BS 328-4:1983

Foreword
Committees responsible
Specification
1. Scope
2. Nomenclature
3. Terms and definitions
4. General dimensions
5. Cutting dimensions
6. Hand reamers
7. Long-flute machine reamers
8. Machine chucking reamers with Morse taper shanks
9. Machine chucking reamers with parallel shanks
10. Shell reamers and their arbors
11. Parallel shank hand socket reamers for Morse and
     5% metric tapers
12. Taper shank machine socket reamers for Morse and
     5% metric tapers
13. Hand taper pin reamers (taper 1 in 50)
14. Machine taper pin reamers (taper 1 in 50)
15. Machine bridge reamers with Morse taper shanks
Appendices
A. Tolerances for special reamers
B. Related tolerances extracted from BS4500: Part 1
C. Reamers with fractional (inch) cutting diameters
D. Tables of dimensions set out as functions of
     reamer diameter
Tables
1. Tolerances on lengths
2. Hand reamers. Preferred diameters and related
     dimensions
3. Long-flute machine reamers. Preferred diameters
     and related dimensions
4. Machine chucking reamers with Morse taper shanks.
     Preferred diameters and related dimensions
5. Machine chucking reamers with parallel shanks.
     Preferred diameters and related dimensions
6. Shell reamers with taper bore. Preferred diameters
     and related dimensions
7. Arbors for shell reamers with taper bore. Dimensions
8. Parallel shank hand socket reamers for Morse and
     5% metric tapers
9. Taper shank machine socket reamers for Morse and
     5% metric tapers
10. Hand taper pin reamers. Dimensions
11. Machine taper pin reamers with parallel shanks.
     Dimensions
12. Machine taper pin reamers with Morse taper shanks.
     Dimensions
13. Machine bridge reamers. Preferred diameters and
     related dimensions
14. Limits of tolerance f8
15. Limits of tolerance h9
16. Limits of tolerance h11
17. Limits of tolerance h12
18. Limits of tolerance k11
19. Limits of tolerance m6
20. Limits of tolerance H13
21. Hand reamers (inch series). Preferred diameters
     and related dimensions
22. Long-flute machine reamers with Morse taper shanks
     (inch series). Preferred diameters and related
     dimensions
23. Machine chucking reamers with Morse taper shanks
     (inch series). Preferred diameters and related
     dimensions
24. Machine chucking reamers with parallel shanks
     (inch series). Preferred diameters and related
     dimensions
25. Shell reamers with taper bore (inch series).
     Preferred diameters and related dimensions
26. Arbors for shell reamers with taper bore
     (inch series). Dimensions
27. Hand taper pin reamers (inch series, taper 1 in 48).
     Dimensions
28. Machine taper pin reamers with Morse taper shanks
     (inch series, taper 1 in 48). Dimensions
29. Hand reamers. General table
30. Long-flute machine reamers. General table
31. Machine chucking reamers with Morse taper shanks.
     General table
32. Machine chucking reamers with parallel shanks.
     General table
33. Machine bridge reamers. General table
Figures
1. Principle elements of reamers
2. Entering end of reamers
3. Transverse section of reamer
4. Bevel lead and taper lead
5. Undercut and overcut faces
6. Lead normal clearances
7. Taper reamer
8. Morse taper shank machine bridge reamer
9. Shell reamer with taper bore
10. Hand reamer
11. Hand reamer with long taper lead
12. Long-flute machine reamer
13. Machine chucking reamer with Morse taper shank
14. Machine chucking reamers with parallel shanks
15. Shell reamer with taper bore
16. Arbor for shell reamer with taper bore
17. Parallel shank hand socket finishing reamer
     with straight flutes
18. Parallel shank hand socket finishing reamer with
     spiral flutes
19. Taper shank machine socket roughing reamer with
     spiral flutes
20. Taper shank machine socket finishing reamer with
     straight flutes
21. Taper shank machine socket finishing reamer with
     spiral flutes
22. Hand taper pin reamer (taper 1:50)
23. Machine taper pin reamer with parallel shank
24. Machine taper pin reamer with Morse taper shank
25. Machine bridge reamer with Morse taper shank and
     straight flutes
26. Machine bridge reamer with Morse taper shank and
     helical flutes
27. Graphical representation of the calculation of
     tolerances for special reamers
28. Hand reamer
29. Long-flute machine reamer
30. Machine chucking reamer with Morse taper shank
31. Machine chucking reamers with parallel shanks
32. Shell reamer with taper bore (inch series)
33. Arbor for shell reamer with taper bore (inch
     series)
34. Hand taper pin reamer (inch series, taper 1 in 48)
35. Machine taper pin reamer with Morse taper shank
     (inch series, taper 1 in 48)
36. Hand reamer
37. Long-flute machine reamer
38. Machine chucking reamer with Morse taper shank
39. Machine chucking reamers with parallel shanks
40. Machine bridge reamer with Morse taper shank and
     helical flutes

Nomenclature, dimensions and tolerances for hand reamers, long flute machine reamers, machine chucking reamers, shell reamers, socket reamers, hand taper pin reamers, machine taper pin reamers and bridge reamers.

This Part of this British Standard specifies the dimensions of the following commonly used types of reamer:

hand reamers

long-flute machine reamers¹⁾ with Morse taper shanks

machine chucking reamers¹⁾ shell reamers

socket reamers

hand taper pin reamers

machine taper pin reamers

bridge reamers

A method of calculating tolerances for special reamers is given in Appendix A. Appendix B shows the values of certain of the limits of tolerance specified, extracted from BS 4500-1. Appendix C specifies preferred inch sizes of cutting diameters for various types of reamer, and Appendix D shows tables of dimensions set out as functions of reamer diameter, i.e. “general tables??.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.