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Arc Segment Neodymium MagnetsNeodymium Magnets are made from an alloy containing, amongst others, the elements Neodymium, Iron and Boron (NdFeB). It is the strongest type of magnet and manufactured in a wide range of shapes,
What Are Neodymium Magnets?
Neodymium magnets, also called NdFeB magnets, are rare-earth magnets known for their strong magnetic force in a small size. They’re made from an alloy of neodymium, iron, and boron, then formed into common shapes like discs, blocks, rings, and countersunk parts.
What makes them useful is simple: you get high holding power without taking up much space. That’s why they show up in motors, sensors, fixtures, and many OEM assemblies.
Neodymium magnets can be made with different grades, coatings, and magnetization directions. The right combination depends on your specific temperature, corrosion risk, and the method of magnet mounting in the final product.
Neodymium Magnet Product Types We Supply
By Magnet Shape
If you don't see the shape you need, please click the button below to contact our sales team.
Neodymium Magnets with Countersunk Holes
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Classified By Sintered Neodymium-Iron-Boron
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Specifications of Neodymium Magnets
| Grade | Remanence (Br) | Coercive Force (Hcb) | Intrinsic Coercive (Hcj) | Max Energy Product (BH)max | Working Temp. | ||||
| KGs | T | KOe | KA/m | KOe | KA/m | MGOe | KJ/m³ | Tw(℃) | |
| N35 | 11.7-12.2 | 1.17-1.22 | ≥10.9 | ≥868 | ≥12 | ≥955 | 33-36 | 263-287 | ≤80 |
| N38 | 12.2-12.5 | 1.22-1.25 | ≥11.3 | ≥899 | ≥12 | ≥955 | 36-39 | 287-310 | ≤80 |
| N40 | 12.5-12.8 | 1.25-1.28 | ≥11.4 | ≥907 | ≥12 | ≥955 | 38-41 | 302-326 | ≤80 |
| N42 | 12.8-13.2 | 1.28-1.32 | ≥11.5 | ≥915 | ≥12 | ≥955 | 40-43 | 318-342 | ≤80 |
| N45 | 13.2-13.8 | 1.32-1.38 | ≥11.6 | ≥923 | ≥12 | ≥955 | 43-46 | 342-366 | ≤80 |
| N48 | 13.8-14.2 | 1.38-1.42 | ≥11.6 | ≥923 | ≥12 | ≥955 | 45-49 | 358-390 | ≤80 |
| N50 | 14.0-14.5 | 1.40-1.45 | ≥12.0 | ≥955 | ≥12 | ≥955 | 47-51 | 374-406 | ≤80 |
| N52 | 14.2-14.6 | 1.42-1.46 | ≥10.5 | ≥836 | ≥12 | ≥955 | 49-53 | 390-422 | ≤80 |
| N54 | 14.5-14.9 | 1.45-1.49 | ≥10.5 | ≥836 | ≥11 | ≥876 | 51-55 | 406-438 | ≤80 |
| 35M | 11.7-12.2 | 1.17-1.22 | ≥10.9 | ≥868 | ≥14 | ≥1114 | 33-35 | 263-287 | ≤100 |
| 38M | 12.2-12.5 | 1.22-1.25 | ≥11.3 | ≥899 | ≥14 | ≥1114 | 36-39 | 287-310 | ≤100 |
| 40M | 12.5-12.8 | 1.25-1.28 | ≥11.6 | ≥923 | ≥14 | ≥1114 | 38-41 | 302-326 | ≤100 |
| 42M | 12.8-13.2 | 1.28-1.32 | ≥12.0 | ≥955 | ≥14 | ≥1114 | 40-43 | 318-342 | ≤100 |
| 45M | 13.2-13.8 | 1.32-1.38 | ≥12.5 | ≥995 | ≥14 | ≥1114 | 43-46 | 342-366 | ≤100 |
| 48M | 13.7-14.3 | 1.37-1.43 | ≥12.9 | ≥1027 | ≥14 | ≥1114 | 45-49 | 358-390 | ≤100 |
| 50M | 14.0-14.5 | 1.40-1.45 | ≥13.0 | ≥1033 | ≥14 | ≥1114 | 47-51 | 374-406 | ≤100 |
| 52M | 14.2-14.6 | 1.42-1.46 | ≥13.1 | ≥1043 | ≥14 | ≥1114 | 50-53 | 398-422 | ≤100 |
| 54M | 14.5-14.9 | 1.45-1.49 | ≥13.2 | ≥1051 | ≥14 | ≥1114 | 51-55 | 406-438 | ≤100 |
| 35H | 11.7-12.2 | 1.17-1.22 | ≥10.9 | ≥868 | ≥17 | ≥1353 | 33-36 | 263-287 | ≤120 |
| 38H | 12.2-12.5 | 1.22-1.25 | ≥11.3 | ≥899 | ≥17 | ≥1353 | 36-39 | 287-310 | ≤120 |
| 40H | 12.5-12.8 | 1.25-1.28 | ≥11.6 | ≥923 | ≥17 | ≥1353 | 38-41 | 302-326 | ≤120 |
| 42H | 12.8-13.2 | 1.28-1.32 | ≥12.0 | ≥955 | ≥17 | ≥1353 | 40-43 | 318-342 | ≤120 |
| 45H | 13.2-13.7 | 1.32-1.37 | ≥12.3 | ≥973 | ≥17 | ≥1353 | 43-46 | 342-366 | ≤120 |
| 48H | 13.7-14.2 | 1.37-1.42 | ≥12.5 | ≥995 | ≥17 | ≥1353 | 45-49 | 358-390 | ≤120 |
| 50H | 14.0-14.5 | 1.40-1.45 | ≥12.6 | ≥1003 | ≥17 | ≥1353 | 47-51 | 374-406 | ≤120 |
| 52H | 14.2-14.6 | 1.42-1.46 | ≥13.1 | ≥1043 | ≥17 | ≥1353 | 49-53 | 390-422 | ≤120 |
| 54H | 14.4-14.9 | 1.44-1.49 | ≥13.1 | ≥1043 | ≥17 | ≥1353 | 50-55 | 398-438 | ≤120 |
Note: The above mentioned data is given at room temperature.
