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PV Value of Bearings

The max PV value of the CSB-EPB17A series bearing is 0.3N/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 EPB17A-1).

The Relation of Load, Speed and Temperature

CSB-EPB17A allows the Max static load of 8Mpa, The max compressive deformation rate under the max load is listed in Graph EPB17A-2, The actual load capacity of bearing is slightly less than 8Mpa, 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 EPB17A-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
Graph EPB17A-4 shows that the friction factor of CSBEPB17A is initially increased along with the operation speed increasing when the loading is stable but when the speed reaches over 0.25m/s, it is decreased along with the operation speed increasing. Graph EPB17A-5 shows that the friction factor of CSB-EPB17A is decreasing along with the loading increasing when the operation speed is stable. The best shaft roughness for this material is Ra0.4~0.6(Graph EPB17A-6).

CSB-EPB17A
Dry
Grease
Oil
Water
Friction coef. μ
0.10~0.20
0.09
0.04
0.04


Wearing and shaft material

Graph EPB17A-7 shows that the wearing speed of CSBEPB17A is similar with most of the other materials under lower loading but it will be much better when the loading is higher. It also tells that the hardened steel, hardened chrome steel or stainless steel shaft is good for CSBEPB17A bearings. Graph EPB17A-7 shows the wearing rate is less in oscillation operation than in rotation operation.

Chemical Resistance

CSB-EPB17A is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB17A 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-EPB17A can maintain its performance to be stable even exposed in the UV ray for long period.

Bearing Installation

CSB-EPB17A 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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