BEARING FAILURE SIGN DIAGNOSIS DEVICE, BEARING FAILURE SIGN DIAGNOSIS SYSTEM, AND BEARING FAILURE SIGN DIAGNOSIS METHOD

摘要

PROBLEM TO BE SOLVED: To provide a bearing failure sign diagnosis device and the like for appropriately diagnosing the presence/absence of a failure sign of a bearing.;SOLUTION: A bearing failure sign diagnosis device 1 comprises: a first temperature sensor 11a for detecting temperature of a first bearing 74d provided on the side of one end of a shaft member 74c of a motor 74; a second temperature sensor 11b for detecting temperature of a second bearing 74e provided on the side of the other end of the shaft member 74c; and bearing failure sign diagnosis means 12a for diagnosing the presence/absence of a failure sign in the first bearing 74d and the second bearing 74e. The bearing failure sign diagnosis means 12a determines that there is a failure sign in the first bearing 74d or the second bearing 74e when difference between the temperature of the first bearing 74d and the temperature of the second bearing 74e is out of a predetermined range set on the basis of normal states of the first bearing 74d and the second bearing 74e.;COPYRIGHT: (C)2016,JPO&INPIT