The above-mentioned maximum working temperature of the magnet is changeable due to the ratio of length and diameter, surface coating, and environmental factors.
Production Flow
01
Raw Material
02
Melting
03
HP
04
Jet Mling
05
Processing
06
Sintering
07
Inspection
08
Machining
09
Coating
10
Final Inspection
11
Magnetizing Packing
12
Delivery
Our neodymium magnet production flow is built for consistency, not shortcuts. Each stage follows a clear, repeatable sequence, from material preparation and forming to sintering, machining, coating, and final magnetization. Every step is closely controlled to keep magnetic properties, dimensions, and surface quality within defined targets.
This structured workflow reduces variation between batches and makes quality easier to verify, not harder to chase. By the time magnets reach final inspection, their performance and appearance are already predictable.
Want to learn how each step of the factory process is interconnected? Please click the button below to contact our sales team.
Explore Our Manufacturing Flow
Comparison of Neodymium Magnets with Other Magnets
Samarium Cobalt Magnets vs Neodymium Compare |
||
|---|---|---|
| Factor |  |
 |
| Samarium Cobalt (SmCo) Magnets | Neodymium (NdFeB) Magnets | |
| Magnetic strength (energy product) | Strong, but usually lower than top-grade NdFeB | Very strong for its size; often the highest strength option |
| Temperature resistance | Excellent for higher-temperature use | Good to moderate, depending on grade; performance drops faster at high heat |
| Corrosion resistance | Naturally better corrosion resistance | More prone to corrosion; usually needs coating (Ni, Zn, epoxy, etc.) |
| Durability/brittleness | Brittle (can chip if impacted) | Also brittle; can chip and crack if handled roughly |
| Cost level | Higher cost | Generally more cost-effective |
| Typical use cases | High-temp motors, aerospace, harsh environments, precision instruments | Motors, sensors, fixtures, consumer and industrial assemblies |
| Best choice when | Heat and corrosion resistance are the priorities | Maximum strength and compact size are the priorities |
Ferrite Magnet vs Neodymium Compare |
||
|---|---|---|
| Factor |
|
|
| Ferrite (Ceramic) Magnet | Neodymium (NdFeB) Magnet | |
| Magnetic strength | Moderate to low | Very strong for its size |
| Size needed for the same force | Larger magnet required | A smaller magnet can achieve the same holding force |
| Temperature resistance | Good for many general uses | Depends on grade; strength drops faster at higher heat |
| Corrosion resistance | Excellent (doesn’t usually need coating) | More sensitive; typically needs coating in humid or wet environments |
| Cost level | Lower cost | Higher cost |
| Weight/bulk | Bulkier for the same performance | Compact and lighter for the same force |
| Typical use cases | Speakers, general holding, signage, simple motors | Motors, sensors, fixtures, high-performance compact assemblies |
| Best choice when | Cost and corrosion resistance matter most | Space is limited, anda higher magnetic force is required |
Benefits of Neodymium Rare Earth Magnets
Compact Size: Neodymium rare-earth magnets deliver high magnetic force in a small footprint. That helps when your design has limited space, or when you want to reduce part weight without losing holding power.
Design Flexibility: They can be produced in many shapes—disc, block, ring, countersunk, and custom profiles. You can also choose different magnetization directions to match how the magnet will sit inside an assembly.
Precision and Stability: With the right grade and consistent magnetization, neodymium magnets support repeatable performance. This is useful for fixtures, sensors, and rotating parts where small changes can affect results.
Superior Magnetic Strength: Compared with many common magnets, NdFeB magnets offer higher strength for the same size. That often means fewer magnets, simpler mounting, or a cleaner product layout.
