0769-23388351
Toggle Navigation
Ferrite multipolar magnetic ring and ferrite arc magnet are two types of magnets commonly used in DC motors. The multipolar magnetic ring is a ring magnet with multiple NS on its surface, while the arc magnet represents one pole. Eight pcs arc magnets are also eight poles. Today, we talk about the advantages and choices of ferrite multipolar magnetic ring and arc magnet.
The multipole magnetic ring and the arc magnet block are assembled into a ring, which can be magnetized externally or internally, and can be used as a rotor or stator. Compared with the structure of the two, the multipole magnetic ring rotor has the advantages of high mechanical accuracy and good concentricity. The multipolar magnetic ring can be easily processed by a coreless grinder, and the outer circle accuracy can be guaranteed to be within 0.05mm, which is crucial to the efficiency and stability of the motor. The arc magnet needs to be processed by a single piece and then assembled by multiple pieces, so the dimensional accuracy is much lower, and the tolerance is often more than doubled.
In addition, the ring core of the multipolar magnetic ring rotor does not need to use magnetic materials, but can use plastic, because a closed magnetic circuit has been formed in the magnetic ring wall. However, the arc magnet combined rotor must be made of silicon steel sheet type magnetic conductive materials, otherwise serious magnetic leakage will occur and the magnetic flux loss will be obvious, leading to the reduction of the magnetic flux density on the rotor surface.
The following figure shows the magnetic pole distribution and surface magnetic flux density of the combined rotor with multipolar magnetic ring and arc magnet
According to the experiments and analysis of some engineers, ferrite multipolar magnetic ring rotor and magnetic tile combined rotor have their own characteristics and corresponding application scope, but there are also areas where the two compete in the cross region. For small rotor magnets, such as those below 40 mm, especially when the number of magnetic poles is large, a reasonable solution is to use multipolar magnetic rings, as is the case at home and abroad. For large power requirements and large rotor size, such as more than 100 mm, it is more reasonable to splice the magnetic pads at present, because the requirements of this large multipolar magnetic ring for equipment are more special, the manufacturing cost increases significantly, and the performance advantage disappears.
In the cross area of the above range, the size of the required rotor magnetic ring is roughly 50~80mm. From the perspective of practical conditions and development prospects, the multipolar magnetic ring has more advantages than the arc magnets. Considering the efficiency, miniaturization, energy saving and cost of the motor, it is more reasonable to use multipolar magnetic ring.
The above is the whole content of this article. If you need to evaluate the price of ferrite multipolar magnetic ring and ferrite bending segmented magnet, please consult the courage magnet manufacturer.
These magnets are also commonly used in motors;
This is a length of 30mm, width and thickness of 10mm NdFeb block magnet, the surface is plated nickel copper nickel treatment, thickness direction magnetization, according to the different use of customers, some customers may need length or width magnetization, this is no problem, we can according to the direction of magnetization you need, you do not know our customer service will communicate with you to confirm....
Product Name: Small neodymium magnet，Magnet material: rare earth NdFeb，Performance level: N52，Magnet shape: Bar/rectangle，Magnetization direction: thickness direction，Price: Quote according to purchase quantity and other requirements....
This is a square neodymium magnet with holes, the material is sintered NdFeb, n52 grade, magnetized in the direction of thickness, the hole diameter in the middle is relatively large, produced by China's neodymium magnet manufacturer courage magnet, suitable for machinery manufacturing, hardware parts, such as you need similar square with large hole neodymium iron boron magnet can contact us for your quotation....
Product Name: Rectangular magnet with countersunk hole, Size: Length 40mm, width 20mm, thickness 3mm，Magnet material: sintered NdFeb，Performance level: N38，Coating type: nickel copper nickel，Applications: Mechanical equipment, magnetic locks, industrial, outdoor....
This is a circular magnet with countersunk hole with 40mm outer diameter, 5mm thickness and 6mm (M6) hole provided by the magnet manufacturer Courage Magnet. The countersunk neodymium magnet of this specification has a strong tensile force and is separated by a gasket for easy access. It is mainly used in industrial applications. The quality is stable, Dimensional tolerance standard....
The round countersunk magnet is mainly used with screws. You can choose the size of the magnet, the size of the screw hole, the depth and the level of magnetic properties according to your actual needs. If you need our company to evaluate the price, please send us an inquiry for processing samples....
Note: We are a magnet manufacturer from China. The source manufacturer generally does not mark the price of the magnet, because the magnet is a functional product, which can be customized according to different types of industry customers to effectively meet the actual needs of customers....
because our company is a direct selling manufacturer, non-traders, so the price is not fixed, the price depends on your purchase quantity, tolerance, performance grade, Temperature resistant, so you need to send the inquiry after we give you a quote....