No. 40, B Style, 1.00" Finished Bore
All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Hub Diameter_SYN

2.313 in

Length Through Bore_SYN

1.000 in

Sprocket Style_SYN

B

Number of Teeth_SYN

18

Bore Diameter_SYN

1.000 in

Max. Bore

1.500 in

Weight_SYN

1.030 lb

Tooth Width_SYN

0.284 in

Hardened Teeth 

Yes

Industry Equivalent

40BS18 1

UPC Code

097039324269

Chain Technical Data

Chain Pitch_SYN

0.500 in

Chain Number_SYN

40

Sprocket Diameters

Outside Diameter_SYN

3.140 in

Pitch Diameter_SYN

2.879 in

Caliper Sprocket Diameter at 3/8 in Pitch

2.567 in