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.
0.324 inches minimum and 0.332 inches maximum face width, 0.433 inches minimum and 0.434 inches maximum outside diameter, 0.343 inches minimum and 0.344 inches maximum bore inside diameter, not casehardened casehardening indicator, qq-s-763, class 440c, cond a fed spec single material response material document and classification