How does the gear root coefficient come from?
The gear tooth root coefficient is now specified by the national standard. According to the national standard, gear is selected to manufacture cutters to make gears.
The top clearance coefficient is 0.25.The so-called "gear root high coefficient", equal to the gear addendum coefficient of 1, plus the top clearance coefficient of 0.25, equal to 1.25
The gear has only the addendum coefficient and the backlash coefficient, and there is no tooth root coefficient. The addendum coefficient of a standard gear is 1