MB1Single-Piece Solid Brass Cage, Guided On Central Rib. H40DA (To DC)=Spherical Roller Bearing With Lubricating Groove And Lubricating Holes In The Outer Ring; Countersunk Lubricating Hole; H40DA Replaces Z34; H40DB Corresponding To Stamford Code Number C47331; H40DC Corresponding To Torrington Specifications W25