GOST 21721-1976
Horizontal hobbing machines for cylindrical fine-pitch gears. Basic dimensions

Standard No.

GOST 21721-1976

Release Date

1976

Published By

RU-GOST R

Latest

GOST 21721-1976

Scope

This standard applies to horizontal gear hobbing machines designed for cutting small-module spur gears.

GOST 21721-1976 Referenced Document

• GOST 6636-1969 Standard linear dimensions*， 2024-04-19 Update

GOST 21721-1976 history

• 1976 GOST 21721-1976 Horizontal hobbing machines for cylindrical fine-pitch gears. Basic dimensions