| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a roller bearing equipped with a comb-shaped cage for preventing the occurrence of improper lubrication on an outer peripheral face of a roller. <P>SOLUTION: A plurality of rollers 3 held in the cage 4 are provided between an inner ring 1 and an outer ring 2. The cage 4 has an annular part 5 and a plurality of column parts 6 protruding from a plurality of sections in the peripheral direction of the annular part 5 like comb-teeth to hold each roller 3 in a pocket 7 between adjacent column parts 6. Each of the column parts 6 of the cage 4 includes a column part extended part 6b extended from a tip of a column part body 6a being a part functioning to guide the roller in the column part 6 and holding lubricant. A cross sectional shape of an opposing face 6ba to the roller in the column part extended part 6b is such a cross sectional shape being more separated from an outer peripheral face 3a of the roller than an opposing face 6aa to the roller in the column part body 6a on the whole face. A lubricant holding recessed part 9 for holding lubricant is formed in a part close to a roller arranging pitch circle pcd in the radial direction of the column part extended part 6b. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
