Patent ID: 6244408
Filing Date: 2001-06-12
Classification: F16C,F16D

Abstract:
A rotary machine comprising:a rotation member;a bearing installed in an inner periphery of said rotation member to rotatably support said rotation member; and a support member provided at an inner periphery of said bearing to support said bearing, whereinsaid bearing includes an inner race, an outer race, and a plurality of balls provided between said inner race and said outer race,at least one of the inner race and the outer race is held within a member made from a first material having a different coefficient of thermal expansion from the coefficient of thermal expansion of a material comprising the balls,said plurality of balls are arranged in single row,each of said plurality of balls contacts said inner race at two contact points when a force acting radially on said rotary machine is along a radial central line extending through the center of said balls in a radial direction of said bearing, and a gap is provided between each ball and each of the inner and outer races, such that the gap accommodates differences in expansion between the first material and the material comprising the balls,andwhen a force acting radially on said rotary machine is axially diverted from the radial central line, and said outer race inclines, each said ball contacts said inner race at at least one point, and contacts said outer race at at least one point.