No. 40, B Style, 1.438" Finished Bore
All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Hub Diameter_SYN

 3.250 in

Length Through Bore_SYN

 1.000 in

Sprocket Style_SYN

 B

Number of Teeth_SYN

 37

Bore Diameter_SYN

 1.438 in

Max. Bore

 2.250 in

Weight_SYN

 3.450 lb

Tooth Width_SYN

 0.284 in

Hardened Teeth 

 Yes

UPC Code

 097039305053

Chain Technical Data

Chain Pitch_SYN

 0.500 in

Chain Number_SYN

 40

Sprocket Diameters

Outside Diameter_SYN

 6.170 in

Pitch Diameter_SYN

 5.896 in

Caliper Sprocket Diameter at 3/8 in Pitch

 5.578 in