Specification for fine pitch gears (metric module). Involute spur and helical gears.

The information about the standard:

Designation standards: BS 4582-1:1970
Publication date standards: 27.3.1970
The number of pages: 29
Approximate weight : 87 g (0.19 lbs)
Country: British technical standard
Category: Technical standards BS

Annotation of standard text BS 4582-1:1970 :

Covers gears having modules of 1 mm and less including first and second preferences. 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 give information on single flank testing, calculation of measuring pin dimensions and examples of calculations for various design conditions. Metric equivalent of BS 978-1. Status: Confirmed