Big Neodymium Magnets Manufacturer
As a professional neodymium magnet manufacturer, we supply large neodymium magnets in custom sizes, shapes, grades, coatings and magnetization directions. Whether you need a large block magnet, disc magnet, ring magnet, arc magnet or a complete magnetic assembly, our engineering team can support your design from prototype to mass production.
What Is a Big Neodymium Magnet?
A big neodymium magnet is a large-size rare earth magnet made from NdFeB material. Compared with ferrite, AlNiCo or SmCo magnets, neodymium magnets provide much higher magnetic strength for the same volume.
Large NdFeB magnets are commonly used when a small magnet cannot provide enough holding force, magnetic field strength or working distance. Because these magnets can generate very high attraction force, the correct design of grade, size, coating, magnetization direction and safety packaging is very important.
Big Neodymium Magnet Specifications
| Item | Available Options |
|---|---|
| Material | Sintered Neodymium Iron Boron, NdFeB |
| Magnet Grade | N35, N38, N40, N42, N45, N48, N50, N52, N54, N55, M, H, SH, UH, EH series |
| Shape | Block, disc, cylinder, ring, arc, segment, countersunk, custom shape |
| Size | Customized according to drawing or application |
| Coating | Ni-Cu-Ni, zinc, epoxy, black epoxy, gold, silver, passivation, custom coating |
| Magnetization | Axial, diametrical, thickness, length, radial, multi-pole, custom direction |
| Working Temperature | Standard up to 80°C; high-temperature grades available |
| Tolerance | Commonly ±0.05 mm or ±0.1 mm depending on size and process |
| Certification | RoHS, REACH and material reports available upon request |
| Packaging | Magnetic shielding, export cartons, wooden cases or custom packaging |
Osenc Magnets Can Produce Such Big Magnet
We can currently only produce:
- 300*40mm disc magnet;
- Magnet with the largest block size of 250*100*40mm;
- The longest attracted orientation is 100*100*100mm.
Some magnetic drum clients have asked for bigger magnets with larger radii – 300mm – so that a single ring magnet can be used instead of several smaller arc-shaped magnets to construct their drums.
Key Advantages of Our Big Magnets
Extremely Strong Magnetic Force
A large NdFeB magnet can provide powerful holding force, high magnetic flux and excellent energy density for demanding industrial applications.
Custom Size and Shape
We manufacture custom big magnets according to your technical drawing, sample or magnetic circuit design. Common large magnet shapes include:
- Large neodymium block magnets
- Big round disc magnets
- Large cylinder magnets
- Neodymium ring magnets
- Arc segment magnets for motors
- Countersunk neodymium magnets
- Magnetic assemblies with steel housing
Multiple Grade Options
Different applications require different magnetic grades. Standard N series grades are suitable for general use, while M, H, SH, UH, EH and AH series grades are designed for higher temperature resistance and better demagnetization resistance.
Reliable Surface Protection
We offer different coatings based on working environment:
- Ni-Cu-Ni coating for general industrial use
- Zinc coating for economical protection
- Epoxy coating for better corrosion resistance
- Black epoxy coating for clean appearance and outdoor-related applications
- Gold or silver coating for special appearance or electronic applications
OEM and ODM Manufacturing
From magnetic calculation and prototype development to batch production and export packaging, we provide one-stop support for custom large neodymium magnet projects.
Available Big Magnet Shapes
Big Block Neodymium Magnets
Large rectangular neodymium magnets are suitable for magnetic holding, separators, fixtures, motors and engineering projects. They can be magnetized through thickness, length or width according to your design.
Large Disc Neodymium Magnets
Big round neodymium magnets are commonly used in holding systems, sensors, speakers, magnetic tools and custom devices.
Large Ring Neodymium Magnets
Ring magnets are used in motors, magnetic couplings, generators, speakers and mechanical assemblies. Inner diameter, outer diameter and thickness can be customized.
