0.4" x 2.4" N52 Diametrically Magnetized Neodymium Cylinder Magnets – Strong Rare Earth Magnets
Quick Facts
| Attribute |
Value |
| Magnet Type |
Neodymium Rare Earth Cylinder Magnet |
| Grade |
N52 |
| Shape |
Cylinder |
| Diameter |
0.4" |
| Height |
2.4" |
| Pull Force |
Approximately 66 lbs* |
| Material |
NdFeB (Neodymium-Iron-Boron) |
| Coating |
Nickel-Copper-Nickel (Ni-Cu-Ni) Triple Layer |
| Magnetization |
Diametrically Magnetized (Through the 0.4" Diameter) |
| Br Max |
14,800 Gauss |
| Certification |
ISO Certified |
*Note: Actual pull force may vary depending on the application, contact surface, and mounting configuration. Testing in your specific application is recommended.
Quick Answers
| Question |
Answer |
| How strong is this magnet? |
Approximately 66 lbs of pull force under ideal conditions. |
| What is this magnet made of? |
NdFeB (Neodymium-Iron-Boron) rare earth material. |
| What does diametrically magnetized mean? |
The north and south poles are located on the curved sides of the cylinder rather than on the flat ends, creating a magnetic field across the diameter. |
| Can it be used outdoors? |
Yes, but additional sealing is recommended for long-term exposure to moisture or harsh environments. |
| What is it commonly used for? |
Motors, magnetic couplings, rotary encoders, sensors, precision alignment, engineering prototypes, and industrial applications. |
Product Overview
These 0.4" x 2.4" N52 Diametrically Magnetized Neodymium Cylinder Magnets are engineered for demanding applications where both magnetic strength and field orientation are critical. Unlike standard axially magnetized cylinder magnets, these magnets are magnetized through the 0.4-inch diameter, placing the north and south poles on opposite curved sides. This creates a lateral magnetic field that is ideal for rotational motion, magnetic sensing, coupling systems, and precision positioning.
The slim 0.4-inch diameter allows easy integration into compact assemblies, while the 2.4-inch length provides increased stability and greater magnetic interaction across the length of the magnet. Manufactured from premium N52 grade neodymium, these magnets deliver exceptional holding power and consistent performance for advanced engineering and industrial applications.
Each magnet features a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating that provides excellent resistance to corrosion, scratches, and chipping while maintaining a smooth, polished metallic finish.
What Is a Diametrically Magnetized Cylinder Magnet?
A diametrically magnetized cylinder magnet is a permanent magnet made from NdFeB (Neodymium-Iron-Boron) in which the magnetic poles are located on the curved sides of the cylinder instead of the flat ends.
This unique magnetization pattern creates a magnetic field across the diameter, making these magnets ideal for rotating shafts, magnetic couplings, encoders, sensors, actuators, and applications requiring side-facing magnetic fields. Diametrically magnetized cylinder magnets are widely used in robotics, automation, instrumentation, and precision mechanical systems.
How Strong Is This Magnet?
This 0.4" x 2.4" N52 diametrically magnetized cylinder magnet provides approximately 66 pounds of pull force under ideal testing conditions.
Because the magnet is diametrically magnetized and has a relatively small contact area, actual holding force can vary depending on the mounting method, steel thickness, surface finish, and orientation. Performance should be verified in the intended application.
Technical Specifications
| Specification |
Value |
| Magnet Type |
Neodymium Rare Earth Cylinder Magnet |
| Grade |
N52 |
| Shape |
Cylinder |
| Diameter |
0.4" |
| Height |
2.4" |
| Material |
NdFeB (Neodymium-Iron-Boron) |
| Coating |
Nickel-Copper-Nickel Triple Layer |
| Magnetization |
Diametrically Magnetized (Through the 0.4" Diameter) |
| Pull Force |
Approximately 66 lbs* |
| Br Max |
14,800 Gauss |
| Certification |
ISO Certified |
Nickel-Copper-Nickel Triple-Layer Coating
Every magnet is protected with a Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating for outstanding durability and corrosion resistance.
Benefits
- Excellent scratch and wear resistance
- Superior protection against chipping and cracking
- Outstanding corrosion resistance
- Smooth, polished metallic finish
- Long-lasting durability for industrial and engineering applications
Magnet Grade Comparison
| Grade |
Relative Strength |
Typical Applications |
| N35 |
Standard |
General purpose |
| N38 |
Moderate |
Consumer products |
| N40 |
High |
Industrial |
| N42 |
Higher |
Engineering |
| N52 |
Maximum |
High-performance industrial and precision applications |
Cylinder Magnet Size Comparison
| Size |
Typical Use |
| Small |
Sensors, electronics, compact devices |
| Medium |
General holding, positioning, fixtures |
| 0.4" x 2.4" |
Magnetic couplings, rotary systems, encoders, precision engineering |
| Large |
Heavy-duty industrial assemblies |
Applications by Industry
| Industry |
Common Uses |
| Manufacturing |
Precision fixtures and magnetic couplings |
| Robotics |
Rotary positioning and actuators |
| Electronics |
Encoders, sensors, and magnetic assemblies |
| Automation |
Motion control and positioning systems |
| Engineering & DIY |
Prototypes, custom machinery, educational demonstrations |
Common Questions About This Magnet
What is the pull force?
This magnet provides approximately 66 pounds of pull force under ideal conditions. Actual pull force depends on the application, contact surface, and mounting orientation.
What does diametrically magnetized mean?
The magnet is magnetized through its 0.4-inch diameter, with the north and south poles located on opposite curved sides rather than on the flat ends. This produces a side-facing magnetic field ideal for rotating and sensing applications.
Is N52 stronger than N42?
Yes. N52 is the strongest commercially available neodymium grade and provides greater magnetic energy and holding power than N42 magnets of the same dimensions.
Can it rust?
Like all neodymium magnets, it contains iron and may corrode if the protective coating is damaged or if exposed to harsh environments for extended periods.
Can it be used outdoors?
Yes. However, for long-term outdoor or marine applications, additional sealing is recommended to maximize corrosion resistance.
Do you offer bulk discounts?
Yes. Contact Super Magnet Store for wholesale pricing and volume discounts on large quantity orders.
Why Buy From Super Magnet Store?
- Premium NdFeB rare earth magnets
- ISO-certified quality
- Maximum-strength N52 grade
- Diametrically magnetized for specialized engineering applications
- Durable Nickel-Copper-Nickel triple-layer coating
- Consistent magnetic performance
- Precision-manufactured to tight tolerances
- Competitive wholesale pricing
- Bulk discounts available
- Trusted supplier serving industrial, commercial, research, and engineering customers worldwide
