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.
plain style designator, 0.628 inches minimum and 0.630 inches maximum bore inside diameter, 0.970 inches nominal outside diameter, 1.998 inches minimum and 2.002 inches maximum face width, not casehardened casehardening indicator