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.
0.540 inches minimum and 0.550 inches maximum face width, 0.340 inches minimum and 0.342 inches maximum outside diameter, 0.250 inches minimum and 0.252 inches maximum bore inside diameter, not casehardened casehardening indicator, ams 5659 assn std single material response material document and classification