one,SprocketThe number of teeth Z is calculated according to the transmission ratio ι:
n1: Small sprocket speed
n2: Speed of large sprocket
Z1: Number of small sprocket teeth
Z2: Large number of sprocket teeth
two,SprocketThe index circle diameter D
D=P/[sin(180°/Z)] , the sprocket is not more than the gear, just give "the number of teeth, the number of rows and the model of the chain". Because the tooth type of the sprocket and some other important dimensions are It is determined by the chain he is paired with, not the sprocket itself.