Wide Range of Applications: You’ll find them in motors, automation tools, magnetic latches, measurement systems, and many OEM products where strong, compact magnets make the design easier to build and scale.
NdFeB Magnets Limitations
Heat Sensitivity
NdFeB magnets lose strength as temperature rises. Some grades handle heat better than others, but it’s important to match the grade to your real working temperature, not just room conditions.
Corrosion Risk
Bare neodymium magnets can corrode in humid air, salt spray, or chemical exposure. In most products, a coating is needed, and the coating choice should match the environment and handling during assembly.
Brittle Material
These magnets are hard but not tough. They can chip or crack if dropped, squeezed, or snapped together. This matters during shipping and installation.
Safety and Interference
Strong magnets can pinch fingers and attract metal tools quickly. They can also affect electronics and magnetic sensors if placed too close. Simple spacing rules and protective packaging help reduce these issues.
Typical Applications for Neodymium Magnets
Electric Motors and Drives
If you’re trying to get more power from a small motor, neodymium magnets are often the easiest path. You can use ring, arc, or block shapes to fit the rotor layout and keep the magnetic field consistent.
Sensors, Encoders, and Switches
When you need reliable position or speed feedback, you can pair NdFeB magnets with Hall sensors or reed switches. The key is choosing the right magnetization direction so your signal stays stable across units.
Magnetic Holding and Workholding
If your assembly process needs quick positioning, strong holding force, or tool-free clamping, you can use neodymium magnets in fixtures, jigs, and magnetic bases. Small parts can still hold surprisingly well.
Closures and Product Hardware
For covers, doors, and snap-fit closures, you can use compact magnets to simplify the mechanism and keep the exterior clean. This is common in cases, panels, and removable components.
Neodymium Magnet OEM Customization Options
Shapes and Dimensions
You can order common shapes like discs, blocks, rings, arcs, and countersunk magnets, or send a drawing for a custom profile. If your assembly has a tight space, we can help confirm practical tolerances and edge details.
Grade and Temperature Fit
You can choose a magnet grade based on the force you need and the real working temperature. If your product runs warm, selecting the right grade early avoids a strength drop in use.
Magnetization Direction
You can specify axial, radial, multi-pole, or custom magnetization patterns. This matters for motors, sensors, and ring magnets where the pole layout drives performance.
Coating and Surface Protection
You can match coating to your environment and handling needs, such as nickel plating for general use or epoxy-style protection for higher humidity.
Packaging and Inspection
You can request tray packing, separated cells, or assembly-friendly packing to reduce chipping and speed up your line. Inspection items can also be aligned to your incoming QC standard.
Magnetization & Poles Explained
Magnetization is the direction the magnetic field is “set” inside a neodymium magnet. It decides where the north and south poles appear on the part, and how the magnet behaves in your assembly.
The most common option is axial magnetization. The poles are on the two flat faces, so the magnet pulls straight toward steel. Diametrical magnetization puts the poles on opposite sides of a cylinder, which is useful when the magnet needs to interact from the side.
For ring and arc magnets, you may need radial magnetization, where the poles point inward and outward. This is common in motors and rotating systems.
Some designs use multi-pole magnetization, which creates several alternating poles around a ring or along a surface. It can improve sensor signals and smooth rotation, but it must match your target pole count and alignment. If you share your layout, we can suggest a practical magnetization pattern.
Neodymium Magnet Production and Testing Equipment
Testing Workshop
Material Production Equipment
Processing and Production Equipment
Quality Testing Equipment
Packaging Workshop
Want to see how all of this works in actual production? Click the button below to learn more about our manufacturing environment, equipment layout, and quality control processes.
Packaging of Neodymium Magnets
Neodymium magnets may be small, but they require careful handling once they leave the production line. Our packaging process is designed to protect both the magnet’s performance and the safety of transportation. Each magnet is separated, shielded, and secured to prevent chipping, demagnetization, or unwanted magnetic interaction during storage and shipping.
From inner protective layers to reinforced outer cartons, every packaging step follows export and logistics standards, ensuring the magnets arrive intact and ready for use, no surprises, no damage.
Want to learn how magnets are packaged to ensure safe delivery worldwide? Please click the button below.
Customer Feedback on Our Products/Services
Most customers don’t judge a magnet supplier by one good sample. They judge by whether the next order is just as consistent.
In the feedback we receive, buyers often mention that the magnets match the previous batch and perform the same in their tests. That repeatability matters when the magnets go into an assembly or a tool that can’t afford surprises.
Packaging is another point customers bring up. Several messages specifically note that the goods arrived well packed and in clean condition, with parts protected so they don’t chip or rub during transport.
On the service side, customers value the day-to-day basics done well. They like getting a quote quickly, having the part number and specs confirmed without back-and-forth, and receiving clear updates on packing and shipment.
That’s the standard we aim to keep: stable quality, careful packing, and reliable follow-through from sample to bulk.
Our Certificate
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Get quality neodymium magnets from professional neodymium magnets manufacturers and suppliers here. Our factory offers the best products with the lowest price.
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