No. 40, B Style, 1.188" Finished Bore
All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Hub Diameter_SYN

2.125 in

Length Through Bore_SYN

1.000 in

Sprocket Style_SYN

B

Number of Teeth_SYN

17

Bore Diameter_SYN

1.188 in

Max. Bore

1.438 in

Weight_SYN

0.880 lb

Tooth Width_SYN

0.284 in

Hardened Teeth 

Yes

Industry Equivalent

40BS17 1 3/16

UPC Code

097039324214

Chain Technical Data

Chain Pitch_SYN

0.500 in

Chain Number_SYN

40

Sprocket Diameters

Outside Diameter_SYN

2.970 in

Pitch Diameter_SYN

2.721 in

Caliper Sprocket Diameter at 3/8 in Pitch

2.397 in