# How to adjust the rotation speed of DC gear motors?

1. The rotation speed of DC gear motor can be adjusted by yourself. If the gear motor is not DC gear motor, which the rotation speed can be adjusted by DC supply power with adjustable voltage function. The voltage of supply power high or low will affect the rotation speed of DC gear motor.
2. There are different of reduction speed with adjustment speed of DC gear motor. Adjusting rotation speed, which is changing the voltage of supply power or changing the parameters of drive circuit of DC motor, then to achieve the purpose of adjusting the rotation speed. But for reduction speed (in most cases), which is installed a gearbox with some gear ratio on the end of output shaft of motor, then to reduce the rotation speed, but at the same time increase torque.
3. DC motor is divided into brush motor and brushless motor, the former can be adjusted by changing the voltage of supply power; the voltage of the latter supply must be constant, and the rotation speed is adjusted by driver.
4. There are two kinds of drivers of brushless DC motor: built-in and built-out. For built-in type, which cannot be adjusted the rotation speed, but the rotation speed of built-out type can be adjusted or not, which depends on the internal structure of drive.
5. Magnetic DC motor is brush motor mostly. If rated operational voltage is 12v, you can use the 0~12v of DC stabilized power supply to power, and then the motor can be adjusted speed in stepless situation.

# The contrast between geared DC motor and geared AC motor

Geared DC motors can be defined as an extension of DC motor which already had its Insight details demystified. DC Motors convert electrical energy (voltage or power source) to mechanical energy (produce rotational motion). They run on direct current. The DC motor works on the principle of Lorentz force which states that when a wire carrying current is placed in a region having magnetic field, then the wire experiences a force. This Lorentz force provides a torque to the coil to rotate. A geared DC Motor has a gear assembly attached to the motor. The speed of motor is counted in terms of rotations of the shaft per minute and is termed as RPM. The gear assembly helps in increasing the torque and reducing the speed. Using the correct combination of gears in a gear motor, its speed can be reduced to any desirable figure. This concept where gears reduce the speed of the vehicle but increase its torque is known as gear reduction. This Insight will explore all the minor and major details that make the gear head and hence the working of geared DC motor.

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# What are the purposes of a gear reduction motor?

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.