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Large round magnet with holes is a kind of magnet with a large diameter and with holes, which can be used in many places, today this article will introduce to the types of round magnets with holes, including the type of shape, the type of material, as well as how to choose, what are the uses.
Comparison of commonly used materials and performance of large round magnets with holes
NdFeB material: the strongest magnetic force, suitable for high-performance applications, such as motors, sensors, industrial adsorption equipment, but the high temperature resistance and corrosion resistance is poor, the need for surface coating anti-oxidation.
Samarium Cobalt: the magnetic force is slightly inferior to NdFeB, but the high temperature resistance is good, can be used for higher than 250 degrees Celsius above environment, suitable for aerospace, military and high temperature environment.
Ferrite material: weaker magnetic force, but low cost, corrosion resistance, suitable for speakers, micro-motors and other low-cost applications.
Neodymium ring magnet with large inner hole, also known as neodymium magnetic ring
The above 3 types are the most mainstream magnet application materials in the current market. Depending on the application requirements, the magnet can be customized in terms of outer diameter size, hole size, hole location, and thickness.
The shape types of large circular magnets with holes can be divided into center holes, offset holes (holes not in the middle), multiple holes, and side holes (with certain thickness requirements, too thin is not acceptable) according to the design of the holes
Large Diameter Round Magnet with Countersunk Hole in Center 100mm
The holes can be straight or screw holes as in the picture above.
In terms of applications, perforated large circular magnets are mainly used in heavy industry, mechanical equipment, large speakers, medical equipment, rehabilitation equipment, magnetic levitation and other products.
As for how to choose, let me say a few points. It is necessary to select the appropriate magnet material and performance level according to the application scenario, and choose the appropriate hole position and size according to the installation method. Ferrite is suitable for scenarios with limited budget and low magnetic requirements, neodymium magnets are suitable for high-performance needs, and samarium cobalt is suitable for use in high-temperature scenarios.
Our company is a permanent magnet manufacturer, and we hope the above information can help you better understand perforated large circular magnets. If your project requires perforated large circular magnets, please feel free to contact us for a quotation and customized sample testing.
Sample case (also our company website)
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This is a square rare earth neodymium magnet with a through hole (straight hole), N35 grade, the size of the magnet is 20mm long, 20mm wide, and 5mm thick, the magnetization method is thickness magnetization, and the surface has three layers of nickel, copper and nickel for good protection. Magnets, make life longer, suitable for industry....
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Our company is a professional permanent magnet direct sales manufacturer, located in Dongguan, China. We can supply circular, annular, rectangular and arc-shaped ceramic ferrites. Welcome to consult the price with quantity....