| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a roller bearing satisfying both of securing excellent lubricating performance and reduction of the manufacturing cost. <P>SOLUTION: The roller bearing 1 includes an outer ring 2 having a raceway 22 in an inner diameter part, a plurality of rollers 3 disposed in the raceway 22, and a holder 4 holding the rollers 3. The outer ring 2 includes a cylindrical part 21 formed of the raceway 22 at the inner diameter part of an axial center direction and a folding part 23 folded from both ends of the cylindrical part 21 toward an end face of the roller 3, the holder 4 includes a lug 41 extended to the axial direction outside with an outer diameter face abutting on an inner diameter face 24 of the folding part 23, has a large inner diameter face 25 increased in the diameter to the outside in the diameter direction at the axial direction outside inner diameter part of the folding part 23, and composes a flow-in space A of lubricant between the large inner diameter face 25 and an outer diameter face 44 of the lug 41. <P>COPYRIGHT: (C)2013,JPO&INPIT |
