50B21 3/4" Finished Bore Sprocket (50BS21H-3/4)

Nitro 50B21-3/4 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 3/4" 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.

50BS21 3/4" Sprocket Dimensions:

• Fits ANSI Chain Size: #50
• Bore (D1): 3/4"
• 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: 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:

• 50BS21 3/4
• 50BS21H 3/4