Roller bearing

Abstract

A roller bearing for rotatably supporting a rotating shaft of an internal combustion engine between a main body and a cap of the internal combustion engine. The roller bearing including: a plurality of rollers; a retainer which is circumferentially splittable and supports the plurality of rollers; and an outer race which is circumferentially splittable and forms a raceway surface for the plurality of rollers. The retainer is split into a plurality of retaining members. The outer race is split into a plurality of race plates. At least one of the race plates is provided with one of a projection and a cavity to be engaged with one of the main body and the cap to restrict a relative movement between the one of the race plates and the one of the cylinder head and the cap.

1 . A method of manufacturing a race plate in a roller bearing for an internal combustion engine, wherein the roller bearing includes a plurality of rollers, a retainer supports the rollers, and an outer race which is circumferentially splittable into a plurality of race plates for forming a raceway surface for the rollers, the method comprising:
 stamping out a plate material;   rolling the plate material;   subjecting the plate material to heat treatment; and   subjecting the plate material to barreling.   
   
   
       2 . The method of manufacturing the race plate in the roller bearing for the internal combustion engine asset forth in  claim 1 , wherein
 the stamping comprises stamping out two pieces of plate material such that at least one end of the first piece of plate material is formed in such a shape as to be complementary to an end of the second piece of the plate material.   
   
   
       3 . The method of manufacturing the race plate in the roller bearing for the internal combustion engine as set forth in  claim 1 , further comprising:
 surface pressing at least one end side of the stamped-out plate material after stamping out the plate material and before rolling the plate material.   
   
   
       4 . The method of manufacturing the race plate in the roller bearing for the internal combustion engine as set forth in  claim 1 , wherein
 the stamping is performed so as to form a pair of projections or recesses on the plate material.   
   
   
       5 . The method of manufacturing the race plate in the roller bearing for the internal combustion engine as set forth in  claim 1 , wherein
 the rolling is performed such that a shear plane occurring at the time of stamping is located on a raceway surface side for the rollers.