EPB26 Plastic Plain Bearings

EPB26 Plastic Plain Bearings
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Product Details


EPB26 Plastic Plain Bearings

 

EPB26-0



Product Features


-  Suitable for soft shafts

-  Excellent wear resistance

-  Operation temperature up to +200

-  Good resistance to chemicals

-  High elasticity

 


Material Properties Data Sheet 


Material PropertiesStandardUnitCSB-EPB26
Colour--Beige
DensityISO1183g/cm³1.51
Max. Moisture Absorption, 50%RHISO62%0.1
Max. Water AbsorptionISO62%0.2
Dynamic Friction Coefficient against Steel ITS025μ0.15~0.20
Max. PV ValueITS026N/mm² x m/s 0.50
Flexural ModulusISO178MPa4500
Flexural Strength ISO178MPa95
Max. Static LoadITS027MPa55
Max. Dynamic LoadITS028MPa22
Shore HardnessISO868D74
Long-term Application TemperatureITS029 +200
Short-term Application TemperatureITS029+240
Lowest Application TemperatureITS029-40
 Thermal ConductivityISO22007W/m/K0.24
 Thermal Expansion Coefficient ISO11359

K-1 x 10-5

3
FlammabilityUL94ClassV0
Volume ResistanceIEC60093 Ω·cm >1012
Surface ResistanceIEC60093Ω>1012

*ITS: Internal test standards of CSB Compnay.

**Test temperature: 23 unless otherwise stated.



PV Value


The Max. PV value of the CSB-EPB26 engineer plastic bearings is 0.5N/mm² x 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 EPB26-1).

EPB26

Graph EPB26-1




Load, Speed and Temperature



The allowed Max. static load of CSB-EPB26 is 55Mpa. The maximum compressive deformation rate under 55Mpa is listed in Graph EPB26-2. The actual load capacity is slightly less than 55Mpa. The load is variable against the speed and temperature. High speed causes higher temperature; Vmax. is0.9m/s, while Tmax. is 200℃. Higher temperature will decrease the load capacity of the bearing. Please refer to the Graph EPB26-3 for such variation.

EPB26-2Graph EPB26-2


EPB26-3Graph EPB26-3



Friction Factor, Wear and Shaft Material

 


Friction Factor


EPB26-4.png

Graph EPB26-4

Graph EPB26-4 shows the friction factor of CSB-EPB26 is not obviously effected by the operation speed when the loading is stable.


EPB26-5.png

Graph EPB26-5

Graph EPB26-5 shows the friction of CSB-EPB26 will be decreasing along with the load increased from 0 to 45 Mpa at a certian speed.

 EPB26-6

 

Graph EPB26-6

We can tell from Graph EPB26-6 that the friction factor of CSB-EPB26 is increasing along with the increase of the shaft roughness. The recommended shaft roughness is Ra0.1 to 0.6um.

 

 

Coefficient of Friction


CSB-EPB26DryGreaseOilWater
Friction Coef. μ0.15~0.200.090.040.04


Wearing and Shaft Material

 

Graph EPB26-7 and Graph EPB26-8 tells that the CSB-EPB26 is very good for both hardened shaft and soft shaft. It is a excellent solution for both hardened steel shaft and stainless steel shaft. Only the hardened aluminum shaft is not a good choice. The wear resistant of CSB-EPB26 is better on rotation operation than on oscillation operation.

EPB26-7.png

Graph EPB26-7


EPB26-8.png

Graph EPB26-8



Material Features


Chemical Resistance

 

The chemical resistance of CSB-EPB26 is fairly good against most Acid and Alkalis.

 


Water Absorption


EPB26-9

 

The moisture absorption of CSB-EPB26 plastic plain bearings is 0.1% in standard atmosphere while the Max. water absorption is 0.2% in water. These values are very low so that CSB-EPB26 plastic palin bearings is very suitable for application in wet environments.

 

 

 

 

 

 

 



UV Resistance

 

Disintegration can be possible for the material CSB-EPB26 after a long period exposed to the UV ray and its compressive strength  will be reduced.

 

 

Drawing for Reference


D01.jpg

Sleeve Bearing


D02.jpg

Flange Bearing


D03.jpg

Thrust Washer


Drawing Download Link: EPB26 Drawing



EPB26 Installation Tolerances


CSB-EPB26 Tolerances after Pressfit:

Diameter(mm)

CSB-EPB26 [E10](mm)

Housing Bore [H7](mm)Shaft [h9](mm)

>0~3

+0.006~+0.046

0~+0.010

0~-0.025

>3~6

+0.010~+0.058

0~+0.012

0~-0.030

>6~10

+0.013~+0.071

0~+0.015

0~-0.036

>10~18

+0.016~+0.086

0~+0.018

0~-0.043

>18~30

+0.020~+0.104

0~+0.021

0~-0.052

>30~50

+0.025~+0.125

0~+0.025

0~-0.062

>50~80

+0.030~+0.150

0~+0.030

0~-0.074

 



CSB®EPB26 Standard  Products


EPB3\EPB3G\EPB9\EPB12\EPB16\EPB20\EPB21\EPB22\EPB26 Standard Specification

EPB3EPB3GEPB9EPB12EPB16EPB20EPB21EPB22EPB26 (1)




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