| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thrust bearing in which a diameter relative difference of rolling elements is an appropriate value, non-repeated run-out is sufficiently reduced, and which can be manufactured relatively inexpensively. <P>SOLUTION: The thrust bearing 1A includes a plurality of rolling elements 4 interposed between respective raceway surfaces 2a, 3a of a pair of raceway rings 2, 3 facing to each other parallel or obliquely in an axial direction. When an elastic deformation amount of a diameter of the rolling element 4 by a thrust load acting on the rolling element 4 at a minimum load is δ<SB POS="POST">0</SB>and a diameter relative difference of the respective rolling elements 4 is ΔDa, a relationship δ<SB POS="POST">0</SB>≥ΔDa is established. For example, when the respective raceway rings 2, 3 and the rolling elements 4 are in line contact with each other, and the thrust load acting on the rolling elements 4 at the minimum load is p<SB POS="POST">0</SB>and a length of the line contact is l, δ<SB POS="POST">0</SB>=0.003p<SB POS="POST">0</SB><SP POS="POST">0.9</SP>/l<SP POS="POST">0.8</SP>≥ΔDa. <P>COPYRIGHT: (C)2013,JPO&INPIT |
