50B21 7/8" Finished Bore Sprocket (50BS21H-7/8)

50BS21-7/8" Sprocket Description

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 7/8" 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 7/8" Sprocket Dimensions:

• Fits ANSI Chain Size:#50
• Bore (D1):7/8"
• Number Of Teeth:21
• Pitch Diameter (dp):4.193"
• Outside Diameter (de):4.521"
• Sprocket Thickness (B1):0.343"
• Hub Diameter (dm):3"
• LTB - Length Thru Bore (A):1"
• Keyway Size:3/16" X 3/32"
• Hardened Teeth:Yes (HRC 40-50)
• Number Of Setscrews:2
• Material:1045CD (Cold Drawn)
• Type Of Finish:Black Oxide

Interchange Numbers:

• 50BS21 7/8
• 50BS21H 7/8