I,SprocketsThe number of teeth Z is calculated from the ratio ι:
n1: Small sprocket speed
n2: Large sprocket speed
Z1: Number of small sprocket teeth
Z2: Number of teeth of large sprocket
II,SprocketsThe diameter of the indexing circle D
D=P/[sin(180 degree/Z)], the sprocket is not like a gear, just give the "number of teeth, number of rows and the type of chain". Because the tooth type and other important dimensions of the sprocket are determined by the chain with which it is matched, not by the sprocket itself.