Roller bearing NBF, NBL

needlecorrosion-resistantfor heavy loads

CONSTRUCTION This is a non-separable unit, comprising an inner ring, needle rollers, retaining washers and outer ring made extra-thick to better withstand rolling loads. The end washers are fastened to the inner ring. Type NBF has a single row of rollers, and type NBL has two rows of rollers. Lubrication grooves and holes are provided for relubrication in the inner ring only, since the outer ring must serve as a roller. For protection from corrosion under the heavy rolling loads, the O.D. of the bearing is chrome plated. Other exposed surfaces, as mounted, are cadmium plated,or zinc-nickel plated