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 3.250 in

Length Through Bore_SYN

N/A 1.000 in

Sprocket Style_SYN

N/A B

Number of Teeth_SYN

N/A 38

Bore Diameter_SYN

N/A 1.250 in

Max. Bore

N/A 2.250 in

Weight_SYN

N/A 3.500 lb

Tooth Width_SYN

N/A 0.284 in

Hardened Teeth 

N/A Yes

Industry Equivalent

N/A 40BS38 1 1/4

UPC Code

N/A 097039326003

Chain Technical Data

Chain Pitch_SYN

N/A 0.500 in

Chain Number_SYN

N/A 40

Sprocket Diameters

Outside Diameter_SYN

N/A 6.330 in

Pitch Diameter_SYN

N/A 6.055 in

Caliper Sprocket Diameter at 3/8 in Pitch

N/A 5.742 in