No. 40, B Style, 1.188" 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

 54

Bore Diameter_SYN

 1.188 in

Max. Bore

 2.375 in

Weight_SYN

 6.240 lb

Tooth Width_SYN

 0.284 in

Hardened Teeth 

 Yes

Industry Equivalent

 40BS54 1 3/16

UPC Code

 097039326447

Chain Technical Data

Chain Pitch_SYN

 0.500 in

Chain Number_SYN

 40

Sprocket Diameters

Outside Diameter_SYN

 8.880 in

Pitch Diameter_SYN

 8.599 in

Caliper Sprocket Diameter at 3/8 in Pitch

 8.286 in