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.
not casehardened casehardening indicator, 0.512 inches minimum and 0.516 inches maximum bore inside diameter, feed rod,loader assy,gun,automatic,40 mm,m1,m1a1,m2,m2a1 fsc application data, 0.577 inches minimum and 0.597 inches maximum hub diameter, 0.432 inches minimum and 0.440 inches maximum bore length