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PV Value of Bearings

The max PV value of the CSB-EPB2 series bearing 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 EPB2-1).

The Relation of Load, Speed and Temperature

CSB-EPB2 allows the Max static load of 60Mpa, The max compressive deformation rate under the max load is listed in Graph EPB2-2, The actual load capacity of bearing is slightly less than 60Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax:1.0m/s) results into higher temperature (Tmax: 100℃)which decreases the load capacity of the bearing. Please refer to the Graph EPB2-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
Similar with most of the plastic bearings, the friction factor of CSB-EPB2 is increased along with the operation speed when the loading is stable (see Graph EPB2-4) and is decreased along with the loading increasing when the operation speed is stable (see Graph EPB2-5). From Graph EPB2-6, it shows the friction factor of CSB-EPB2 is variable against different shaft surface roughness. The recommended shaft surface roughness is Ra0.3~0.6.

CSB-EPB2
Dry
Grease
Oil
Water
Friction coef.μ
0.07~0.20
0.09
0.04
0.04


Wearing and shaft material

Graph EPB2-7 shows that CSB-EPB2 is rather suitable for hardened steel shaft and hardened chrome steel shaft under lower loading andGraph EPB2-7 shows that CSBEPB2 wearing feature is better for oscillation operation than of rotation operation.

Chemical Resistance

CSB-EPB2 is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB2 is 0.2% under the atmospheric pressure while it is 0.4% when the material is immerged into water. With its low water absorbability, the material is suitable for humid environment applications.

UV Resistance

Disintegration could be possible for the material CSBEPB2 after long period of exposing under the UV ray and therefore the performance of the material will be reduced.

Bearing Installation

CSB-EPB2 The Interfit Tolerance

Diameter mm
Tolerance after fit E10
Fit Housing H7
Fit Shaft h9
>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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