Browning D40B72 Double Roller Chain Sprocket Hub B

The Browning D40B72 Double Roller Chain Sprocket, Type B, is a heavy-duty double-strand sprocket designed for No. 40 roller chain. It features 72 teeth and a 1/2-inch pitch, delivering robust engagement for power transmission in demanding machinery. The sprocket’s outside diameter is 11.75 inches (11.752 in), with a hub diameter of 4.25 inches, and a through bore length of 2.125 inches; the bore range spans 1-3/16 to 2-3/4 inches to fit a variety of shaft sizes, and the hub is solid and reboreable for precise alignment. Constructed from steel, this double sprocket is intended for use in power transmission configurations that require a Type B hub and a reboreable bore interface—typical applications involve dual-drive systems in industrial equipment that run No. 40 chain where high strength and long life are important.