Reduction Gear Motor AC 220V 200W High Power Reversible 7.5RPM-450RPM industry. Motor Model : 220W Reducer Gear Motor. Working principle: AC gear reduction induction motor. Power phase number: Single-phase motor.This series of motors plus a governor can adjust the speed. The speed range is 10-100% of the maximum speed after mechanical deceleration. When the speed is reduced, the output power and speed of the motor will decrease in direct proportion. Than, then consider using a governor to fine-tune the slower use. Package include: According to your choice.