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

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.

50B21 3/4" Sprocket Dimensions

• ANSI Chain Size:50
• Bore:3/4''
• Tooth Count:21
• Pitch Diameter (dp):4.193''
• Outside Diameter (de):4.521''
• Sprocket Thickness (B1):0.343''
• Hub Diameter (dm):3''
• Length Thru Bore (LTB):1''
• Keyway Size:3/16'' X 3/32''
• Material:1045CD
• Hardened Teeth:Yes (HRC 40-50)
• No. Of Setscrews:2
• Type Of Finish:Black Oxide