Custom Neodymium Block Magnets Manufacturer
Neodymium block magnets are one of the most widely used permanent magnet shapes because they provide strong magnetic force, flat mounting surfaces, and excellent versatility. Their rectangular form makes them ideal for assemblies, automation systems, holding devices, and magnetic equipment. We manufacture and supply custom neodymium block magnets in a wide range of sizes, grades, coatings, and tolerances for global customers.
What Is a Neodymium Block Magnet?
A neodymium block magnet is a rectangular or square magnet made from NdFeB (Neodymium Iron Boron), one of the strongest permanent magnetic materials available.
Block magnets are typically defined by:
- Length
- Width
- Thickness
- Magnet grade
- Coating type
- Magnetization direction
They are commonly selected when strong holding force and easy installation are required.
Why Choose Block Magnets?
The block shape offers major practical advantages:
- Strong magnetic force
- Flat surfaces for easy mounting
- Efficient use in assemblies
- High contact area
- Easy stacking or pairing
- Wide size flexibility
- Ideal for industrial equipment
Common Sizes Available
1). Available sizes for neodymium block magnets
- Length: 1 – 200mm (1/16 – 7 7/8 inches)
- Width: 0.5 – 100mm (1/64 – 3 15/16 inches)
- Height: 0.3 – 120mm (1/64 – 4 ¾ inches)
2). The largest neodymium block magnets that we can offer
- Rectangle: Length 200 × width 80 × height 50mm (7 7/8 x 3 1/8 x 1 15/16 inches)
- Square: Length 100 × width 100 × height 60mm (3 15/16 x 3 15/16 x 2 3/8 inches)
The longest magnetization direction: 200mm (7 7/8 inches)
Note: If the size of one direction is the largest, then the size of other directions should be smaller. If the sizes of two directions are larger, the thickness should not be too small.
3). The smallest size of block magnets
- Length 1 × width 1 × height 0.3mm (1/16 x 1/16 x 1/64 inches)
Magnet Grades Available
| Grade | Strength Level | Typical Use |
|---|---|---|
| N35 | Standard | General use |
| N42 | Medium-high | Electronics |
| N48 | High | Industrial assemblies |
| N52-N55 | Very high | Maximum pull force |
| H / SH | High temp | Motors / machinery |
We can recommend the best grade for your application.
Surface Coating Options
To improve durability and corrosion resistance:
- Nickel (Ni-Cu-Ni)
- Zinc
- Epoxy
- Black epoxy
- Gold
- PTFE (special request)
Magnetization Options
Through Thickness Magnetization
Most common. Poles located on the large flat faces.
Used for holding and mounting applications.
Through Length Magnetization
Poles on each end of the block.
Used for directional field designs.
Through Width Magnetization
Used in selected technical assemblies.
Magnetization Directions
The dimension designation for block magnets is typical: Length x Width x Height.
The last number of this measurement identifier represents the magnetization surface.
For example, the polarization orientation of an F20 x 15 x 10 mm magnet is a 10 mm surface.
Customization Options
We support OEM customization for:
- Length
- Width
- Thickness
- Grade
- Coating
- Magnetization direction
- Chamfer / edge processing
- Packaging
- Assembly integration
How to Choose the Right Block Magnet
| Need | Recommended Option |
|---|---|
| General industrial use | N35 / N42 block magnet |
| Strong holding force | N52 block magnet |
| Compact high power | N48 / N52 |
| Heat resistance | H / SH grade |
| Outdoor use | Epoxy coating |
| Precision assembly | Tight tolerance block magnet |
Request a Free Quote
Looking for a reliable supplier for Neodymium Block Magnets? Send your drawing or requirements today and receive a quotation within 12 hours.