, 20?


MPa

40

  Shore hardness

ISO868

D

78

   Continuous work temperature


-50/90

   Short-time work temperature


-50/110

   Thermal conductivity

ASTME1461

W/m×k

0.6

   Linear coef. of thermal expansion

ASTMD696

K-1×10-5

6

   Moisture absorption RH50/23?

ASTMD570

%

0.2

   Max. water absorption, 23?
%0.8

   Flammability

UL94


HB

   Volume resistivity

IEC60093

Ocm

>105

   Surface resistivity

IEC60093

O

>105

PV Value of Bearings

The max PV value of the CSB-EPB20 series bearing is 0.15N/mm2*m/s which determines the load capacity of bearing is inversely proportional to the speed. Please refer to the chart for more detailed information (Graph EPB20-1).

The Relation of Load, Speed and Temperature

CSB-EPB20 allows the Max static load of 40Mpa, The max compressive deformation rate under the max load is listed in Graph EPB20-2, The actual load capacity of bearing is slightly less than 40Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.5m/s) results into higher temperature (Tmax: 90?) which decreases the load capacity of the bearing. Please refer to the Graph EPB20-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
 Similar with most of the plastic bearings, the friction factor of CSB-EPB20 is increased along with the operation speed when the loading is stable (see Graph EPB20-4) and is decreased along with the loading increasing when the operation speed is stable (see Graph EPB20-5). From Graph EPB20-6, it shows the friction factor of CSB-EPB20 is variable against different shaft surface roughness. The recommended shaft surface roughness is Ra0.3~0.6.

CSB-EPB20
Dry
Grease
Oil
Water
Friction coef. µ
0.07~0.20
0.09
0.04
0.04


Wearing and shaft material

Graph EPB20-7 shows that CSB-EPB20 is rather suitable for hardened steel shaft and hardened chrome steel shaft under lower loading andGraph EPB20-7 shows that CSBEPB20 wearing feature is better for oscillation operation than of rotation operation.

Chemical Resistance

CSB-EPB20 is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB20 is 0.2% under the atmospheric pressure while it is 0.4% when the material is immerged into water. With its low water absorbability, the material is suitable for humid environment applications.

UV Resistance

Disintegration could be possible for the material CSBEPB20 after long period of exposing under the UV ray and therefore the performance of the material will be reduced.

Bearing Installation

CSB-EPB20 The Interfit Tolerance

Diameter mm

Tolerance after fit E10

Fit Housing H7

Fit Shaft h9

>0~3

+0.014~+0.054

0~+0.010

0~-0.025

>3~6

+0.020~+0.068

0~+0.012

0~-0.030

>6~10

+0.025~+0.083

0~+0.015

0~-0.036

>10~18

+0.032~+0.102

0~+0.018

0~-0.043

>18~30

+0.040~+0.124

0~+0.021

0~-0.052

>30~50

+0.050~+0.150

0~+0.025

0~-0.062

>50~80

+0.060~+0.180

0~+0.030

0~-0.074

>80~120

+0.072~+0.212

0~+0.035

0~-0.087

>120~180

+0.085~+0.245

0~+0.040

0~-0.100

CSB Plastic is one of the leading China epb20 plastic plain bearings manufacturers and suppliers, and also a professional epb20 plastic plain bearings factory and company, we are always at your services.

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Zhejiang CSB Plastic Bearing Technology Co.,Ltd