Max Motor Speed (RPM). Designed with sleeve bearings for low vibration. Features a 370-volt capacitor motor. Ideal to be used with 48 in. These motors install with all standard 48 in. They are a quiet operator and electrically reversible. There is an automatic thermal overload protector and they have class B insulation. The speed is 1075/3 and 60 Hz with low power consumption. The motor uses a 370-Volt Capacitor and has a standard 48 in. Frame motor casing size. There is a continuous duty, air over on this motor and the 2.5 in. In diameter hub rings are included. We offer the best prices around on high quality products. Our E-store includes tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help.