A cylindrical body having a centrally located hole to accommodate a pin or shaft for attachment to a push rod guide, yoke, rocker arm, turntable, or rail. The item provides a rolling contact with the face of a valve stem, or the lobes of a cam ring or camshaft on engines, fuel injection pumps, latches, turntables, parallel bearing surfaces requiring a roller support, and the like. Excludes:bearing, roller, cylindrical; roller, electrical switch; and friction bearings. See also cam follower, needle bearing.
0.020 plus 0.010 in. by 45 deg chamfer chamfer/radius of outside corner, 0.492 inches minimum and 0.494 inches maximum outside diameter, 0.180 inches minimum and 0.190 inches maximum face width, 0.250 inches minimum and 0.251 inches maximum bore inside diameter, not casehardened casehardening indicator