... , 626 627,628,629,6000,6200,6300series,with Z,ZZ,RS,2RS,2RZ, Non-standard Bearing 2.Materials: GCR15 FBX-IR inner ... normal working clearace when the inner ring is fitted with the needle bearing without inner ring. FBX- LR tolerance value is bigger ... than IR, the price is cheaper too. It's usually fitted with ...