ISO 21771:2007

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

Publication date: Aug 28, 2007

General information

Current stage: 90.92 Effective date: Jul 28, 2022

Originator: ISO

Owner: ISO/TC 60/SC 1

Type: International Standard

ICS: 21.200

Languages: English

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Status: Published

PDF - EC$626.08

Paper - EC$626.08

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Scope

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.

Life cycle

PREVIOUSLY

Revises
ISO/TR 4467:1982

NOW

PUBLISHED
ISO 21771:2007
90.92 Standard to be revised
Jul 28, 2022

REVISED BY

IN_DEVELOPMENT
ISO/DIS 21771-1

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