Transmission sprocket or roller sprocket analysis

The drive sprocket is also called the roller sprocket.

[1] The main dimensions and basic parameters are commonly used with chains P=12.7 15.875 19.05 25.4

dr=7.92 10.16 11.91 15.88

Number of sprocket teeth Z Pitch P Roller outer diameter dr Row pitch pt Index circle diameter d, d=p/sin180°/z

Addendum diameter da, da=d+1.25p-dr or da=p(0.54+cot180°/z)

Root circle diameter df, df=d-dr