The Sumitomo SM-Cyclo Reducer featured in the listing has a nominal ratio of 87:1 and is designed for mechanical power transmission applications. With a power rating of 3.86HP and operating at 1165RPM, this gearbox is suitable for industrial automation and motion control systems. Manufactured by Sumitomo, a trusted brand in the industry, this Cyclo Reducer offers reliable and efficient performance in various business and industrial settings.