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40A18/1.9

40A sprocket from Rolcon40A sprocket from Rolcon

40A18 sprockets are an ANSI standard size that has 18 teeth and works with #40 roller chain. These sprockets are known as a “Type A”, which is a hub less 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. Bored for 1.9 diameter tube.

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Fits ANSI Chain Size: #40
Number of Teeth: 18
Bore (D1): 1.910
Pitch Diameter (dp): 2.87
Outside Diameter (de): 3.13
Material: 1045CD (Cold Drawn)
Hardened Teeth: Yes (HRC 40-50)
Type of Finish: Black Oxide
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