● 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
Material properties | Standard | Unit | CSB-EPB6A |
General properties | |||
Color | - | - | White |
Density | ISO1183 | g/cm3 | 1.10 |
Max. moisture absorption, 50%RH | ISO62 | % | 1.5 |
Max. water absorption | ISO62 | % | 7.6 |
Coefficient of sliding friction(steel) | ITS025 | µ | 0.10-0.40 |
Max. PV value | ITS026 | N/mm2×m/s | 0.10 |
Mechanical properties | |||
Flexural modulus | ISO178 | MPa | 1300 |
Flexural strength | ISO178 | MPa | 55 |
Max. static load | ITS027 | MPa | 35 |
Max. dynamic load | ITS028 | MPa | 12 |
Shore hardness | ISO868 | D | 70 |
Physical and thermal properties | |||
Long-term application temperature | ITS029 | ℃ | +80 |
Short-term application temperature | ITS029 | ℃ | +170 |
Lowest application temperature | ITS029 | ℃ | -40 |
Thermal conductivity | ISO22007 | W/m/K | 0.23 |
Coefficient of thermal expansion | ISO11359 | K-1×10-5 | 11 |
Flammability | UL94 | Class | HB |
Electrical properties | |||
Volume resistance | IEC60093 | Ω·cm | >1013 |
Surface resistance | IEC60093 | Ω | >1012 |
*ITS: CSB company's internal test standards. **Test temperatures are 23℃ unless otherwise stated.
The max PV value of the CSB-EPB6A plastic bearings 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).
CSB-EPB6A allows the Max static load of 35Mpa, 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 35Mpa, 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.
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 CSB-EP3M 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 | 0.10~0.40 | 0.09 | 0.04 | 0.04 |
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-7 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.
CSB-EPB6A is good at chemical resistance against weak acidic medium and various kinds of lubricants.
The moisture absorption of CSB-EPB6A plastic plain bearings is 1.5% in standard atmosphere. The max. water absorption is 7.6% in water. The application environment has to be considered due to the high water absorbtion properties.
When CSB-EPB6A is exposed into the UV ray, the material performance stays stable.
CSB-EPB6A Tolerances after pressfit
Diameter [mm] | CSB-EPB6A E10 [mm] | Housing H7 [mm] | Shaft h9 [mm] |
>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 |
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▊CSB-EPB® Plastic Bearings Finder[V2.1] is based on the analysis and calculation of a large number of test data in CSB® laboratory. You can calculations material data by entering parameters such as bearing load, speed, and temperature, and finally output material adaptation data.
▊Because the system calculate and analyze based on lab data, it can't exactly meet the ractual use requirements absolutly. The system data verification has certain limitations; CSB® recommends that the bearing must be tested again to verify whether it meets the actual use requirements.
▊CSB-EPB® Plastic Bearings Finder output data information is only for design reference, and can not be used as the final standard for determining the bearing material conformity, If you have any questions, please contact CSB® sales engineers.
▊CSB-SFP® Semi-finished Products Finder[V2.0] is based on the analysis and calculation of a large number of test data in CSB® laboratory. You can calculations material data by entering parameters such as bearing load, speed, and temperature, and finally output material adaptation data.
▊Because the system calculate and analyze based on lab data, it can't exactly meet the ractual use requirements absolutly. The system data verification has certain limitations; CSB® recommends that the products must be tested again to verify whether it meets the actual use requirements.
▊CSB-SFP® Semi-finished Products Finder output data information is only for design reference, and can not be used as the final standard for determining the bearing material conformity, If you have any questions, please contact CSB® sales engineers.
Medium | EPB6A bearings resistance |
Alcohol | Resistant |
Hydrocarbons | Resistant |
Greases. oils | Resistant |
Fuels | Resistant |
Diluted acids | Conditionally resistant |
Strong acids | Not resistant |
Diluted alkalis | Resistant |
Strong alkalis | Conditionally resistant |
Please select bearing material and medium...
▊CSB® bearing material chemical resistance data is a comparison test result of the CSB chemistry laboratory using laboratory specimens or similar chemicals at room temperature 23 ℃, without considering the impact of other temperatures and chemical medium mixtures on the chemical resistance of CSB® bearing materials ; Therefore, this data can only act as a reference. CSB® recommends that the chemical resistance of actual parts should be tested under application conditions and verify the suitability of the bearings.
Continuous working temperature: -100℃/+250℃. Suitable for high load and lovo speed operation. High load capacity at higher temperature. Good chemical resistance. FDA grade.
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