Pololu micro engines HP - High Power

Pololu High Power micro motors - what they are good for

Pololu motors are a popular product among students of technical universities. They provide an excellent basis for building various robots. The equipment is characterised by very high durability and strict compliance with the parameters declared by the producer. Thanks to this, such parts can perform excellently in many different projects without the need to buy more parts. The High Power series is characterised by greater capabilities than those offered by the Medium Power and Low Power series - this means that the presented motors offer a higher number of revolutions, higher torque and a better gear ratio. This means that they are "stronger" (for example, they will be able to lift more weight) and faster. They will be suitable for larger robot designs, for example, or for projects that require better device performance. A mobile robot will be able to move heavier weights (for example, a TIR model) or reach higher speeds (for example, a racing car model). The robot arm will be able to move faster and lift heavier weights. It is worth noting, however, that such advantages also entail greater energy requirements for the motor. This means that a device that will be equipped with this type of motor will need a larger battery (primarily with a larger capacity). Of course, such decisions depend on the individual assumptions of each project.

What we offer in this category

In our offer you will find equipment powered from 3 V to 9 V. Motors draw different amounts of current depending on the current load and whether they are already in motion. More current will be needed at higher loads and during start-up, while the smallest values will be needed during constant movement with as little load as possible. Each product has a detailed description that distinguishes between the different cases. For example, a motor with a gear ratio of 30:1 and a torque of 0.6 kg*cm will be able to achieve 1000 revolutions per minute with no load, using 120 mA, while with the shaft stopped it will need to use 1600 mA. We have motors that draw about 70 mA, 80 mA and 120 mA without load. The gear ratio is the decisive parameter for this type of device. It is not possible to determine which option is better or worse - such a distinction can only be applied to specific projects. The gearbox determines what speed the motor shaft will be able to reach and what force it will have at its disposal. On one scale is torque (force) and on the other speed - taking away one, the other is added. We have motors with gear ratios of 5:1, 10:1, 15:1, 30:1, 50:1, 75:1, 100:1, 150:1, 210:1, 250:1, 298:1 and even 1000:1. The final torque depends on the motor parameters. For example, based on the information that the motor torque is 1.6 kg*cm, it can be deduced that the limit value of the force available to the motor is compared to a weight of 1.6 kg suspended at a distance of one centimetre from the shaft centreline - with such a load the motor could still operate. Placing a larger weight or increasing the distance from the motor shaft would prevent it from running. We offer devices with torque values of 0.1 kg*cm, 0.22 kg*cm, 0.3 kg*cm, 0.6 kg*cm, 1.1 kg*cm, 1.6 kg*cm, 2.2 kg*cm, 2.9 kg*cm, 3.4 kg*cm, 3.6 kg*cm, 4.3 kg*cm, 5 kg*cm and even 9 kg*cm. Declared maximum product speeds (at no load) are: 32 rpm, 100 rpm, 120 rpm, 140 rpm, 200 rpm, 320 rpm, 400 rpm, 630 rpm, 1000 rpm, 2000 rpm, 3000 rpm, 6000 rpm. Such motors are always the smallest possible components - the diameter of each is equal to 12 mm, they weigh 10 g each, depending on the model the length is 24 mm, 26 mm or 30 mm, and the shaft diameters are 3 mm or 4.5 mm. Some of them have a specially placed second shaft at the opposite end of the motor - this is to provide a base for the encoder to be placed there. This will allow the actual measurement of the speed of the motor shaft. Using, for example, a magnetic encoder in this place (placing a magnet at the end of the measuring shaft), it is possible to implement PID control of the motor speed (for this purpose an H-bridge would also be necessary - also offered by Pololu).