Custom high power Strong 10mm x 4mm x 4mm Arc Shape NdFeB Magnet

Custom high power Strong 10mm x 4mm x 4mm Arc Shape NdFeB Magnet

OR 10mm x IR 4mm x T 4mm Neodymium Arc magnets (South)

These Custom industrial use thermal stability high power Strong 10mm x 4mm x 4mm Arc Shape NdFeB Magnets are designed for industrial applications, especially in making energy-efficient electric motors and generators. Their curved shape allows them to fit smoothly around the rotor, helping to create a strong and steady magnetic field. This improves motor performance and helps save energy. Commonly used in industries like automotive, robotics, and clean energy, these Custom industrial use high coercivity thermal stability high power Strong black epoxy coated 10mm x 4mm x 4mm  Arc Shape NdFeB Magnets support systems that need high torque and efficiency. They also play a key role in industrial machinery and automation, helping equipment run reliably and last longer, an important benefit for modern manufacturing.

Magnet Grade: N42

N52 neodymium magnets offer some of the strongest magnetic power available, with an energy rating of up to 52 MGOe. As one of the highest grades, they are ideal for projects that need extra-strong magnetism. Their powerful performance makes them a reliable choice for demanding applications where maximum strength is essential.

Surface Finish: Epoxy Coating

These precision  customized industrial use  thermal stability high power low irreversible br-loss Strong 10mm x 4mm x 4mm Arc Shape NdFeB Magnets  are finished with a durable triple-layer epoxy coating that enhances corrosion resistance and maintains a clean, professional look. This layered shield protects the magnet’s core from oxidation and wear in mildly humid environments, making them suitable for long-term use in a range of settings. For more aggressive environments, epoxy or other advanced coatings may offer enhanced protection.

APPLICATION EXAMPLES

Material Neodymium (NdFeB)

Product Name:  Custom industrial use thermal stability high power Strong 10mm x 4mm x 4mm Arc Shape NdFeB Magnets
Magnetic Grade: N52 (Br ≥ 14.8 kGs, Hcj ≥ 12 kOe)
Dimensions: OR 10mm x IR 4mm x T 4mm (South)
Dimensional Tolerance: Length ±0.05mm, Width ±0.05mm, Thickness ±0.05mm
Operating Temperature: ≤80°C (high-temp version available)

Pull (kg): 1.31KG

Magnetisation Direction: Radially Magnetised
Density: ≥7.5 g/cm³
Surface Magnetic Field: 3800 ±200 Gauss (measured with TM-801 Gauss meter)
Magnetic Flux: 2.3 mWb (measured with fluxmeter)

Manufacturing Process

This  Custom industrial use high remanence thermal stability  Strong magnetic force 10mm x 4mm x 4mm Arc Shape NdFeB Magnet  is manufactured through the following key processes:

● A high-speed grinding wheel shapes the magnet's surfaces with tight dimensional tolerances.

● Coolant fluid is applied to control heat, reduce surface stress, and ensure a smooth finish.

● The result is a uniform, precisely dimensioned magnet with clean edges—ideal for high-performance applications.

This precision step is essential for ensuring that the final magnets meet strict quality standards for use in motors, sensors, electronics, and aerospace components      

Surface Treatment & Plating

To enhance corrosion resistance and appearance:

Default Plating: Triple-layer Epoxy (customizable).

Standard Thickness: Epoxy (12μm)

Optional Plating: Single-layer Zn (5μm) for cost-sensitive projects.

Features:

✔ Salt spray & oxidation resistance

✔ Increased surface hardness (scratch-resistant)

✔ Improved gloss (ideal for exposed components)

Appearance & Dimensional Inspection

Visual Inspection: Under standardized lighting, trained QC staff check for cracks, chipping, inclusions, pores, or oxidation

Image Measurement System: High-res cameras and algorithms conduct non-contact 2D measurements, especially for complex or irregular shapes, ensuring efficiency and objectivity in mass production. 

Automated Intelligent Inspection: High-speed cameras with AI algorithms detect and reject defects (e.g., cracks, scratches, discoloration) and dimensional anomalies, improving yield and reducing human error. 

Magnetic Flux Consistency Test: Fluxmeters or Hall-effect testers measure magnetic flux across batches to ensure uniform performance in end-user applications.

Reliability Testing

Impact & Vibration Test: Simulates shipping and usage conditions to ensure operational stability.

Constant Temperature & Humidity Test: Performed under 85°C and 85% RH for 96–500 hours. Performance and appearance are compared before and after testing.

Electric Motors & Generators
Application: Precision-engineered magnets are employed in stators, rotors, and brushless DC motors to enhance magnetic flux density, efficiency, and torque performance.

Consumer Electronics
Application: High-performance neodymium magnets are integrated into speakers, haptic systems, vibration motors, and sensors, contributing to compact design and reliable functionality.

Packaging & Transportation

Defect Elimination: 100% inspection using calipers, projectors, visual checks, and automated systems to reject cracked, chipped, oxidized, or coated defective magnets.

Uniform Magnetization & Structured Arrangement: Magnets are uniformly magnetized and arranged for optimal packaging based on customer requirements to ensure performance and facilitate automated assembly.

Vacuum Sealed Packaging: Multi-layer vacuum sealing with moisture barriers, desiccants or nitrogen, prevents corrosion and magnetic interference during storage and shipping.

Customized Outer Packaging: Shock-proof, moisture-resistant, and anti-magnetic leakage packaging (e.g., multilayer cartons, plastic boxes, metal shielding) ensures compliance with international logistics standards. Each box includes a product list, labels, and tracking codes.

We understand logistics is more than just transport — it's about your commitment and customer satisfaction. Our solutions offer:

● Global logistics support

● End-to-end visual tracking

● Multiple layers of transport safety

● One-on-one customer service for tailored shipping plans

With our reliable land, sea, and air logistics network, we empower your business to go further and soar higher.

Frequently Asked Questions:

Q: How to choose the correct magnetization direction?

Axial Magnetization: Magnetic lines flow through the thickness — best for concentrated fields

Radial Magnetization: Magnetic lines radiate outward, for uniform field distribution

Multipole Magnetization: Multiple poles along circumference — for complex fields (e.g., motors, sensors)

Q: What is the maximum working temperature of a ring magnet?

Standard N-series: up to 80°C

High-temp grades (SH/UH/EH): up to 150°C–230°C

Dysprosium-enriched formulations can further enhance temperature resistance

With deep expertise in magnetic materials, we deliver solutions for industries like EVs, smart manufacturing, and electronics. Our strong technical capabilities and product consistency have earned the trust of customers worldwide.

Usage Precautions？

● Handle gently: Avoid impacts/drops (brittle material).

● Prevent pinching: Slide magnets apart—do not pry.

● Polarity check: Ensure proper installation to prevent malfunctions.

● Avoid moisture/acids: Store in dry, mild environments.

● Keep away from sensitive devices, such as hard drives, IC cards, and pacemakers.

Customization & Services

● Custom magnet size, shape, and coating (layers, thickness, color)

● Tailored magnetization direction and field strength

● Laser engraving service for logos or serial numbers

● Packaging and suction force testing for special applications

Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates!

We’re here to help!

 Phone/WhatsApp/WeChat: +86 180 3822 5893

 Email:sales@jinconn.com

 Website: www.jinconnmagnet.com

 Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong, China