| 摘要 |
A frequency discrimination type torque tester which breaks down a torque acting between outer and inner races of a bearing into a spiky change component and an undulated change component. Output from a load cell is classified by frequency bands and the quality of the bearing can be evaluated by dividing the output into a torque chart recording only undulated changes based on deviation from roundness or rotational deflection, and which are gentle with the lapse of time, and a torque chart recording only spiky changes based on finishing accuracy of the race surface of the bearing or on a dent or dust included in the bearing, and which are of short duration.
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