... : 1) Taper roller bearings (single row, double rows and four rows) 2) Deep groove ball bearings(GCR15 Carbon Z 2Z ... bearing,Silicon nitride ceramic ball bearing,Wheel roller bearing 9)Bearing parts(retainer,steel ball,seal,locking collar,anti- ... according to our customers' requirements! The workshop of FC3246130--Four Rows--Cylindrical Roller Bearing FC3246130--Four Rows--Cylindrical Roller Bearing