Roller bearing HRS, HRSC series

steelresincorrosion-resistant

CONSTRUCTION RBC stud type airframe track rollers have been designed for specific use on track type or cam-controlled equipment when cantilever mounting is desired. Each non-separable unit comprises an outer ring, a full complement of needle rollers, stud, and washer. The O.D. of the outer ring is chromium plated in accordance with the AMS-QQ-C-320, Class 2 specifications to a minimum thickness of .0004 in. All other exposed surfaces are cadmium or zinc-nickel plated. The sealed track rollers have seals made from a special plastic or acetal resin. Track rollers are available with cylindrical or crowned outer rings. Crowned track rollers reduce the effect of uneven bearing loading resulting from deflection, bending, or misalignment in mounting. A track roller with a cylindrical outer ring is identified by the prefix letters HRS. A track roller with a crowned outer ring has a letter “C” added to the end of the prefix code (i.e., HRSC). Normally, the track rollers are prepackaged with a low temperature aircraft grease meeting MIL-PRF-81322 specification, when specified.