Arc Neodymium Magnets
Arc segment magnets are widely used in motors and generators. We can produce custom arc magnets with different radius, angle, thickness and magnetization direction.
Countersunk Neodymium Magnets
Countersunk magnets are designed for screw mounting. They are often used in furniture, displays, doors, fixtures, brackets and removable panels.
Custom Big Magnets
Tailored dimensions, coatings, and magnetic performance according to your drawings or samples.
Customization Options
We can customize:
- Magnet size and shape
- Magnetic strength
- Coating type
- Working temperature
- Tolerance
- Magnetization direction
- Magnetic assemblies
- Packaging solutions
Simply provide your technical drawing, application details, or target pull force.
Custom Manufacturing Process
Our production process for large neodymium magnets includes material preparation, pressing, sintering, machining, coating, magnetizing, inspection and packaging.
For custom projects, we usually follow these steps:
- Review customer drawing or sample
- Confirm grade, size, tolerance and coating
- Check magnetization direction
- Provide quotation and production plan
- Produce samples or trial order
- Inspect dimensions, coating and magnetic performance
- Arrange safe magnetic shielding and export packaging
- Support repeat orders and long-term supply
Because big magnets are brittle and powerful, proper chamfering, coating and packaging are especially important.
Applications of Big Magnets
Big neodymium magnets are widely used in industrial and commercial products where strong magnetic performance is required.
Industrial Holding and Fixing
Large NdFeB magnets are used for magnetic holding fixtures, clamping systems, positioning tools, jigs and industrial mounting solutions.
Motors and Generators
Arc magnets, block magnets and ring magnets are used in high-performance motors, wind generators, servo motors and custom electric machines.
Magnetic Separators
Big neodymium magnets help remove iron particles, metal impurities and magnetic contaminants from powders, grains, liquids and recycled materials.
Automation Equipment
Strong rare earth magnets are used in sensors, robotic systems, actuators, magnetic couplings and automation devices.
Magnetic Assemblies
Many large neodymium magnets are assembled with steel plates, cups, channels or housings to improve holding force and protect the brittle magnet body.
Research and Testing
High-strength neodymium magnets are also used in laboratories, testing equipment, magnetic field experiments and product development.
How Much Do Large Magnets Cost?
It relies on the type of magnet. Neodymium magnets are costly because they require an excessive amount of rare earth.
The expense of a giant neodymium magnet must be higher. Prices per item can vary from $800 to $2000 or more.
The price of large neodymium magnets on Amazon is greater than those of lesser magnets. Because they are significant and challenging to handle. Many variables influence the price, the most significant of which are:
Dimension
Because the magnet is more significant, more basic materials are needed for manufacturing. Neodymium, a rare earth metal, is the primary base substance. As a result, more tremendous leads to higher costs. Big also implies that manufacturing will be more complex than smaller forms, particularly necessitating machines, and magnetizers.
Grade
The elements used to make neodymium magnets determine their classification. A better quality magnet always includes rare earth, such as Dysprosium. It costs more than Neodymium. The higher the temperature protection, the more other kinds of rare earth are required. As a result, an N35EH magnet costs more than an N35 magnet of the same size.
Quantity
Costs vary greatly based on the amount of the purchase. For example, if a client purchases one item, the cost is $1,000. If the buyer buys two pieces, the price per item is $850 because another component can share some fixed.
Why Choose Us as Big Magnets Supplier?
Strong Manufacturing Capability
We support both standard and fully customized large rare earth magnets.
Strict Quality Control
All magnets are tested for: magnetic flux, pull force, dimension accuracy, coating adhesion, temperature performance.
Global Export Experience
We supply industrial magnet solutions to customers across North America, Europe, Southeast Asia, and the Middle East.
OEM & ODM Support
Custom branding, packaging, labeling, and assembly services are available.
Fast Production & Delivery
Efficient production management ensures stable lead times for bulk orders.
Request a Quote for Big Magnets
Looking for reliable large neodymium magnet manufacturers in China? We provide high-performance magnetic solutions for industrial and commercial applications.