EPB26 Plastic Plain Bearings
EPB26 Plastic Plain Bearings
- Suitable for soft shafts
- Excellent wear resistance
- Operation temperature up to +200℃
- Good resistance to chemicals
- High elasticity
|Material Properties Data Sheet|
|Max. Moisture Absorption, 50%RH||ISO62||%||0.1|
|Max. Water Absorption||ISO62||%||0.2|
|Dynamic Friction Coefficient against Steel||ITS025||μ||0.15~0.20|
|Max. PV Value||ITS026||N/mm² x m/s||0.50|
|Max. Static Load||ITS027||MPa||55|
|Max. Dynamic Load||ITS028||MPa||22|
|Long-term Application Temperature||ITS029||℃||+200|
|Short-term Application Temperature||ITS029||℃||+240|
|Lowest Application Temperature||ITS029||℃||-40|
|Thermal Expansion Coefficient||ISO11359|
K-1 x 10-5
*ITS: Internal test standards of CSB Compnay.
**Test temperature: 23℃ unless otherwise stated.
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).
|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.
|Friction Factor, Wear and Shaft Material|
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.
|Friction Coef. μ||0.15~0.20||0.09||0.04||0.04|
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.
The chemical resistance of CSB-EPB26 is fairly good against most Acid and Alkalis.
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.
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|
Drawing Download Link: EPB26 Drawing
|EPB26 Installation Tolerances|
CSB-EPB26 Tolerances after Pressfit:
|Housing Bore [H7](mm)||Shaft [h9](mm)|
|CSB®EPB26 Standard Products|
EPB3\EPB3G\EPB9\EPB12\EPB16\EPB20\EPB21\EPB22\EPB26 Standard Specification