BS 978-3:1952 - Specification for fine pitch gears. Bevel gears

BS 978-3:1952

Specification for fine pitch gears. Bevel gears

Status : Confirmed, Current   Published : January 1952



Form, proportions of machine cut conical gears connecting intersecting shafts in pitch range 20 to 80 D.P. Straight or curved teeth with normal pressure angle 20 at pitch cone. Addendum modification, permissible errors and tolerances for Class A, Class B gears.

Standard NumberBS 978-3:1952
TitleSpecification for fine pitch gears. Bevel gears
StatusConfirmed, Current
Publication Date24 January 1952
Confirm Date15 May 2020
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Amended ByPD 2408
DescriptorsTooth profiles, Dimensional tolerances, Instruments, Time-measuring instrument components, Dimensions, Grades (quality), Basic racks, Conical shape, Clock movements, Bevel gears, Spiral gears, Gear parameters, Gear drives, Imperial system
Title in FrenchEngrenages pour instruments et mecanismes d'horlogerie. Engrenages coniques
Title in GermanZahnraeder fuer Instrumente und Uhrwerkmechanismen. Kegelzahnraeder
ISBN0 580 34085 6
File Size503 KB

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