... 650*72NF28/560M560*680*72NU28/850850*1030*106Cylindrical roller bearing : Cylindrical roller and groove for line contact ... Single row or double row 9.Material:Chrome steel,stainless steel,bearing steel 10.Vibration noisy lever:Z1,Z2 11.Tolerance ... cylindrical roller bearings,spherical roller bearing,tapered roller bearing,thrust ball bearing,thrust roller bearing,needle bearing,inserted TAI ER QI ...