Pololu HPCB micro motors with carbon brushes: a long term solution
The micro HPCB (High Power Carbon Brush) electric motors offered by Pololu are a twin product to the HP (High Power) series. This means that both series are characterized by high motor capabilities, but these HPCB products are distinguished by the use of a different type of material. The brushes are not made of precious metals, but of carbon fibre (carbon). This gives the engine much more reliability and longevity. These components are used by experienced engineers in projects where high reliability and long life are important. They are also an excellent solution for people who intend to use the same components for multiple projects, simply by reassembling them inside subsequent devices. It is very common for engineering students to buy durable components that can serve them throughout their studies for many tasks - this allows them to save significantly and work with high-end components. For example, a motor with well-chosen parameters will be able to prove itself as a drive for wheels in a mobile robot, and then act as a drive for a robotic arm.
What you will find in this category?
In our offer you will find DC motors with great possibilities. They are characterized by high performance (speed and force), but this is associated with higher energy consumption. It is therefore worth taking care of the appropriate power supply for such components. Motors in this category, depending on the model, require a power supply of 3 V to 12 V (the most common values are from 3 V to 9 V). During uniform, no-load operation, they consume a small amount of current, which also depends on their capabilities and the solutions used - usually 60 mA, 100 mA or 120 mA. When the motor is loaded (for example during start-up), it can consume even several times more current. For example, a motor with a torque of 1.6 kg*cm and a ratio of 75.81:1 needs 1600 mA when the shaft is stopped, while it consumes 120 mA during steady operation. The offered motors have a built-in gear ratio, which significantly extends their capabilities. Thanks to the appropriate design, the devices can lift much heavier loads (at the expense of reduced speed). In our assortment we have motors with gear ratios of 30:1, 50:1, 75:1, 150:1, 298:1, and even 1000:1. Torque also plays a very important role, which is an indicator of the actual capabilities of the motor. For example, a device with a torque of 1.1 kg*cm is able to lift a maximum weight of one kilogram suspended no more than 1 cm from the shaft axis. We offer devices with torques of 0.45 kg*cm, 0.6 kg*cm, 1.1 kg*cm, 1.6 kg*cm, 2.9 kg*cm, 5 kg*cm, 9 kg*cm. These motors are able to generate 32 rpm, 100 rpm, 200 rpm, 400 rpm, 625 rpm or even 1000 rpm (depending on the model). In this type of products, the weight and size of the components play a very important role, since they are most often used for small devices. All offered products do not exceed the weight of 10 g, the diameter of the shaft is 3 mm, the diameter of the whole is 12 mm and the length of the whole component is usually 24 mm. The exception are those motors, which are equipped with a double-sided shaft (then the value of the total length is already 26 mm). The double-sided shaft is actually an extension of the shaft to the other side of the motor, thanks to which the constructor is able to place an encoder on it (a device allowing to receive feedback directly from the effects of the motor).
