Published
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.
Revises
ISO/TR 4467:1982
PUBLISHED
ISO 21771:2007
90.92
Standard to be revised
Jul 28, 2022
IN_DEVELOPMENT
ISO/PRF 21771-1
Gears — Cylindrical involute gears and gear pairs — Concepts and geometry
60.60 Standard published
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