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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

Bore Diameter_SYN

 N/A 0.500 in

Hub Diameter_SYN

 N/A 1.563 in

LTB

 N/A 0.875 in

Sprocket Style_SYN

 N/A B

Number of Teeth_SYN

 N/A 12

Outside Diameter_SYN

 N/A 2.170 in

Pitch Diameter_SYN

 N/A 1.932 in

Caliper Diameter

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

Weight_SYN

 N/A 0.450 lb

Tooth Width_SYN

 N/A 0.284 in

Hardened Teeth 

 N/A Yes

UPC Code

 N/A 097039314710

Chain Technical Data

Chain Pitch_SYN

 N/A 0.500 in

Chain Number_SYN

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