Roller bearing NBE, NBK series

needleradialspherical

CONSTRUCTION This is a non-separable, self-aligning unit comprising an inner ring, needle rollers, outer ring with spherical O.D., retaining washers and housing ring with spherical I.D. The end washers are fastened to the inner ring. Type NBE has a single row of rollers, and type NBK has two rows of rollers. Lubrication grooves and holes in the inner ring, outer ring and housing ring are provided in the type NBK bearing. The type NBE bearing is similarly designed, except groove and holes in the inner ring are omitted. The self-aligning bearing outer ring and its housing ring are a matched assembly that must be kept together. External surfaces, except the inner ring bore, are cadmium or zinc-nickel plated. DIMENSIONS Dimensions listed are for the finished bearing after plating. Bearings are made to ISO and U.S. Military Specifications, and are constructed to have low radial clearance when mounted to minimize vibration and backlash. The shaft diameter and housing bore dimensions necessary to mount these bearings properly are listed on the facing page.