The max PV value of the CSB-EPB5A plastic bearings is 0.25N/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 EPB5A-1).
▊ Load, speed and temperature
CSB-EPB5A allows the Max static load of 90Mpa, The max compressive deformation rate under the max load is listed in Graph EPB5A-2, The actual load capacity of bearing is slightly less than 90Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.6m/s) results into higher temperature (Tmax: 250℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB5A-3 for such variation.
▊ Friction factor, wear and shaft material
▊ Friction factor
CSB-EPB5A Bearing Friction factor is increased along with the increasing of the operation speed under certain loading (See Graph EPB5A-4). The friction factor of CSB-EP5A is decreased along with the loading increasing not over 20Mpa (see Graph EPB5A-5). The friction factor will not change much along with the speed when the loading is over 20Mpa. The Graph EPB5A-6 shows that the bearing could achieve its best performance when the counter shaft surface roughness is around Ra0.4 to Ra0.9.
CSB-EPB5A
Dry
Grease
Oil
Water
Friction coef. μ
0.25~0.40
0.09
0.04
0.04
▊ Wearing and shaft material
Graph EPB5A-7 and Graph EPB5A-8 show the test results of the material CSB-EPB5A running against different shaft materials. It is suitable for hard Aluminum and hard chrome steel shaft. The hard chrome steel shaft will be better when the loading is getting heavier. Graph EPB5A-7 shows CSB-EPB5A is good for oscillation operation.
▊ Chemical resistance
Chemical Resistance of CSB-EPB5A is very good. It can work well in the heavy acid of 65%.
▊ Water absorption
The moisture absorption of CSB-EPB5A plastic plain bearings is 0.3% in standard atmosphere. The max. water absorption is 0.5% in water . These values are very low, CSB-EPB5A plastic palin bearings is very well suited for used in wet applications.
▊ UV resistance
CSB-EPB5A can maintain its performance to be stable even exposed in the UV ray for long period.
▊ Installation tolerances
CSB-EPB5A Tolerances after pressfit
Diameter [mm]
CSB-EPB5A F10 [mm]
Housing 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
>80～120
+0.036～+0.176
0～+0.035
0～-0.087
>120～180
+0.043～+0.203
0～+0.040
0～-0.100
Medium
EPB5A bearings resistance
Alcohol
Resistant
Hydrocarbons
Resistant
Greases. oils
Resistant
Fuels
Resistant
Diluted acids
Resistant
Strong acids
Conditionally resistant
Diluted alkalis
Resistant
Strong alkalis
Resistant
CSB® Bearing Material Chemical Resistance
Please select bearing material and medium...
R - Resistant
CR - Conditionally resistant
NR - Not resistant
ND - No test data
RD - Resistant，but the dimension changed due to moisture absorption
NO - No data
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.
▊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
view tools
DURAPLAS® Semi-finished Products Finder V2.0
▊DURAPLAS® 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. ▊DURAPLAS® 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.
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