October 18, 2018
1. What is the applicable scope of GB12300-90 "Conical fit"? A: The applicable scope of the "cone fit" national standard is the same as the "cone tolerance" national standard, that is, the taper c is from 1:3 to 1:500, length I Fit from 6 to 630 mm, diameter to 500 mm smooth cone. At the same time, the conical tolerance of the matching cone shall be specified in the "cone tolerance" standard.