ISO/FDIS 21771-2

Cylindrical involute gears and gear pairs — Part 2: Calculation and measurement of tooth thickness and backlash ISO/FDIS 21771-2

General information

Current stage: 50.00 Final text received or FDIS registered for formal approval Mar 12, 2025

Originator: ISO

Type: International Standard

ICS: 21.200 Gears

Scope

This standard establishes the calculation procedures for determining specification limits for external andinternal cylindrical involute gearing with constant gear ratio when the desired tooth thickness is known.This standard also shows the relationships between backlash and the tooth thickness, centre distance,and tooth deviations in a pinion and gear mesh.

Life cycle

NOW

IN_DEVELOPMENT
ISO/FDIS 21771-2
50.00 Final text received or FDIS registered for formal approval
Mar 12, 2025