... (D)thickness (b)Inner hole (d)Number of teeth ZK14K11H7ⅠⅡⅢβ=14°β=25°504,5,6,8,1016141214—60,635,6,8 ... ,806,8,10,12,14,16,18,2027181620141006,8,10,12,14,16,18,20,2527201824161258,10,12,14,16,18,20,253222202624150,1608,10 ... ,12,14,203226243016Note: Ⅲ type for helical ...