BS 235:1987
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for gears for electric traction
Hardcopy , PDF
01-12-2005
English
23-12-1987
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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Withdrawn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 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 |
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