The max PV value of the CSB-EPB26 plastic bearings is 0.5N/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 EPB26-1).
▊ Load, speed and temperature
CSB-EPB26 allows the Max static load of 55Mpa, The max compressive deformation rate under the max load is listed in Graph EPB26-1, The actual load capacity of bearing is slightly less than 55Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.9m/s) results into higher temperature (Tmax: 200℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB26-3 for such variation.
▊ Friction factor, wear and shaft material
▊ Friction factor
Graph EPB26-4 shows the friction factor of CSB-EPB26 is not obviously effected by the operation speed when the loading is stable and Graph EPB26-5 shows it will be decreasing along with the loading is increased from 0 to 45 Mpa when the operation speed is unchanged. The friction factor of CSB-EPB26 is increased along with the increasing of the shaft roughness. The recommended shaft roughness is Ra0.1 to Ra0.6.
CSB-EPB26
Dry
Grease
Oil
Water
Friction coef. μ
0.15~0.20
0.09
0.04
0.04
▊ Wearing and shaft material
Graph EPB26-7 and Graph EPB26-8 tells that the CSB-EPB26 is very good for Hardened shaft and soft shaft and it features excellent both on hardened steel shaft and stainless steel shaft but the hardened aluminum shaft is not good for CSB-EPB26 bearings. The wear of CSB-EPB26 is better on rotation operation than on oscillation operation.
▊ Chemical resistance
The Chemical Resistance of CSB-EPB26 is fairly good against most of Acid and Alkalis.
▊ Water absorption
The moisture absorption of CSB-EPB26 plastic plain bearings is 0.1% in standard atmosphere. The max. water absorption is 0.2% in water . These values are very low, CSB-EPB26 plastic palin bearings is very well suited for used in wet applications.
▊ UV resistance
Disintegration could be possible for the material CSB-EPB26 after long period of exposing under the UV ray and therefore the compressive strength will be reduced.
▊ Installation tolerances
CSB-EPB26 Tolerances after pressfit
Diameter [mm]
CSB-EPB26 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
EPB26 bearings resistance
Alcohol
Resistant
Hydrocarbons
Resistant
Greases. oils
Resistant
Fuels
Resistant
Diluted acids
Conditionally 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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