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BS 978-1 PDF
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Specification for fine pitch gears.
| Published by | Publication Date | Number of Pages |
| BSI | 01/31/1968 | 32 |
BS 978-1 – Specification for fine pitch gears.
Gears of pitch range greater than 20, up to 200 diametral pitch. Standard pitches; two basic racks (one with backlash allowance); modification of addendum and centre distance to suit various conditions. Four grades of accuracy with elemental and dual flank composite test tolerances. Appendices: single flank testing, calculation of measuring pin dimensions, calculations for various design conditions.
Cross References:
BS 978:Part 2
BS 978:Part 3
BS 978:Part 5
PD 3376
Replaces BS 978:Part 1:1962.
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