The max PV value of the CSB-EPB9 plastic bearings is 0.35N/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 EPB9-1).
▊ Load, speed and temperature
CSB-EPB9 allows the Max static load of 105Mpa, The max compressive deformation rate under the max load is listed in Graph EPB9-2, The actual load capacity of bearing is slightly less than 105Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.8m/s) results into higher temperature (Tmax: 140℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB9-3 for such variation.
▊ Friction factor, wear and shaft material
▊ Friction factor
Graph EPB9-4 shows that the friction factor of CSB-EPB9 is much higher than those of other materials because the electronic conductive fiber is embedded into the bearing material. It is induced that the friction performance will be better when the bearing is lubricated. Graph EPB9-5 shows that the friction factory is decreasing along with the loading increasing and Graph EPB9-6 shows that the friction factor is increasing along with the shaft roughness increasing when the shaft roughness is between Ra0.1 to Ra0.5. This effecting will be less when the shaft roughness is between Ra0.5 to Ra1.6.
CSB-EPB9
Dry
Grease
Oil
Water
Friction coef. μ
0.10~0.40
0.09
0.04
0.04
▊ Wearing and shaft material
Graph EPB9-7 and EPB9-8 shows the different results of the material against different shaft materials. It induces that the bearing material is good for hard chrome steel shaft under low loading operation condition and good for hardened carbon steel shaft under high loading rotation operation.
▊ Chemical resistance
CSB-EPB9 is good at chemical resistance against weak acidic medium and various kinds of lubricants.
▊ Water absorption
The moisture absorption of CSB-EPB9 plastic plain bearings is 1.3% in standard atmosphere. The max. water absorption is 6.5% in water. The application environment has to be considered due to the high water absorbtion properties.
▊ UV resistance
When CSB-EPB9 is exposed into the UV ray, the material performance stays stable.
▊ Installation tolerances
CSB-EPB9 Tolerances after pressfit
Diameter [mm]
CSB-EPB9 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
Medium
EPB9 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
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.
A self-lubricating material for applications in water. It is suitable for high speed motion under low load. Continuous working temperature: -50℃/+90℃. Suitable for medium load operation...
