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Bearing rotation problem

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Nashanas

Petroleum
Apr 23, 2021
54
Hello everyone,

Is it possible that a bearing rotates 90 degrees anticlockwise, and then when rotated back 90° clockwise it does without any problem. But when it is rotated further in the clockwise direction by 10° it resists the motion as if it has some mechanical defect inside?

If there is any defect in the ball race or one or more balls are defected, it should show a symmetric behaviour because of pure rolling and whether you move it clockwise or anti-clockwise there should be the effect of mechanical resistance?

 
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Balls roll half the distance the race travels.

So make a full turn and note where the defect can be felt. Make another full turn in the same direction. If first time around the defect was felt at 12 o'clock, and second time was at 6 o'clock, then it's likely a defect in the interface between one of the ball and some part of the race.
 
Ball bearings have rolling contact with the races but there is sliding contact with the ball retainers. Sometimes this sliding friction can be felt.
 
Is the shaft still mounted in the bearing? How many bearings are supporting the shaft, if so? Was there a crash of some sort - did the shaft get bent?
 
You may have a "clutch bearing". If so, it's not a defect, it's the normal design.
It's a variety of bearing that allows rotation in only one direction.
Some types look identical to standard ball-bearings.

Some examples:
 
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