Reference Source

ISO 21771:2007

For ISO 21771:2007, item title is Gears — Cylindrical involute gears and gear pairs — Concepts and geometry; status code is 9599; successor is ISO 21771-1:2024; withdrawn / published date is 2007-08-28, recorded from its source on 2026-08-05.

Identifier
ISO 21771:2007 verified
Item title
Gears — Cylindrical involute gears and gear pairs — Concepts and geometry verified
Status code
9599 verified
Successor
ISO 21771-1:2024
Withdrawn / published date
2007-08-28 verified
Sourceisopublicstorageprod.blob.core.windows.net
Verified
Review by
DatasetWithdrawn and superseded ISO standards

What the source says

35989,IS,,ISO 21771:2007,Gears — Cylindrical involute gears and gear pairs — Concepts and geometry,Engrenages — Roues et engrenages cylindriques à développante — Concepts et géométrie,2007-08-28,1,['21.200'],ISO/TC 60/SC 1,9599,[10361],[84949],['en'],83,"<p>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.</p>"

isopublicstorageprod.blob.core.windows.net, retrieved 2026-08-05

Source

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