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ISO 21771-2:2025

Cylindrical involute gears and gear pairs — Part 2: Calculation and measurement of tooth thickness and backlash
18. 12. 2025.

Опште информације

60.60     18. 12. 2025.

ISO

ISO/TC 60/SC 1

Međunarodni standard

21.200  

engleski   francuski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

This document establishes the calculation procedures for determining specification limits for external and internal cylindrical involute gearing with constant gear ratio when the desired tooth thickness is known. It also shows the relationships between backlash and the tooth thickness, centre distance, and tooth deviations in a pinion and gear mesh.
This document applies to the following types of gears:
—     external and internal parallel axis cylindrical involute spur and helical gears;
—     involute worms and crossed axis gears;
—     spur and helical racks;
—     involute spur and helical sector gears.
The formulae in this document apply to gears of all sizes and materials, and to all manufacturing methods.
This document does not provide guidance on selecting the tooth thickness or the tolerance on the thickness.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 21771-2:2025
60.60 Standard objavljen
18. 12. 2025.