"The AmpFlow P40-250-P is a high-torque pancake-style motor designed to deliver good performance and efficiency at an economical price. This is achieved by the use of four brushes and advanced electromagnetic computer modeling and design.The motor is 4.0 inches in diameter and 3.2 inches long. The shaft rides in two high-quality ball bearings. The heavy-gauge motor leads are 14 inches long. The motor weighs 4.2 pounds, and it is finished in a high-quality black powder-coat.This reversible motor can be used at voltages ranging from 12V to 36Vdc. At 24 Volts, the no-load speed is 3400 RPM. The rated power output is 250W at 2800 RPM at 14 Amps. Peak efficiency is 78%.This motor is supplied with a 13-tooth pulley for 5 mm HTD beltAmpFlow® motors are used in diverse applications, including robots, electric scooters, electric bicycles, and other personal transport systems. Search Amazon for ""AmpFlow motors"" for more choices."