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ISO 677:1976

Straight bevel gears for general engineering and heavy engineering — Basic rack

Jun 1, 1976

General information

90.20     Jan 15, 2026

ISO

ISO/TC 60

International Standard

21.200  

French   English  

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Published

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Scope

Specifies the dimensional characteristics of the basic rack, having a constant bottom clearance. In these gear pairs the tip angle of one gear is equal to the difference between the designed shaft angle and the root angle of the mating gear. Gives profile and some notes and defines the terms basic rack and reference line.

Life cycle

NOW

PUBLISHED
ISO 677:1976
90.20 Standard under periodical review
Jan 15, 2026

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