supply ball bearings with high precision and low noise made-in-china. Such as 6000/6200/6300/6800/6900/16000 series. Features:1) Materials: Rings and balls: GCr15 chrome bearing steel (AISI52100) 2) Type: open, RS, 2RS, Z, ZZ3) Tolerance: ABEC-1, ABEC-34) Vibration: blank, V1, V2, V35) Clearance: blank, C2, C3Applications:This type of bearings is the most popular of all antic-friction bearing ...