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.
0.339 inches nominal face width, ams 5629 assn std single material response material document and classification, 0.2505 inches minimum and 0.2526 inches maximum bore inside diameter, not casehardened casehardening indicator, 0.677 inches minimum and 0.679 inches maximum outside diameter