Wear-proof tester for retainer in needle cage
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United States of America Patent
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Sep 12, 2017
Grant Date -
Jun 23, 2016
app pub date -
Sep 14, 2015
filing date -
Dec 18, 2014
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Abstract
A wear-proof tester to evaluate an anti-frictional performance of surface treatment carried on a needle cage. The needle cage is subjected to flex under the centrifugal force of composite revolution and rotation. Wear-proof test of surface treatment is carried by sliding contact between the outside circular surface of the retainer and the inside circular surface of the outside wheel. The retainer with no roller is fastened on a rotary shaft with leaving a clearance between them. A radial load is applied to retainer through a test outside wheel to get the retainer flexed to make sliding contact over a predetermined area between the outside circular surface of the retainer and the inside circular surface of the outside wheel. This wear-proof tester is applicable to the wear-proof tests of various materials other than the wear-proof test of the retainer made of various materials.
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