The “reduction” or gear ratio is calculated by dividing the number of teeth on the large gear by the number of teeth on the small gear. For example, if an electric motor drives a 13-tooth pinion gear that meshes with a 65-tooth gear, a reduction of 5:1 is achieved (65 / 13 = 5). If the electric motor speed is 1,500 rpm, the gearbox reduces this speed by five times to 300 rpm. If the motor torque is 10 lb-in, the gearbox increases this torque by a factor of five to 50 lb-in (before subtracting out gearbox efficiency losses).
Gear Reduction Motor is a gearbox that connects devices or drive machines. The main transmission structure is integrated and assembled by drive motor, shaft, and gearbox, which has the functions of connecting, transmission, deceleration, increase torque, and etc.
Principle of deceleration of gear reduction motor is to achieve the purpose of deceleration, which driving power of high-speed is from driving source to pass the power to output shaft of reducer by input shaft. Because the number of teeth of motor is more than gearbox, so the rotate speed is reduced, and the torque is increased. The main function of gear reduction motor is reducing the speed of motor, and increase torque by gear ratio.