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

40B18 7/8" Finished Bore Sprocket (40BS18H-7/8)

Item ID: 40B18-7/8
Availability: 34 In Stock
Price: $11.95
Retail Price:$15.51
Your Savings:$3.56(23%)

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Nitro 40B18-7/8 Finished Bore Sprocket

Our 40BS18H sprocket is an ANSI standard sprocket with a 7/8" finished bore that has a keyway & 2 setscrews. 40BS18 sprockets are an 18 tooth sprocket that works with ANSI #40 roller chain. These sprockets are manufactured from 1045CD carbon steel material. The sprocket teeth are hardened for increased wear resistance.

40B18 sprocket diagram
40BS18 7/8" Sprocket Dimensions:
  • Fits ANSI Chain Size: #40
  • Bore (D1): 7/8"
  • Number Of Teeth: 18
  • Outside Diameter (de): 3.136"
  • Sprocket Thickness (B1): 0.284" (Not including Hub)
  • Hub Diameter (dm): 2-5/16"
  • LTB - Length Thru Bore (A): 1"
  • Keyway Size: 3/16" X 3/32"
  • Hardened Teeth: Yes (HRC 38-42)
  • Number Of Setscrews: 2
  • Material: 1045CD (Cold Drawn)
  • Type Of Finish: Black Oxide
Interchange Numbers:
  • 40BS18 7/8
  • 40BS18H 7/8