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No. 40, B Style, .500" plain bore
Has recessed groove in hub for chain clearance
Consult U.S. Tsubaki for availability of No. 41 Plain Bore Sprockets.

All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Stock Bore Diameter

 N/A 0.500 in

Hub Diameter

 N/A 1.563 in

LTB

 N/A 0.875 in

Style

 N/A B

No. Teeth

 N/A 12

Outside Diameter

 N/A 2.170 in

Pitch Diameter

 N/A 1.932 in

Caliper Diameter

 N/A 1.620 in
Max. Bore1 N/A 1.000 in

Weight

 N/A 0.450 lb

Tooth Nominal Width

 N/A 0.284 in

Hardened Teeth 

 N/A Yes

UPC Code

 N/A 097039314710

Chain Technical Data

Pitch

 N/A 0.500 in

Chain Size

 N/A 40
  • 1 Dimensions shown allow for standard keyway with set screw at 90°