Summary Information (click on this NSN number for detailed information: 3120-00-001-1838)
Linear-rotary Motion Roller, also referenced with federal logistics item name code 28215:
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.