BS 978-2:Addendum No. 1:1959 - Gears for instruments and clockwork mechanisms. Cycloidal type gears. Double circular arc type gears

BS 978-2:Addendum No. 1:1959

Gears for instruments and clockwork mechanisms. Cycloidal type gears. Double circular arc type gears

Status : Confirmed, Current   Published : May 1959

Format
PDF

Format
HARDCOPY



Basic rack tooth shape and modules from 0.150 mm to 0.700 mm inclusive. Limits of tolerance for tip diameter, pitch, tooth thickness, profile, axial and radial run-out and centre distance; cutters for pinions with from six to twelve teeth.




Standard NumberBS 978-2:Addendum No. 1:1959
TitleGears for instruments and clockwork mechanisms. Cycloidal type gears. Double circular arc type gears
StatusConfirmed, Current
Publication Date15 May 1959
Confirm Date24 May 2021
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 ByAMD 3083
DescriptorsHelical gears, Gear wheels, Gear drives, Imperial system, Time-measuring instrument components, Spur gears, Dimensions, Milling cutters, Tooth profiles, Basic racks, Dimensional tolerances, Clock movements, Instruments, Gear parameters
ICS21.200
Title in FrenchEngrenages pour instruments et mecanismes d'horlogerie. Engreanges de type cycloidal. Engrenages a double arc circulaire
Title in GermanZahnraeder fuer Instrumente und Uhrwerkmechanismen. Zykloidalzahnraeder. Doppelkreisbogenzahnraeder
CommitteeMCE/5
ISBN0 580 34084 8
PublisherBSI
FormatA4
DeliveryYes
Pages8
File Size267 KB
Price£112.00


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