The basic design of these products is essentially that of a conventional rolling bearing, except that they have a thick-walled outer ring. Stud type track rollers have a shaft stud at one end. In the majority of applications, the outer ring is subjected to circumferential load, i.e. the outer ring rotates while the inner ring or stud remains stationary. The thick walled outer ring prevents excessive deformation of the track roller and ensures that the rolling element set is uniformly loaded Specifications Roller diameter: 1.2500 in Bore diameter: 0.3750 in Roller width: 0.7500 in Roller shape: Flat Bearing element: Needle Rollers Overall width: 0.8125 in Closure type: Sealed Radial static load capacity: 7700 lbs Roller material: Chrome Steel Maximum rpm: 3100 rpm Lubrication hole location: Inner Ring Finish/coating: Black Oxide Series: Inch CAMROL (CYR)