Steel 78A21 Sprocket

This 78A21 sprocket is a 21 tooth steel construction A-Plate style sprocket. This sprocket is in the 78 series of engineer class sprockets. It can be supplied with a stock plain bore, finished bore with key-way and set screws, or as an idler sprocket configuration. This sprocket will work with chain sizes H78, H74, H79, 188, R588, R778, 87R, IS881, 81X, 81XH, 81XHH/ 81XHD, 488, SS188, C188, and 882.

78A21 Dimensions

• Tooth Count: 21
• Style: A
• Pitch Diameter: 17.51"
• Stock Bore: 1.5"
• Plate Thickness: 0.875"
• Roller Diameter: 0.875"
• Sprocket Weight: 61.0 LBS

USA Roller Chain and Sprockets always strives to provide the industry leading service we are known for, as well as competitive and fair prices. Besides sprockets we also offer a full line of roller and engineer class chains, motors with gear reducers, v-belts, pulleys, and a wide variety of other industrial power transmission products. For more information or to get a quote on 78A21 sprockets or any other products, please contact our customer support team and we will be happy to assist you.