No. 40, B Style, .875" Finished Bore
All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Hub Diameter

3.250 in

LTB

1.000 in

Style

B

No. Teeth

28

Finished Bore Diameter

0.875 in
Max. Bore1 2.250 in

Weight

2.500 lb

Tooth Nominal Width

0.284 in

Hardened Teeth 

Yes

Industry Equivalent

40BS28 7/8

UPC Code

097039325150

Chain Technical Data

Pitch

0.500 in

Chain Size

40

Sprocket Diameters

Outside Diameter

4.740 in

Pitch Diameter

4.465 in

Caliper Diameter

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