摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary bearing capable of restraining abrasion of a cage or a member contacting with the cage, by reducing weight of the cage, without causing fretting, with a constitution for holding a rolling element by the cage. <P>SOLUTION: This rotary bearing has an inner ring 1, an outer ring 2, a plurality of rolling elements 3 freely rolling between respective raceway surfaces 1a, 1b, 2a and 2b of these inner-outer rings 1 and 2, and the cage 4 for holding the respective rolling elements 3. The cage 4 is made of ceramic. The ceramic is constituted of a sintered body containing βsialon as main component and a residual part of an impurity, or a sintered body containing β sialon as main component, a residual part of a sintering aid and an impurity. <P>COPYRIGHT: (C)2010,JPO&INPIT |