EPB3M Plastic Plain Bearings

EPB3M Plastic Plain Bearings
Product Details

EPB3M Plastic Plain Bearings

Best for middle to high load applications. With the perfect combination of reinforced fibre and good lubrication feature, this material is suitbale to be used under the temperature of 130?.

Continuous working temperature: -40?~130?;

Suitable for medium and high load operation;

Maintenance-free dry operation;

Applicable for various shaft materials;

Good for rotation and oscillating operation;

Excellent dust resistance.

The Material Data Sheet


Typical Item

Standard

Unit

CSB-EPB3M

   Density

ISO1183

g/cm³

1.15

   Color

Dark Grey

   Dynamic friction /steel(dry)

0.09-0.30

   Max. PV (dry)

N/mm²×m/s

0.2

   Max. roatating velocity

m/s

0.8

   Max. oscillating velocity

m/s

0.6

   Max. linear velocity

m/s

2.5

   Tensile strength

ISO527

MPa

110

   Compressive strength (Axial)

MPa

50

   E-module

ISO527

MPa

2500

   Max. static pressure of the surface, 20?

MPa

20

  Shore hardness

ISO868

D

79

   Continuous work temperature

?

-40/80

   Short-time work temperature

?

-40/170

   Thermal conductivity

ASTME1461

W/m×k

0.25

   Linear coef. of thermal expansion

ASTMD696

K-1×10-5

10

   Moisture absorption RH50/23?

ASTMD570

%

1.4

   Max. water absorption, 23? % 7.6

   Flammability

UL94

HB

   Volume resistivity

IEC60093

Ocm

>1012

   Surface resistivity

IEC60093

O

>1011


PV Value of Bearings

The max PV value of the CSB-EPB3M series bearing is 0.2N/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 EPB3M-1).

The Relation of Load, Speed and Temperature

CSB-EPB3M allows the Max static load of 20Mpa, The max compressive deformation rate under the max load is listed in Graph EPB3M-2, The actual load capacity of bearing is slightly less than 20Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.8m/s) results into higher temperature (Tmax:80?) which decreases the load capacity of the bearing.Please refer to the Graph EPB3M-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor

CSB-EPB3M Bearing Friction factor is increased along with the increasing of the operation speed (See Graph EPB3M-4) therefore it is suitable for the application under low speed operation. The friction factor of CSB-EP3M is decreased along with the loading increasing (see Graph EPB3M-5). The friction factor and wearing of the bearing is considerably affected by the counter shaft roughness. The Graph EPB3M-6 shows that the bearing could achieve its best performance when the counter shaft surface roughness is around Ra0.6.


CSB-EPB3M
Dry
Grease
Oil
Water
Friction coef. µ
0.10~0.30
0.09
0.04
0.04


Wearing and shaft material

Test of the bearing against various shaft materials shows that the material CSB-EPB3M features the wearing performance of the material is not sensitive with different materials where the loading is over 2Mpa. (See Graph EPB3M-7). The bearing performance remains the best when the loading is in the lower range. When the loading is increased, the wearing will be sharply increased. From the Graph EPB3M-8, the CSB-EPB3M material is better for the application with the counter shaft material of hard chrome steel. Graph EPB3M-8 shows that the material is better for rotation operation than oscillation operation.

Chemical Resistance

CSB-EPB3M is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB3M is 1.4% under the atmospheric pressure while it is 7.6% when the material is immerged into water. The application environment has to be considered because of its water absorb properties.

UV Resistance

CSB-EPB3M can maintain its color unchanged when it is exposed into the UV ray. The material performance stays stable.

Bearing Installation

CSB-EPB3M The Interfit Tolerance

Diameter mm

Tolerance after fit E10

Fit Housing H7

Fit Housing 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 epb3m plastic plain bearings manufacturers and suppliers, and also a professional epb3m plastic plain bearings factory and company, we are always at your services.

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