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

40A18 Type "A" Plate Sprocket 5/8" Stock Bore

Item ID: 40A18
Availability: 127 In Stock
Price: $6.20
Retail Price:$8.20
Your Savings:$2.00(24%)

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Nitro 40A18 Sprocket - Type A Plate Sprocket

40A18 sprockets are a ANSI standard size that has 18 teeth and works with #40 roller chain. These sprockets are known as a "Type A", which is a hubless roller chain sprocket. Our 40A18 plate sprockets are a durable, high strength sprocket that is manufactured from 1045CD carbon steel. After manufacturing, the teeth are hardened to help minimize wear, then a black oxide finish is applied for corrosion resistance.

40A18 sprocket diagram
40A18 Sprocket Dimensions:
  • Fits ANSI Chain Size: #40
  • Number Of Teeth: 18
  • Bore (D1): 5/8"
  • Pitch Diameter (dp): 2.879"
  • Outside Diameter (de): 3.136"
  • Sprocket Thickness (B1): 0.284"
  • Material: 1045CD (Cold Drawn)
  • Hardened Teeth: Yes (30-45 Rc)
  • Type Of Finish: Black Oxide
Interchange Numbers
  • 40A18H