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[China]
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Address: Building A2,Hutang Industrial zone,Lingdao Rd,Wujin District,Changzhou,China.Zip:213162
Contact name:Annie
CHANGZHOU JKONGMOTOR CO.,LTD |
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57mm 36V 4000RPM Brushless Dc Gear Motor 138W 150W With Gearbox Ratio 3:1 - 100:1
BLDC motors offer high efficiency and controllability, and that they have a long operating life. They are widely used in devices that run continuously. They have long been used in washing machines, air conditioners, and other consumer electronics; and more recently, they are appearing in fans, where their high efficiency has contributed to a significant reduction in power consumption.
Genaral Specification:
| Item | Specification |
| Winding type | Star |
| Hall effect angle | 120 degree electrical angle |
| Shaft run out | 0.025mm |
| Radial play | 0.02mm＠450g |
| End play | 0.08mm＠450g |
| Max.radial force | 75N ＠20mm form the flange |
| Max.axial force | 15N |
| Insulation class | Class B |
| Dielectric strength | 500VDC for one minute |
| Insulation resistance | 100MΩ Min.,500VDC |
Electrical Specification:
| Model | ||
| Specification | Unit | JK57BLS03 |
| Number Of Phase | Phase | 3 |
| Number Of Poles | Poles | 4 |
| Rated Voltage | VDC | 36 |
| Rated Speed | Rpm | 4000 |
| Rated Torque | N.m | 0.33 |
| Rated Current | Amps | 5.3 |
| Rated Power | W | 138 |
| Peak Torque | N.m | 1 |
| Peak Current | Amps | 15.5 |
| Back E.M.F | V/Krpm | 7.3 |
| Torque Constant | N.m/A | 0.07 |
| Rotor Inertia | g.c㎡ | 173 |
| Body Length | mm | 87 |
| Weight | Kg | 1 |
| Sensor | Honeywell | |
Gearbox Electrical Specification:
| Reduction ratio | 3 | 5 | 7.5 | 10 | 15 | 18 | 20 | 25 | 30 | 50 | 60 | 75 | 100 | 120 | 150 | 200 |
| Number of geartrains | 1 | 2 | 3 | |||||||||||||
| Rated torque | 3 N.m | |||||||||||||||
| Peak torque | 5 N.m | |||||||||||||||
| length(mm) | 32 & 41 | 41 | ||||||||||||||
Products of special request can be made according to the customer request !
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.
