What are the modulus of the spur gears?
Select the first series, followed by the second series. Do not use the modulus in parentheses as much as possible
The second series has 0.35, 0.7, 0.9, 1.75, 2.25, 2.75 (3.25), 3.5 (3.75), 4.5, 5.5, (6.5), 79 (11), 14182228 (30), 3645
According to GB/T 1357-1987, there are two series. The first series are 0.12, 0.15, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6,, 0.81, 1.25, 1.52, 2.5345681012, 162025324050
