... ABEC-1), P6(ABEC-3), P5(ABEC-5), P4(ABEC-7), P2(ABEC-9)VibrationZ1V1, Z2V2, Z3V3CageStamping steel or brass solid ... , 30300, 32200, 32300, 33000, etc. Ring MaterialChrome Steel, Carbon steel, Stainless steel Tolerance gradeGB/T307.1-205 ID Size 10mm~280mm ... roller bearing, Four-row taper roller bearing, auto bearing, Machine-tool bearing, Construction bearing ,Heavy-duty bearing ,tapered roller bearing ...