BS 235:1987

Withdrawn

Specification for gears for electric traction

Available format(s)

Hardcopy , PDF

Withdrawn date

01-12-2005

Language(s)

English

Published date

23-12-1987

Publisher

British Standards Institution

Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Gear tooth accuracy grades
4. Symbols
5. Normal modules
6. Form of gear tooth
7. Gear tooth accuracy
8. Hardness and case depth of finished surface
     hardened gears
9. Gear load capacity
10. Features of the wheels and pinions
11. Marking
Appendices
A. Ordering instructions
B. Guidance on materials for the manufacture of
     traction gears
C. Recommended method for determining bedding area
     of taper bores
D. Guidance on the selection of the gear tooth
     accuracy grades
Tables
1. Nominal tooth dimensions of wheels and pinions
2. Tolerance on pitch
3. Limits of tolerance on tooth profile
4. Limits of tolerance on total composite error
5. Limits of tolerance on tooth alignment
6. Case depth of finished, surface hardened gears
7. Materials for traction gears complying with
     BS970: Part 1
8. Gear tooth accuracy grades
Figures
1. Basic rack tooth profile for unit normal metric
     module
2. Typical tooth profile modification
3. Typical tooth profile tolerance chart
4. Example of a typical tooth profile tolerance
     chart

Requirements for spur and helical gears for the drive between the electric motor and the axle of vehicles running on rails in the accuracy grades 5, 6, 7 and 8 of BS 436-2.

Committee	MCE/5
DevelopmentNote	Supersedes 86/71474 DC and BS 235(1972) (06/2005)
DocumentType	Standard
Pages	16
PublisherName	British Standards Institution
Status	Withdrawn
Supersedes	BS 235:1972

BS 6443:1984	Method for penetrant flaw detection
BS 4506:1970	Specification for shaft ends
BS 436-3(1970) : LATEST
BS 891-1:1962	Method for Rockwell hardness test Testing of metals
PD 6457:1970	Guide to the application of addendum modification to involute spur and helical gears
BS 4235-1:1972	Specification for metric keys and keyways Parallel and taper keys
BS 1134-1:1972	Method for the assessment of surface texture Method and instrumentation
BS 4490:1969	Methods for the determination of the austenitic grain size of steel
BS 436-2:1970	Spur and helical gears Basic rack form, modules and accuracy (1 to 50 metric module)
BS 6072:1981	Method for magnetic particle flaw detection
BS 427-1:1961	Method for Vickers hardness test Testing of metals
BS 2519-2:1976	Glossary for gears Notation
BS 6479:1984	Method for determination and verification of the effective depth of carburized and hardened cases in steels