Part Number (6) Cover Selection L S d D H7 B b 1 b 2 Deep Groove Ball Bearing No. H D 2 T dh E D 1g6 P.C.D. d 1 d 2 H 1 Type Bearing No. Tolerance Tolerance ABGYB (Black Oxide) ABGY (Electroless Nickel Plating) 7002 N Standard Cover S Oil Seal R O-Ring