... precision 3,prompt delivery 4,Precision Deep Groove Ball Bearings, are widely used in various applications, ... ,62300 & NR series bearings3 Extra-large size ball bearings, which ID ranges from 180mm to 6300mm ... to customers' drawings & samples.6 Shield/closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ7 Tolerance Code ... : ABEC-1, ABEC-3, ABEC-58 Vibration level code:V3, V2,V19 Internal clearance: C2, C3, ...