Horizontal hobbing machines for cylindrical fine-pitch gears. Basic dimensions
NORM herausgegeben am 1.1.1978
Designation standards: GOST 21721-76
Publication date standards: 1.1.1978
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: Russian technical standard
Kategorie: Technische Normen GOST
Implemented changes and corrections:
Amd. 5.83