No. 40, B Style, 1.250" Finished Bore
All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Hub Diameter_SYN

N/A 3.500 in

Length Through Bore_SYN

N/A 1.125 in

Sprocket Style_SYN

N/A B

Number of Teeth_SYN

N/A 57

Bore Diameter_SYN

N/A 1.250 in

Max. Bore

N/A 2.375 in

Weight_SYN

N/A 6.940 lb

Tooth Width_SYN

N/A 0.284 in

Hardened Teeth 

N/A Yes

Chain Technical Data

Chain Pitch_SYN

N/A 0.500 in

Chain Number_SYN

N/A 40

Sprocket Diameters

Outside Diameter_SYN

N/A 9.360 in

Pitch Diameter_SYN

N/A 9.077 in

Caliper Sprocket Diameter at 3/8 in Pitch

N/A 8.760 in