No. 40, B Style, .625" Finished Bore
All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Hub Diameter_SYN

 3.500 in

Length Through Bore_SYN

 1.125 in

Sprocket Style_SYN

 B

Number of Teeth_SYN

 43

Bore Diameter_SYN

 0.625 in

Max. Bore

 2.375 in

Weight_SYN

 4.800 lb

Tooth Width_SYN

 0.284 in

Hardened Teeth 

 Yes

Industry Equivalent

 40BS43 5/8

UPC Code

 097039305251

Chain Technical Data

Chain Pitch_SYN

 0.500 in

Chain Number_SYN

 40

Sprocket Diameters

Outside Diameter_SYN

 7.130 in

Pitch Diameter_SYN

 6.850 in

Caliper Sprocket Diameter at 3/8 in Pitch

 6.532 in