螺距 p 1.25 1.5 1.75 2 2 1.5 1.5
b L<=125 14.5 17.5 20.5 22 25 27.5 28.5
125
ds 9 11 13 15 17 19 21
k max 5.45 6.58 7.79 9.09 10.29 11.85 12.85
min 5.15 6.22 7.21 8.51 9.71 11.15 12.15
s max 13 16/17 18/19 21/22 24 27 30
min 12.73 15.73 17.57 20.16 23.16 26.16 29.16