DC motors
In DC motors, electrical energy from the voltage source is converted into mechanical energy. This in turn becomes the energy of continuous rotation. DC motors are widely used. They are used in household appliances, industrial automation systems, electric gates and many power tools. They also work well in robots, so it will be an excellent electric machine for your next project. We can distinguish several types of DC motors, which differ in the way they work, but also in their purpose. You will find them in our offer! These are DC motors with encoder, right angular gearbox and also gearless motors. Check our offer, compare parameters of individual models of DC motors and choose the one that best fits your project. With the DC motor, your robot will be set in motion, will carry out the commands given to it and carry out the tasks entrusted to it. Discover its potential!
Sub-micro DC Motor 136:1 500 RPM 0,6 kg*cm - Pololu 2358
Small, cylindrical, uncored motor with planetary gear 136:1 supplied with 3 - 6 V. Speed is 500 rpm, torque 0.6 kg*cm. External diameter is 6 mm, length 16 mm and total weight...HP Motor with 1000:1 Gear - Pololu 1595
Miniature high-power engine from Pololu company with gear, 1000:1, it has 32 rpm, the torque is 9.0 kg*cm (0,882 Nm).HP Motor with 120:1 Gear 150RPM - angular mini double sided shaft - Pololu 1520
Polol's small plastic motor with 120:1 gearbox , 150 rpm, torque is 1.8 kg*cm (0.17 Nm).10:1 Micro Metal Gearmotor HPCB 12V - Pololu 3037
Polol' s miniature high power engine with durable carbon brushes. It has a 10:1 transmission, speed is 3000 rpm, torque is 0.3 kg*cm (0.03 Nm).5:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft - Pololu 3082
Polol' s miniature high power engine with durable carbon brushes. It has a 5:1 transmission, speed is 6000 rpm, torque is 0.1 kg*cm (0.01 Nm). It has an extended shaft for...30:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft - Pololu 3049
Polol' s miniature high power engine with durable carbon brushes. It has a 30:1 transmission, speed is 1000 rpm, torque is 0.6 kg*cm (0.006 Nm). It has an extended shaft...DC Motor 37Dx73L with 131:1 Gear 12V 76RPM + encoder CPR 64 - Pololu 4756
A high power Polol engine with a 131:1 gearbox. Its speed is 76 rpm and its torque is 45 kg*cm (4. 41 Nm). It is equipped with a quadrature encoder with a resolution of...298:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft - Pololu 3056
Polol' s miniature high power engine with durable carbon brushes. It has a 298:1 gearbox, speed is 100 rpm and torque is 5 kg*cm (0.49 Nm). It has an extended shaft for...25Dx48L Motor with 4:4:1 Gear 12V 1700RPM - Pololu 3225
An engine created by Polol with a 4 :4:1 gearbox. The torque of this engine is 0 .8 kg*cm and the speed is 200 rpm. The product is powered by 12 V , its current...MP Motor with 100:1 Gear - doublesided shaft - Pololu 2381
Polol's miniature 100:1 medium-power motor with 220 rpm, torque is 1.4 kg*cm (0.13 Nm). It has an extended shaft for mounting speed sensors.MP Motor with 30:1 Gear - Pololu 2364
A miniature Polol's 30:1 medium-power motor with a gearbox, 730 rpm, 0.6 kg*cm (0.05 Nm) torque.HPCB Motor with 30:1 Gear - Pololu 3062
Polol' s miniature high power engine with durable carbon brushes. It has a 30:1 transmission, speed is 1000 rpm, torque is 0.6 kg*cm (0.059 Nm).HPCB Motor with 75:1 Gear - Pololu 3064
Polol' s miniature high power engine with durable carbon brushes. It has a 75:1 transmission, speed is 400 rpm, and torque is 1.6 kg*cm (0.15 Nm).HPCB Motor with 1000:1 Gear - Pololu 3070
Polol' s miniature high power engine with durable carbon brushes. It has a 1000:1 gearbox, speed is 32 rpm, and torque is 9.0 kg*cm (0.89 Nm).HPCB Motor with 10:1 Gear - Pololu 3061
Polol' s miniature high power engine with durable carbon brushes. It has a 10:1 transmission, speed is 3000 rpm, torque is 0.3 kg*cm (0.029 Nm).HPCB Motor with 30:1 Gear - doublesided shaft - Pololu 3072
Polol' s miniature high power engine with durable carbon brushes. It has a 30:1 transmission, speed is 1000 rpm , torque is 0.45 kg*cm (0.044 Nm). It has an extended...HPCB Motor with 100:1 Gear - doublesided shaft - Pololu 3075
