| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for testing a bearing, capable of reproducing brittle separation caused by hydrogen brittleness, in a short time and with precision. SOLUTION: A test bearing 2 and a dummy bearing 3 are mounted at an interval on a rotary axis 1 driven with a belt, to which a load is applied; each outer ring 2b, 3b of the test bearing 2 and a dummy bearing 3 are fixed on mutually insulated housing 4a, 4b, and the cavity part 9 between the housing 4a, 4b is filled with water; the interval between contact terminals 8a, 8b mounted on each housing 4a, 4b is energized; while making a current to flow between the inner ring 2a of the test bearing 2 and the outer ring 2b through a ball 2c, hydrogen is generated forcibly by electrolysis and the like from grease enclosed in the test bearing 2; and generation of hydrogen is accelerated from water itself supplied into the inner part of the bearing 2 and due to increase in electrolytic corrosion by water, thereby brittle separation caused by hydrogen brittleness can be reproduced, in a short time and with precision. COPYRIGHT: (C)2009,JPO&INPIT
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