CHANGZHOU JKONGMOTOR CO.,LTD
Changzhou Jkongmotor Co., Ltd. Professional Stepper & Bldc Motor Manufacture in China with 15+ Years Experience. Certification: CE Rohs Reach ISO9001 ISO14001
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NEMA17 42mm Brushless Dc Motor 24V 3 phase With High Speed 4000rpm
A motor converts supplied electrical energy into mechanical energy. Various types of motors are in common use. Among these, brushless DC motors (BLDC) feature high efficiency and excellent controllability, and are widely used in many applications. The BLDC motor has power-saving advantages relative to other motor types.
1. 3 Phase Brushless Dc Motor Application
(Stepper motor, electrical motor,brake motor,motor driver,gear motor,bldc motor,brushless motor)
Textile machinery, engraving machine
Security, 4g antenna, solar energy
Medical equipment, industrial automation
Automobile, office automation
Printing equipment, advertising equipment etc.
2.Small High Torque Dc Motor Genaral Specification
| Item | Specification |
| Winding type | Delta |
| 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 | 28N ＠20mm form the flange |
| Max.axial force | 10N |
| Insulation class | Class B |
| Dielectric strength | 500VDC for one minute |
| Insulation resistance | 100MΩ Min.,500VDC |
3. High Speed Dc Motor Electrical Specification:
| Model | |||||
| Specification | Unit | JK42BLS01 | JK42BLS02 | JK42BLS03 | JK42BLS04 |
| Number Of Phase | Phase | 3 | |||
| Number Of Poles | Poles | 8 | |||
| Rated Voltage | VDC | 24 | |||
| Rated Speed | Rpm | 4000 | |||
| Rated Torque | N.m | 0.0625 | 0.125 | 0.185 | 0.25 |
| Rated Current | Amps | 1.8 | 3.3 | 4.8 | 6.3 |
| Rated Power | W | 26 | 52.5 | 77.5 | 105 |
| Peak Torque | N.m | 0.19 | 0.38 | 0.56 | 0.75 |
| Peak Current | Amps | 5.4 | 10.6 | 15.5 | 20 |
| Back E.M.F | V/Krpm | 4.1 | 4.2 | 4.3 | 4.3 |
| Torque Constant | N.m/A | 0.039 | 0.04 | 0.041 | 0.041 |
| Rotor Inertia | g.c㎡ | 24 | 48 | 72 | 96 |
| Body Length | mm | 41 | 61 | 81 | 100 |
| Weight | Kg | 0.3 | 0.45 | 0.65 | 0.8 |
| 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 | ||||
| Altitude | 1000m or under 1000m | ||||
Matching Brushless Dc motor Driver: JKBLS70 JKBLS120 JKBLS300
4. Dimensions Of 42mm Brushless DC Motor: (Unit=mm)
5.
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.
Ideal Applications for BLDC Motors
We’ve seen that BLDC motors offer high efficiency and controllability, and that they have a long operating life. So what are they good for? Because of their efficiency and longevity, 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.
They are also being used to drive vacuum machines. In one case, a change in the control program resulted in a large jump in rotational speed—an example of the superlative controllability offered by these motors.
BLDC motors are also being used to spin hard disc drives, where their durability keeps the drives operating dependably over the long term, while their power efficiency contributes to energy reduction in an area where this is becoming increasingly important.