Shield / closure: open ball bearing, Z, ZZ, RS, 2RS,2RZ
Ball bearings snap ring: N, NR
Tolerance codes: ABEC-1, ABEC-3, ABEC-5
Vibration level codes: V4, V3, V2, V1
Internal clearance codes: C2, C3, C4, C5
Ball bearings material: GCr15, SAE52100(USA), DIN100Cr6(Germany), BS535A99(UK)
Cage: SPCC, nylon66
Hardness for rings and balls: 60- - 65HRC

Lubrication:Oil,Grease

Revolutions:3000rpm—8000rpm

Heat-resisting:-40℃--50℃

Noise:≤Z3

Long Life:≥500h