Single row angular contact ball bearings are mainly used for undertaking combined radial and axial loads, and also for pure radial load. These bearings have a high rotating speed. Materials of the bearings’ rings are refined bearing steel GCr15 and other types of bearing steel, while balls are adopting GCr15 or ceramic.

1. Size designations

70xxC; 70xxAC; 72xxAC; 72xxB; 73xxC

2. Designs, types and features

/C:   nominal contact angle a=15°

/AC:  nominal contact angle a=20°

/A:   nominal contact angle a=30°

/B:   nominal contact angle a=40°

/M:   solid brass retainer  

/TN:  glass-fiber reinforced nylon retainer

3. Mounting Combination

/DB: mount inserts, back to back

/DF: mount in sets, face to face

/DT: mount in sets, tandem

4. Clearance

/C2: less than nominal clearance

/C0: nominal clearance, omitted in designation

/C3: larger clearance than C0

/C4: larger clearance than C3

/C5: larger clearance than C4

/C9: non-standard

5. Tolerance Class

/P0: equals grade ABEC-1, omitted in designation

/P6: equals grade ABEC-3

/P5: equals grade ABEC-5

/P4: equals grade ABEC-7

/P2: equals grade ABEC-9