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immediate downloadReleased: 1952-01-24
BS 978-2:1952
Specification for fine pitch gears Cycloidal type gears
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| Standard number: | BS 978-2:1952 |
| Pages: | 14 |
| Released: | 1952-01-24 |
| ISBN: | 0 580 34084 8 |
| Status: | Standard |
DESCRIPTION
BS 978-2:1952
This standard BS 978-2:1952 Specification for fine pitch gears is classified in these ICS categories:
- 21.200 Gears
This part applies to cycloidal type spur gears for spring or weight-driven mechanisms in which:
- the pinion is the driven member, or
- 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.
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.