BEARING FOR MAIN SPINDLE UNIT OF MACHINE TOOL, MAIN SPINDLE UNIT OF MACHINE TOOL, AND MACHINE TOOL

摘要

PROBLEM TO BE SOLVED: To provide a bearing for a main spindle unit of a machine tool, which enables a temperature measurement with high response and ensures seizure prevention, and also to provide a main spindle of a machine tool, and a machine tool.;SOLUTION: In a main spindle unit 20 of a machine tool rotatably supporting a rotating shaft 22 to which a tool can be attached to an outer case 29, a front side bearing 60 has a temperature sensor 52 arranged near a contact point p of an outer race 61 and a ball 63.;COPYRIGHT: (C)2014,JPO&INPIT