3.5 Example

A shaft of 1/2" in diameter is supported by two plastic bearings. The force equals 10 lbs. The bearing length is 3/4". The shaft rotates at 750 rpm.

From the tables showing the maximum PV values the proper material can be chosen. If the computed value exceeds the value in the table for the chosen material, the dimensions of the shaft and of the bearing should be changed.

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