EPB11 Plastic Plain Bearings

EPB11 Plastic Plain Bearings
Product Details

EPB6A Plastic Plain Bearings

It is a PTFE and Silicon free material widely used in the food and packing machineries.

Continuous working temperature: -40?~80?;

No special requirement on the surface roughness;

Low friction coefficient;

Applicable for flexible shaft;

FDA grade.

The Material Data Sheet

Typical Item

Standard

Unit

CSB-EPB6A

   Density

ISO1183

g/cm³

1.14

   Color



White

   Dynamic friction /steel(dry)



0.10-.040

   Max. PV (dry)


N/mm²×m/s

0.1

   Max. roatating velocity


m/s

0.6

   Max. oscillating velocity


m/s

0.4

   Max. linear velocity


m/s

1.0

   Tensile strength

ISO527

MPa

83

   Compressive strength (Axial)


MPa

50

   E-module

ISO527

MPa

2800

   Max. static pressure of the surface, 20?


MPa

20

  Shore hardness

ISO868

D

76

   Continuous work temperature


-40/80

   Short-time work temperature


-40/170

   Thermal conductivity

ASTME1461

W/m×k

0.2

   Linear coef. of thermal expansion

ASTMD696

K-1×10-5

10

   Moisture absorption RH50/23?

ASTMD570

%

1.5

   Max. water absorption, 23?
%7.6

   Flammability

UL94


HB

   Volume resistivity

IEC60093

Ocm

>1012

   Surface resistivity

IEC60093

O

>1015

PV Value of Bearings

The max PV value of the CSB-EPB6A series bearing is 0.1N/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 EPB6A-1).

The Relation of Load, Speed and Temperature

CSB-EPB6A allows the Max static load of 20Mpa, The max compressive deformation rate under the max load is listed in Graph EPB6A-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: 0.6m/s) results into higher temperature (Tmax: 80?) which decreases the load capacity of the bearing. Please refer to the Graph EPB6A-3 for such variation.


The Friction Factor,Wearing and shaft material

Friction Factor
 CSB-EPB6A Bearing Friction factor is increased along with the increasing of the operation speed under certain loading (See Graph EPB6A-4). The friction factor of CSBEP3M is decreased along with the loading increasing not over 10Mpa (see Graph EPB6A-5). The friction factor will not change much along with the speed when the loading is over 10Mpa. The Graph EPB6A-6 shows that the bearing could achieve its best performance when the counter shaft surface roughness is around Ra0.3 to Ra0.6.

CSB-EPB6A
Dry
Grease
Oil
Water
Friction coef. µ
0.05~0.18
0.09
0.04
0.04


Wearing and shaft material

Graph EPB6A-7 and Graph EPB6A-8 show the test results of the material CSB-EPB6A running against different shaft materials. The test result induces that the wearing is considerably affected by the different shaft materials. It is recommended to use hard chrome steel shaft for this material. Graph EPB6A-8 shows CSB-EPB6A is commonly suitable for oscillation operation but it features well for the rotation operation when the shaft material is hard chrome and it is good for oscillation operation when the shaft material is carbon steel steel.

Chemical Resistance

CSB-EPB6A is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB6A is 1.5% 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

When CSB-EPB6A is exposed into the UV ray, the material performance stays stable.

Bearing Installation

CSB-EPB6A 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 epb11 plastic plain bearings manufacturers and suppliers, and also a professional epb11 plastic plain bearings factory and company, we are always at your services.

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