Gears 74*15-17*9 of the grinder gearbox Bort, Zenit, Greapo 230

A pair of toothed pinions of the Bort, Zenit, Greapo 230 grinder measuring 74*15 on a key and a small h17.5*d9 mm with a 10 mm cross-cut on the skirt - for fixing on the anchor

The internal landing diameter of the large gear is 15 mm on the key
Inner landing diameter of small gear 9 mm