ANEW APPROACH TO LUBRICATING BALL BEARINGS

摘要

At the request of the Burean of naval weapons the naval research laboratory undertook a study of the causes of unsatisfactory service and storage life of navy synchro and servo motors. Silicone oils have been in wide use as the lubricant for the ball bearings of these devices because of the good low-icmperature characteristics of these materials. Examination of bearings from synchro which failed qualification tests at the U.S. Naval ammunition depot, crane, Indiana, gave evidence of fretting corrosion, broken bearing retainers dry residues, and loss of lubricant. A white hocculcnt substance was found in new silicone-lubricated beatings. This substance could be reproduced in the laboratory at room temperature when rubhing ferrous meials were lubricated with silicones.