No. 40, B Style, 1.125" Finished Bore
All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Hub Diameter

2.125 in

LTB

1.000 in

Style

B

No. Teeth

17

Finished Bore Diameter

1.125 in
Max. Bore1 1.438 in

Weight

0.880 lb

Tooth Nominal Width

0.284 in

Hardened Teeth 

Yes

Industry Equivalent

40BS17 1 1/8

UPC Code

097039324207

Chain Technical Data

Pitch

0.500 in

Chain Size

40

Sprocket Diameters

Outside Diameter

2.970 in

Pitch Diameter

2.721 in

Caliper Diameter

2.397 in
  • 1 Dimensions shown allow for standard keyway with set screw at 90°.