ISO/DIS 21771-1:2026
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ISO/DIS 21771-1:2026

Cylindrical involute gears and gear pairs
Part 1: Concepts and geometry

Summary

This document specifies the geometric concepts and parameters for cylindrical gears with involute helicoid tooth flanks. Flank modifications are included. The formulae in this document apply to all pressure angles. It also covers the concepts and parameters for involute cylindrical gear pairs with parallel or crossed axes, and a constant gear ratio. Gear and mating gear in these gear pairs have the same basic rack tooth profile.

Notes

40.00 : DIS enregistré

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 02/12/2026
Edition 2
Page Count 163
EAN ---
ISBN ---
Weight (in grams) ---

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