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Picture may not depict actual tooth count
Picture may not depict actual tooth count

40B12 1" Finished Bore Sprocket (40BS12H-1)

Item ID: 40B12-1
Availability: 572 In Stock
Incoming Stock: 300
Price: $7.32
Retail Price:$9.50
Your Savings:$2.18(23%)

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40B12-1 Finished Bore Sprocket - 40BS12H 1"

Our 40BS12H sprocket is an ANSI standard size sprocket with a 1" finished bore - includes keyway & 2 setscrews. This 11 tooth sprocket works with any ANSI #40 roller chain. Nitro 40B12 sprockets are manufactured from 1045CD carbon steel and have hardened teeth to minimize wear overtime.

40B12 sprocket diagram
40BS12 Sprocket Dimensions:
  • Fits ANSI Chain Size: #40
  • Bore (D1): 1"
  • Number Of Teeth:12
  • Pitch Diameter (dp): 1.932"
  • Outside Diameter (de): 2.166"
  • Sprocket Thickness (B1): 0.284" (Not including Hub)
  • Hub Diameter (dm): 1-9/16"
  • LTB - Length Thru Bore (A): 7/8"
  • Keyway Size: 1/4" X 1/8"
  • Hardened Teeth: Yes (HRC 38-42)
  • Number Of Setscrews: 2
  • Material: 1045CD (Cold Drawn)
  • Type Of Finish: Black Oxide
Interchange Numbers:
  • 40BS12 1
  • 40BS12H 1