3000rpm 440W 11.5A 1.4N.m brushless or brushed electric dc motors

Brush DC motors have various advantages such as high efficiency, potential to downsize, ability to run on electric power, and low manufacturing costs. However, these motors have a number of disadvantages such as noise due to brush friction, generation of sparks and electrical noise, and limited life due to brush wear. Development of the brushless DC motor has solved all these problems.

Electrical specifications of 48V brushless dc motor:

Note:products of special request can be made according to the customer request.

Dimensions of 86mm brushless dc motors:

Photos of 440W 1.4N.m bldc motor:

Advantages of BLDC Motors:

A BLDC motor with three coils on the stator will have six electrical wires (two to each coil) extending from these coils. In most implementations three of these wires will be connected internally, with the three remaining wires extending from the motor body (in contrast to the two wires extending from the brushed motor described earlier). Wiring in the BLDC motor case is more complicated than simply connecting the power cell’s positive and negative terminals; we will look more closely at how these motors work in the second session of this series. Below, we conclude by looking at the advantages of by BLDC motors.

One big advantage is efficiency, as these motors can control continuously at maximum rotational force (torque). Brushed motors, in contrast, reach maximum torque at only certain points in the rotation. For a brushed motor to deliver the same torque as a brushless model, it would need to use larger magnets. This is why even small BLDC motors can deliver considerable power.

The second big advantage—related to the first—is controllability. BLDC motors can be controlled, using feedback mechanisms, to delivery precisely the desired torque and rotation speed. Precision control in turn reduces energy consumption and heat generation, and—in cases where motors are battery powered—lengthens the battery life.

BLDC motors also offer high durability and low electric noise generation, thanks to the lack of brushes. With brushed motors, the brushes and commutator wear down as a result of continuous moving contact, and also produce sparks where contact is made. Electrical noise, in particular, is the result of the strong sparks that tend to occur at the areas where the brushes pass over the gaps in the commutator. This is why BLDC motors are often considered preferable in applications where it is important to avoid electrical noise.