| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin-made cage for a roller bearing, the cage that can prevent peeling of a surface of the shaft and rollers caused by entry of foreign materials such as abrasion powder mixed in an oil for lubrication between a shaft and rollers.SOLUTION: A resin-made cage 1 for a roller bearing includes pockets 2 for storing rollers 12 at a plurality of positions in a circumference direction of a cylindrical cage body 1A. An inner pawl 5 and an outer pawl 6 each project inward from an inner radial end and an outer radial end of a surface 4a facing the pocket 2 along a shaft direction. With the inner pawl 5 and the outer pawl 6, the roller 12 in the pocket 2 is prevented from falling to the inner radial side and the outer radial side. By regulating the flow of an oil for lubrication flowing in the pocket 2, the inner pawl 5 and the outer pawl 6 are formed to have shapes, sizes and an arrangement in a manner that the foreign materials mixed in the oil do not enter between the roller 12 and the shaft fitted to the inner periphery of the roller 12. |
