To choose the right BLDC motor, assess the required torque (e.g., 10 Nm), power (e.g., 2000 watts), and the optimal efficiency (e.g., 90%) for your specific application.

Voltage levels are essential because they specify what kind of power supply would be compatible with the motor. For example, BLDC motors can range widely in their voltage specs from relatively low-voltage devices of 12V or 24V, which are typical of bats supply for the portable tools, to 48V for more powerful portable tools and even up to 310V for industrial appliances. Thus, the first consideration is to ensure that the motor chosen will have the voltage required for the application with a level of safety. For instance, in the case of the robotic arm, the 24V motor will be safe and compatible with the standard controller available on the market.

Calculating the power demand is important because it directly affects both torque and speed – in other words, how much weight the arm can lift and how fast, it can sweep. For example, the conveyor lifts a load of 100 kg with the speed of 1 meter per second, one has to ensure that the motor will be able to provide the necessary torque.

When choosing the motor, it is also important to consider how different subject will do in the conditions of increased loads, and if those are present occasionally, the motor should not go the extremes. Thus, it would be wise to choose the BLDC motor from a reliant manufacturer.