Key Features Build to Last: It is made of high-quality aluminum alloy and 40cr alloy steel, together with tempering treatment, fine finish, and nitrogen treatment, making this product hard, tough, and resistant to corrosion and rust. Superior Performance: All metal gears, double ball bearings, and pure copper coils can reduce friction and temperature during use to ensure stable operation. High-quality double-ball bearings can reduce the friction between the rollers and bearings, resulting in higher rotational speeds, less overheating, and higher load resistance. Wide Compatability: With a compact size(3.54*3.54*9.84 inches), 25NM torque, and reversible function, the motor suits various fields and machines. Speed Control Unit: It comes with one knob and two modes of speed adjustment for meeting your different demands. One type of speed adjustment is at the scale of 10-90%, where each scale represents 10% of the speed. The other is an infinite adjustment at the scale of "HIGH", "RUN" and "LOW", achieving accuracy speed control. Application It is suitable for various industries such as packaging, printing, food, textile, and engineering machinery, and different machines and production lines such as CNC equipment, mechanical equipment, grinding machines, milling machines, printing machines, production workshops, and assembly lines. Specifications Color: Grey Reversible: Yes Assembly Required: No Model: M120A-502 Motor Type: Pure Copper Wire Material: Aluminum Alloy, 40cr Alloy Steel Process: Tempering Treatment, Fine Finish, Nitrogen Treatment Reduction Ratio: 1: 80(80K) Motor Speed: 50Hz: 90-1350r/min, 60Hz: 90-1650r/min No-load Speed: 1350r/min Rated Torque: 25NM Shaft Bore Diameter: 14mm/0.55inch Capacitance: 6μF Power: 120W Voltage: 220V Total Length of Wire: About 1m/3.28ft Motor Size: 9*9*25cm/3.54*3.54*9.84inch Speed Control Unit Size: 6*10*9cm/2.4*3.9*3.5inch Packaging Size: 28.5*24*12.5cm/11.22*9.45*4.92inch Gross Weight: 6kg/13.23lbs Package Included 1* Gear Reducer Motor 1* Speed Controller Notes 1.Please check the size carefully before ordering. 2.Please connect each wire correctly to ensure that the machine can operate normally. 3.Based on industry standards, to meet the different needs of customers, please note that our motors do not include power cords. 4.Please note that the output shaft speed varies at different reduction ratios. The output shaft speed is equal to the motor speed divided by the reduction ratio. 5.Please note that the gearbox has been greased, but you need to refill it yourself after about 100 hours of use. 6.If the motor is lightly loaded and not running for a long period, the controller can be adjusted to 50% of full speed. When the motor is loaded and working continuously for a long time. The controller should not go below 70% of full speed. Because the motor is decelerated by voltage reduction, the torque will also become smaller after voltage reduction and may be overloaded. At this time, due to the increase of current, the heat dissipation will become worse, and the motor will also heat up seriously.