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BS 978-2:1952

Current
Current

The latest, up-to-date edition.

Specification for fine pitch gears Cycloidal type gears
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

24-01-1952

Co-operating organizations
Foreword
Section one: General
1 Scope
2 Terminology and notation
3 Range of standard modules
Section two: Tooth form and proportions
4 Wheels driving pinions
5 Driven pinions
6 Wheels and pinions for trains in which the pinion may
   act sometimes as the driver and sometimes as the
   driven member
7 Contrate gears
Section three: Tolerances (in millimetres)
Appendices
A Notes on the derivation of cycloidal gears where the
   wheel drives the pinion
B Notation

Forms and proportions of spur gears for instruments and clockwork mechanisms from 0.070 modules to 1.000 module. Provisions for contrate gears, derivation of cycloidal gears (where the wheel drives the pinions), tolerances.

This part applies to cycloidal type spur gears for spring or weight-driven mechanisms in which:

  1. the pinion is the driven member, or
  2. the pinion is required to act sometimes as the driver and sometimes as the driven member.

For integrating electricity meters the particular form of gear specified herein is not necessary and it is recognised that other existing forms of gear will continue to be used.

Committee
MCE/5
DocumentType
Standard
Pages
14
PublisherName
British Standards Institution
Status
Current

BS 4582-1:1970 Specification for fine pitch gears (metric module) Involute spur and helical gears
BS 978-5:1965 Specification for fine pitch gears Hobs and cutters
BS 4582-2:1978 Specification for fine pitch gears (metric module) Hobs and cutters
BS 436-1:1967 Spur and helical gears Basic rack form, pitches and accuracy (diametral pitch series)
BS 978-2:Addendum No. 1:1959 Gears for instruments and clockwork mechanisms. Cycloidal type gears. Double circular arc type gears
BS 978-1:1968 Specification for fine pitch gears. Involute spur and helical gears

BS 978-1:1968 Specification for fine pitch gears. Involute spur and helical gears

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