Polol' s miniature high power engine with durable carbon brushes. It has 100:1 transmissions, 320 rpm , and 2.2 kg*cm (0.21 Nm) torque. It has an extended shaft for...HPCB Motor with 150:1 Gear - doublesided shaft - Pololu 3076
Polol' s miniature high power engine with durable carbon brushes. It has a 150:1 gearbox, 200 rpm , and 2.9 kg*cm (0.28 Nm) torque. It has an extended shaft for mounting...HPCB Motor with 250:1 Gear - doublesided shaft - Pololu 3078
Polol' s miniature high power engine with durable carbon brushes. It has 250:1 transmissions, 120 rpm , and 4.3 kg*cm (0.42 Nm) torque. It has an extended shaft for...HPCB Motor with 1000:1 Gear - doublesided shaft - Pololu 3080
Polol' s miniature high power engine with durable carbon brushes. It has a 1000:1 gearbox, speed is 32 rpm , and torque is 9.0 kg*cm (0.89 Nm). It has an extended shaft...HPCB Motor with 50:1 Gear - doublesided shaft - Pololu 3073
Polol' s miniature high power engine with durable carbon brushes. It has a 50:1 gearbox, speed is 625 rpm , and torque is 1.1 kg*cm (0.1 Nm). It has an extended shaft...Turbo Metal Gear Worm Motor (6V 40RPM 10kg/cm)
Metal worm gear motor for strength and high torque of 10 kg*cm (1 Nm). Supply voltage is 6V and speed is 40 rpm.5:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft - Pololu 3047
Polol' s miniature high power engine with durable carbon brushes. It has a 5:1 transmission, speed is 6000 rpm, torque is 0.1 kg*cm (0.01 Nm). It has an extended shaft for...Micro motor N20-BT20 30:1 730RPM - 9V
Miniature 30:1 Gearmotor N20 series, 730 rpm, torque is 0.6 kg*cm (0.059 Nm). Supply voltage ranges from 3 V to 9 V.Principle of the DC motor
DC motors are made of many elements, including permanent magnets. They are arranged in a stator and winding, which is connected to a packet of copper sheets, forming a rotor. These are the basic components of a DC motor. The rotor must be set in motion, which is done by means of carbon brushes, which have direct contact with the commutator. The current can only flow when the rotor winding is energized. The current produces a magnetic field which sets the rotor in motion. The rotation is maintained in a continuous, unchanging motion, which takes place in one direction by reversing the direction of the magnetic field generated in the circumference of the rotor. This is how the DC motor works and thus sets the specific elements of a device, equipment, machine or system in motion. The whole process is very effective and efficient. High quality DC motors, on the other hand, are characterized by high reliability and long service life. For these reasons they are so popular.
How to choose a DC motor?
We can choose from several types of DC motors, among which there is a commutator motor characterized by a simple design and already known to the electronic industry technology. They are also available at an attractive price, which also makes them a popular choice for robotics and electronics projects. Due to their good quality of work they are also used by professionals. We can supply DC motors with voltage, which comes from the mains adapter or battery. The speed depends on the voltage, it will be higher with a similarly higher voltage. If we reverse the polarity of the battery or power supply, the direction of rotation of the motor will change. The PWM controller is designed to regulate the full range of motor rotation, and it is worth to decide on it if it is necessary to regulate the motor rotation during operation.
When choosing a DC motor, you need to take into account a few key parameters that determine its functionality and proper fit to the project. Very important is the power supply voltage, which must not be too low, because it will prevent the motor from starting. If it is too high, it can damage the rotor or stator. If we increase the load on the motor shaft, an additional heatsink should be used. Its task is to increase the heat dissipation area. When purchasing, also pay attention to the motor speed, which is always adjusted to the design parameters of the robot or machine. The higher the speed, the higher the efficiency of the engine. We will reduce the engine speed by adding gears. You need to know that the torque determines the acceleration of the engine. Moreover, the possibilities and area of use of the robot, machine or device depend on it, so it plays such an important role.