| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent generation of edge load even if misalignment occurs in a contact part of a rolling body of a rolling bearing having a contact part of linear contact and a bearing ring and provide a crowning curve having long fatigue life. <P>SOLUTION: In this roller bearing having a roller in which a ratio for roller diameter D of contact length 1 excepting chamfering width from the whole roller length, 1/D, becomes substantially 1.5 or less, at least one of an inner ring bearing ring, an outer ring bearing ring, and a roller rolling face has crowning, and a shape of crowning is obtained as 1.4≤K<SB>1</SB>≤1.7, -20≤K<SB>2</SB>≤-10 based on the expression (1). In the case of the roller bearing used under misalignment, shape of crowning is obtained based on the expression (1) by obtaining the maximum drop amount z<SB>m</SB>at which edge load does not occur when K<SB>1</SB>=1.4 and K<SB>2</SB>=-10 and setting crowning length x to the maximum crowning length x<SB>m</SB>obtained from the expression (2) or less. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
