The Tsubaki 1143 is a genuine Tsubaki Type B sprocket designed for use with #50 ANSI roller chains. This durable sprocket features 27 teeth and a 5/8 inch (15.875 mm) pitch. It has a bore diameter of 31.75 mm (1-1/4 inches), an outside diameter of 142.494 mm (5.610 inches), and a hub diameter of 88.9 mm (3.500 inches). The length through the bore is 31.75 mm (1.250 inches), and it weighs approximately 1.59 kg (3.5 lbs). This high-quality sprocket is suitable for various industrial and agricultural power transmission applications requiring reliable performance.