As a professional Taper Roller Bearings 30312 30310 manufacturer, we are strong strength and complete management. UMZ bearing Application : Material:chrome steel(GCr15),carbon steel(GCr11) Steel Type:open,Z,ZZ,RS,2RS,2RZ Accurancy lever:ABEC-1,ABEC-3,ABEC-5 Vibration level codes:V1,V2,V3 Clearance:C2,C0,C3,C4,C5
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