Electrical 4000 Rpm 23W DC 36 Volt Brushless Motor With CE ROHS
3 Phase Dc Motor JK57BLS005 Brushless DC Motor Electrical 4000 Rpm 36V 23W With CE ROHS
Why Do BLDC Motors Turn?
As their name implies, brushless DC motors do not use brushes. With brushed motors, the brushes deliver current through the commutator into the coils on the rotor. So how does a brushless motor pass current to the rotor coils? It doesn’t—because the coils are not located on the rotor. Instead, the rotor is a permanent magnet; the coils do not rotate, but are instead fixed in place on the stator. Because the coils do not move, there is no need for brushes and a commutator.
With the brushed motor, rotation is achieved by controlling the magnetic fields generated by the coils on the rotor, while the magnetic field generated by the stationary magnets remains fixed. To change the rotation speed, you change the voltage for the coils. With a BLDC motor, it is the permanent magnet that rotates; rotation is achieved by changing the direction of the magnetic fields generated by the surrounding stationary coils. To control the rotation, you adjust the magnitude and direction of the current into these coils.
Specification of Brushless DC motor
| Model | |||
| Specification | Unit | JK57BLS005 | JK57BLS01 |
| Number Of Phase | Phase | 3 | |
| Number Of Poles | Poles | 4 | |
| Rated Voltage | VDC | 36 | |
| Rated Speed | Rpm | 4000 | |
| Rated Torque | N.m | 0.055 | 0.11 |
| Rated Current | Amps | 1.2 | 2 |
| Rated Power | W | 23 | 46 |
| Peak Torque | N.m | 0.16 | 0.33 |
| Peak Current | Amps | 3.5 | 6.8 |
| Back E.M.F | V/Krpm | 7.8 | 7.7 |
| Torque Constant | N.m/A | 0.074 | 0.073 |
| Rotor Inertia | g.c㎡ | 30 | 75 |
| Body Length | mm | 37 | 47 |
| Weight | Kg | 0.33 | 0.44 |
| Sensor | Honeywell | ||
| Insulation Class | B | ||
| Degree of Protection | IP30 | ||
| Storage Temperature | -25～+70℃ | ||
| Operating Temperature | -15～+50℃ | ||
| Working Humidity | 85% or under 85% RH(non condensing) | ||
| Working Environment | outdoor(no direct sunlight),Non-corrosive Gas, Non-inflammable gas, No oil fog, No dust |
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| Altitude | 1000m or under 1000m | ||
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Toward Wider Usage in the Future
We can expect to see BLDC motors used in a wider range of applications in the future. For example, they will probably be widely used to drive service robots—small robots that deliver services in fields other than manufacturing. One might think that stepper motors would be more suitable in this type of application, where pulses could be used to precisely control positioning. But BLDC motors are better suited to controlling the force. And with a stepper motor, holding the position of a structure such as a robot arm would require a relatively large and continuous current. With a BLDC motor, all that would be required is a current proportionate to the external force—allowing for more power-efficient control. BLDC motors may also be replacing simple brushed dc motors in golf carts and mobility carts. In addition to their better efficiency, BLDC motors can also deliver more precise control—which in turn can further extend battery life.
BLDC motors are also ideal for drones. Their ability to deliver precision control makes them especially suited for multirotor drones, where the drone’s attitude is controlled by precisely controlling the rotational speed of each rotor.
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