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ISO 21771:2007

Gears -- Cylindrical involute gears and gear pairs -- Concepts and geometry

General information

Withdrawn from 24.10.2024
ICS Groups
21.200 Gears
Directives or regulations
None

Standard history

Status
Date
Type
Name
24.10.2024
Main
28.08.2007
Main
Main
ISO/TR 4467:1982
ISO 21771:2007 specifies the geometric concepts and parameters for cylindrical gears with involute helicoid tooth flanks. Flank modifications are included. It also covers the concepts and parameters for cylindrical gear pairs with parallel axes and a constant gear ratio, which consist of cylindrical gears according to it. Gear and mating gear in these gear pairs have the same basic rack tooth profile.

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