Tooth root circle diameter df, df=d-dr
Technical Parameters
SprocketParameter calculation formula:
Diameter of the index circle: d=p/sin180°/zp=pitch can be found in the table z=number of teeth
Addendum circle (outer diameter): D=p×(0.54+cot180°/z)
Commonly used sprocket pitch:
3/8=9.525 1/2=12.7 5/8=15.875 3/4=19.05
3 points 4 points 5 points 6 points
Diameter of the index circle: d=p/sin (180°/z)
Addendum circle diameter: dmax=d+1.25p-d1
dmin=d+(1-1.6/z)p-d1
Tooth root circle diameter: df=d-d1
Note: p chain pitch
SprocketNumber of teeth
d1 Chain roller diameter
Sprocket model: including non-standard sprocket (customized according to customer drawings), standard sprocket (American standard and metric).
Commonly used materials for sprocket: C45
Common processing methods of sprocket: quenching treatment, surface blackening treatment