Self aligning wheel bearing 1.Precision: p0,p6,p5,p4,p2 2.Rich stock ... diameter230-1540mmPrecision GradeP0(ABEC-1), P6(ABEC-3), P5(ABEC-5), P4(ABEC-7), P2(ABEC-9)VibrationZ1V1, Z2V2, Z3V3CageStamping steel ... roller bearings, linear bearing, self-aligning ball bearings, self-aligning roller bearings, thrust ball bearings, thrust roller bearings Self aligning ball bearing wheel bearing