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 |