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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!

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20Dx44L Motor with 156:1 Gear 6V 90 RPM - Pololu 3456

Polol's 156:1 gearbox motor generates 90 rpm, torque is 8 kg*cm (0.79 Nm). Powered by 6 V, average current consumption is approximately 200 mA (max. 3200 mA).
Index: PLL-08549
Index: PLL-08549
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25Dx56L Motor with 227:1 Gear 6V 25RPM - Pololu 1589

Polol's 227:1 gearbox motor generates 25 rpm, torque is 15.8 kg*cm (1.5 Nm). Powered by 6 V, average current consumption is approximately 80 mA (2200 mA max).
Index: PLL-04028
Index: PLL-04028
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25Dx58L Motor with 378:1 Gear 6V 15RPM - Pololu 1590

Polol's 378:1 gearbox engine generates 15 rpm, 18 kg*cm (1.7 Nm) torque. Powered by 6 V, the average current consumption is approximately 80 mA (2200 mA max).
Index: PLL-04027
Index: PLL-04027
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Regular price PLN79.50 Price PLN79.50

Micro motor N20-BT02 5:1 4000RPM - 12V

Miniature N20 Series motor with 5:1 gearbox, 4000 rpm, 0.1 kg*cm (0.0098 Nm) torque. Supply voltage ranges from 3V to 12V.
Index: DNG-12542
Index: DNG-12542
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Regular price PLN19.90 Price PLN19.90

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.
Index: PLL-04051
Index: PLL-04051
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Regular price PLN67.90 Price PLN67.90

Micro motor N20-BT12 10:1 1300RPM - 9V

Miniature 10:1 Geared N20 motor, 1300 rpm, 0.14 kg*cm (0.014 Nm) torque. Supply voltage ranges from 3 V to 9 V.
Index: DNG-12551
Index: DNG-12551
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Micro motor N20-BT13 10:1 2200RPM - 9V

Miniature N20 Series motor with 10:1 gearbox, 2200 rpm, torque is 0.2 kg*cm (0.02 Nm). Supply voltage ranges from 3 V to 9 V.
Index: DNG-12552
Index: DNG-12552
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Micro motor N20-BT14 30:1 440RPM - 9V

Miniature N20 Series motor with 30:1 gearbox, 440 rpm, 0.28 kg*cm (0.0275 Nm) torque. Power supply voltage ranges from 3 V to 9 V.
Index: DNG-12553
Index: DNG-12553
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25Dx56L Motor with 172:1 Gear 6V 33RPM - Pololu 1588

Polol's 172:1 Gearmotor generates 33 rpm, torque is 12.2 kg*cm (1.19 Nm). Powered by 6 V, the average current consumption is approximately 80 mA (2200 mA max).
Index: PLL-03482
Index: PLL-03482
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Regular price PLN81.90 Price PLN81.90

GPX Extreme Swift 400 Motor - 6,0V

Metal motor powered from 3.6 V to 8.6 V. Idle current 770 mA. Dimensions: 57 x 28 mm. Torque is 0.45 kg*cm (0.04 Nm).
Index: MOT-07303
Index: MOT-07303
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Regular price PLN39.90 Price PLN39.90

20Dx44L Motor with 100:1 Gear 6V 140 RPM Extended Motor Shaft - Pololu 3466

Polol's 100:1 gearbox motor generates 140 rpm, torque is 6.5 kg*cm (0.64 Nm). Powered by 6 V, average current consumption is approximately 200 mA (max. 3200 mA). It has an...
Index: PLL-08253
Index: PLL-08253
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Regular price PLN86.00 Price PLN86.00

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).
Index: PLL-06869
Index: PLL-06869
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Regular price PLN78.00 Price PLN78.00

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...
Index: PLL-06866
Index: PLL-06866
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Regular price PLN72.00 Price PLN72.00

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...
Index: PLL-05988
Index: PLL-05988
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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...
Index: PLL-05099
Index: PLL-05099
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Regular price PLN74.90 Price PLN74.90

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...
Index: PLL-05093
Index: PLL-05093
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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).
Index: PLL-04973
Index: PLL-04973
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Regular price PLN71.50 Price PLN71.50

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).
Index: PLL-04199
Index: PLL-04199
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Regular price PLN95.00 Price PLN95.00

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).
Index: PLL-04196
Index: PLL-04196
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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).
Index: PLL-04195
Index: PLL-04195
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120:1 Mini Plastic Gearmotor, Offset 3mm D-Shaft Output - Pololu 1125

Small plastic motor with 120:1, 120 rpm, torque 1.4 kg*cm (0.137 Nm). Has an offset equal to 3 mm. The motor can be an alternative to Polol micro motors.
Index: PLL-07190
Index: PLL-07190
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Regular price PLN23.50 Price PLN23.50

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...
Index: PLL-06876
Index: PLL-06876
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50:1 Micro Metal Gearmotor HPCB 12V - Pololu 3039

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).
Index: PLL-07984
Index: PLL-07984
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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...
Index: PLL-05095
Index: PLL-05095
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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.