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50B21 1-1/4
Picture may not depict actual tooth count

50B21 1-1/4" Finished Bore Sprocket (50BS21H-1-1/4)

Item ID: 50B21-1-1/4
Availability: 31 In Stock Nitro 50B21-1-1/4
Price: $15.85

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Nitro 50B21-1-1/4 Finished Bore Sprocket

Our 50BS21H sprockets are manufactured to conform to the ANSI standards for chain & sprockets. This sprocket is a 21 tooth sprocket that is compatible with ANSI #50 roller chain. The 50BS21 1-1/4" sprocket is a finished bore style that has a standard keyway & 2 setscrews. Our sprocket teeth are hardened to help prevent tooth wear. A black oxide finish is applied to the sprocket for corrosion resistance.

50B21 sprocket diagram
50BS21 1-1/4" Sprocket Dimensions:
  • Fits ANSI Chain Size: #50
  • Bore (D1): 1-1/4"
  • Number Of Teeth:21
  • Outside Diameter (de): 4.521"
  • Sprocket Thickness (B1): 0.343" (Not including Hub)
  • Hub Diameter (dm): 3"
  • LTB - Length Thru Bore (A): 1"
  • 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:
  • 50BS21 1-1/4
  • 50BS21H 1-1/4

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