BS 978-1:1968

BS 978-1:1968

January 1968
Standard Current

Specification for fine pitch gears. - Involute spur and helical 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.

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Main informations

Collections

BSI English standards

Publication date

January 1968

Number of pages

36 p.

Reference

BS 978-1:1968

ICS Codes

21.200   Gears

Print number

1
Sumary
Specification for fine pitch gears. - Involute spur and helical 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.
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