... ball bearings,self-aligning ball bearings.with less coefficient of friction, high limiting speed, large size range and various structure ... NRTolerance codes: ABEC-1, ABEC-3, ABEC-5, ABEC-7Vibration level codes: V4, V3, V2, V1Internal clearance codes: C2, C3 ... by air or by shipment: 2013 high quality ntn bearing eccentric bearing ,bearing 6205 2013 high quality ntn bearing eccentric bearing ,bearing 6205 ...