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PV Value of Bearings

The max PV value of the CSB-EPB17 series bearing is 0.7N/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 EPB17-1).

The Relation of Load, Speed and Temperature

CSB-EPB17 allows the Max static load of 20Mpa, The max compressive deformation rate under the max load is listed in Graph EPB17-2, The actual load capacity of bearing is slightly less than 20Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 3.0m/s) results into higher temperature (Tmax:260℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB17-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
A rapid decrease in friction can be observed as load increases for CSB-EPB17 bearings. A higher surface speed has less impact on the coefficient of friction of this bearing.(EPB17-4 and EPB17-5) CSB-EPB17 is suitable for applications in which high pv values are given mainly through the high surface speed and not as much through the surface pressure. From the figure EPB17-6, we could see that the friction factor is variable against the changing of shaft roughness. The recommended shaft roughness is Ra0.3~0.5.

CSB-EPB17
Dry
Grease
Oil
Water
Friction coef. μ
0.15~0.30
0.09
0.04
0.04


Wearing and shaft material

CSB-EPB17 is suitable for almost all kinds of shaft materials. Graph EPB17-7 shows that the wearing feature of CSB-EPB17 is excellent when the shaft material are stainless steel、hardened Aluminum or hardened chrome steel. Graph EPB17-7 shows that the material CSBEPB17 is most suitable for the rotation operation. Since start-up friction is extremely low, this makes CSB-EPB17 bearings the ideal choice for oscillating or start-stop applications

Chemical Resistance

CSB-EPB17 is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB17 is less than 0.1% under the atmospheric pressure while it is less than 0.1% when the material is immerged into water. The material performance and dimensions of the material is stabilized for the applications under humid environment or even in the water.

UV Resistance

CSB-EPB17 can maintain its performance to be stable even exposed in the UV ray for long period.

Bearing Installation

CSB-EPB17 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

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