The Neodymium Disc with Hole Magnet for High - Power Use is a premium magnetic component engineered to deliver exceptional magnetic strength, making it the top choice for applications where maximum holding force, compact size, and reliable performance are critical. Crafted from neodymium-iron-boron (NdFeB)—the strongest permanent magnet material available—this disc-shaped magnet with a central hole offers unmatched magnetic flux density, far exceeding that of ceramic or alnico magnets. Available in outer diameters from 10mm to 150mm, inner hole diameters from 3mm to 40mm, and thicknesses from 2mm to 25mm, it generates holding forces ranging from 10kg to 400kg, depending on size and grade (with high-grade options like N52 providing the highest power).

A key advantage of this neodymium disc magnet is its high strength-to-weight ratio. Compared to other high-power magnet types (like samarium cobalt), neodymium magnets are significantly smaller and lighter while delivering equivalent or greater force. This makes them ideal for high-power applications where space and weight are limited, such as in electric vehicles (EVs), wind turbines, and high-performance motors. For example, in an EV’s powertrain, a 80mm outer diameter, 20mm inner hole N52 neodymium disc magnet is used in the motor’s rotor. The magnet’s strong magnetic field interacts with the stator’s electrical current to generate torque, propelling the vehicle forward. The hole in the magnet allows it to be mounted on the rotor shaft, ensuring precise alignment and efficient power transfer. The compact size of the neodymium magnet also helps reduce the motor’s overall weight, improving the EV’s battery efficiency and range.

In renewable energy systems, such as wind turbines, this high-power disc magnet plays a crucial role in energy generation. A 120mm outer diameter, 30mm inner hole neodymium disc magnet is integrated into the turbine’s generator, where it rotates with the turbine blades. As the magnet spins, it creates a changing magnetic field that induces an electrical current in the generator’s coils—converting wind energy into electricity. The magnet’s high power ensures efficient energy conversion, even in low-wind conditions, making wind turbines more productive. The hole in the magnet allows for secure attachment to the generator’s rotor, ensuring it can withstand the high rotational speeds (up to 1,500 RPM) of the turbine.

High-power industrial equipment, like magnetic presses or lifting systems, also relies on this neodymium disc magnet. A 150mm disc magnet with a 40mm hole can be used in a magnetic press to apply high pressure to metal components during assembly. The magnet’s strong force (up to 400kg) ensures the components are pressed together tightly, creating a strong bond without the need for adhesives or fasteners. The hole in the magnet allows for the passage of hydraulic lines or electrical cables, enabling the press to operate smoothly.

To protect the neodymium magnet from corrosion and damage, it is coated with a durable layer of nickel-copper-nickel plating, epoxy, or gold. This coating not only extends the magnet’s lifespan but also makes it suitable for use in harsh environments—like marine applications or industrial settings with high humidity. Additionally, for high-temperature high-power applications (like in aircraft engines), neodymium magnets with a samarium cobalt blend are available, which can withstand temperatures up to 200°C without losing magnetic strength.

Whether used in EVs, wind turbines, industrial presses, or high-performance motors, the Neodymium Disc with Hole Magnet for High - Power Use delivers the extreme magnetic force needed for the most demanding applications. Its combination of high power, compact size, and durability makes it a versatile and reliable solution for industries pushing the boundaries of performance.