Features :   
Shield / closure: open ball bearing, Z, ZZ, RS, 2RS,2RZ
Ball bearings snap ring: N, NR
Tolerance codes: ABEC-1, ABEC-3, ABEC-5, ABEC-7
Vibration level codes: V4, V3, V2, V1
Internal clearance codes: C2, C3, C4, C5
Ball bearings material: AISI52100, AISI440C, AISI304, AISI316, ceramic
Retainer: PTFE, nylon, PEEK or stainless steel
Hardness for rings and balls: 59 - 63HRC
Ball bearings bore size: 1 - 200mm

Versions:   
Ball bearings with one or two side rubber seal RS, 2RS
With one or two side metal shields Z and ZZ (2Z)
With a snap ring groove in outer ring N
With a snap ring groove in outer ring and external snap ring NR
In different radial clearances C5, C4, C3, C2

Applications :  
Typical applications: electric motors, automotive applications, home appliances, industrial equipment.

Type :
Open type(Inch series)
With rubber seals/steel shields type(Metric series)
With snap ring/snap ring qroove
Flange ball bearings(Metric series)
Flange ball bearings(Inch series)