BS 292-1:1982

Foreword
Cooperating organizations
Specification
1. Scope
3. Terminology
4. Definitions and symbols
5. ISO general plan for boundary dimensions
6. Bearing types and dimensions
7. Chamfer dimensions, fillets and abutments
8. Temperature for measurement and operation
9. Tolerance classes
10. Radial internal clearances
11. Bearing designations
12. Guidance on bearing basic load and life ratings
Appendices
A. Comparison between new and former designations for
     metric bearings
B. Index to metric British Standards for rolling
     bearings, features, accessories and spherical
     plain bearings
Tables
Tolerances
1. Inner ring tolerances (normal tolerance class)
2. Outer ring tolerances (normal tolerance class)
Radial internal clearance values
3. Single row radial ball bearings with cylindrical
     bore
4. Double row self-aligning ball bearings with
     cylindrical bore
5. Cylindrical roller bearings with cylindrical bore
6. Spherical roller bearings with cylindrical bore
Dimensions
Single row radial and double row self-aligning ball
bearings
7. ISO dimension series 10, 02 and 03: miniature sizes
Single row radial ball bearings
8. ISO dimension series 18
9. ISO dimension series 10
10. ISO dimension series 02
11. ISO dimension series 03
12. ISO dimension series 04
13. Single row radial ball bearings with shields, seals,
     snap rings and/or filling slots (preferred bearing
     sizes)
Single row angular contact ball bearings
14. ISO dimension series 10
15. ISO dimension series 02
16. ISO dimension series 03
17. ISO dimension series 04
Four point contact (duplex) ball bearings with two piece
inner ring
18. ISO dimension series 02
19. ISO dimension series 03
Double row self-aligning ball bearings
20. ISO dimension series 02
21. ISO dimension series 03
22. ISO dimension series 22
23. ISO dimension series 23
Cylindrical roller bearings
24. ISO dimension series 10
25. ISO dimension series 02
26. ISO dimension series 03
27. ISO dimension series 04
Spherical roller bearings
28. ISO dimension series 30
29. ISO dimension series 40
30. ISO dimension series 31
31. ISO dimension series 41
32. ISO dimension series 22
33. ISO dimension series 32
34. ISO dimension series 03
35. ISO dimension series 23
36. Comparison of bearing designations
Figures
1. Single row radial ball bearing
     (a) Basic design
     (b) Double shielded (capped bearing)
     (c) Double sealed (capped bearing)
     (d) With snap ring groove and snap ring
     (e) With filling slot
2. Single row angular contact ball bearing
3. Four point contact (duplex) ball bearing with
     two piece inner ring
4. Double row self-aligning ball bearing
5. Cylindrical roller bearing
     (a) Separable outer ring
     (b) With separate thrust collar (separable inner
          ring)
6. Spherical roller bearing
7. Symbols for boundary dimensions
8. Extract from the ISO general plan for boundary
     dimensions
9. External corners of bearings

Dimensions, tolerances, terminology, designations for metric series ball bearings, cylindrical and spherical roller bearings complying with the ISO general plan for boundary dimensions. Comprehensive list of British Standards for rolling bearings and their international equivalents appended.