RUNNING-IN METHOD OF ROLLER BEARING

摘要

PROBLEM TO BE SOLVED: To reduce time for running-in. SOLUTION: In the middle of a gradual start-up process with increasing step-by-step a rotation speed of a main shaft bearing to an operational rotation speed, such a rapid start-up process that the main shaft bearing is operated at a rotation speed faster than the operational rotation speed is provided. COPYRIGHT: (C)2003,JPO