Premium grade vibration resistant high remanence Permanent ndfeb Racetrack-shaped Magnet

2025-7-15

1. Product Overview & Application Scenarios

A racetrack magnet, also known as a racetrack-shaped ring magnet or racetrack magnet ring, is a type of magnet with a specific shape and magnetic properties. Its name comes from its resemblance to a racetrack or ring shape, and it is commonly used in specialized motor control systems, magnetron sputtering processes, and other applications.

The structural features of this premium grade vibration resistant high remanence  fast response compact Permanent ndfeb Racetrack-shaped Magnet  typically include their shape, dimensions, magnetic pole configuration, and magnetic performance. These  customized corrosion resistant  premium grade vibration resistant high remanence Permanent ndfeb Racetrack-shaped Magnets  are usually made of high-performance permanent magnetic materials, such as neodymium iron boron (NdFeB), to ensure stable magnetic fields and strong magnetic force in applications.

Racetrack magnets have a wide range of uses across various industries. The racetrack magnets produced by our company are primarily used in magnetic charging heads for smartphones and tablets. 

2. Technical Specifications

- Product Name: Premium grade vibration resistant high remanence permanent ndfeb Racetrack-shaped Magnet

- Magnet Grade: N52 (Br ≥14.2 kGs, Hcj ≥12 kOe)  

- Dimension: N52-P11.9*6.65*4.1*R3.325-P8.4*2.8*4.1*R1.4  

- Dimensional Tolerance: +/-0.04  

- Operating Temperature: ≤80°C (High-temp versions available)  

- Density: ≥7.5 g/cm³  

- Surface Magnetic Field: 2,300 Gs  

- Magnetic Flux : 2.0 mWb  (Fluxmeter-tested)  

3. Surface Treatment & Coating Technology

To enhance this premium grade energy efficient vibration resistant high remanence Permanent ndfeb Racetrack-shaped Magnet ‘s  corrosion resistance, surface quality, and magnetic stability, the following treatments are used:

Edge Reinforcement: Laser cladding with nickel-based alloy at magnet seams (prevents electrochemical corrosion)

Edge Rounding: Reduces magnetic field distortion

Default Coating: Triple layer Ni-Cu-Ni (customizable)

Standard Thickness: Ni (3μm) + Cu (5μm) + Ni (4μm)

Optional Coatings: Gold or silver plating for better conductivity and corrosion resistance

Coating Benefits:

Salt spray resistance and improved oxidation durability

Higher surface hardness and scratch resistance

Enhanced gloss, suitable for exposed parts

4. Appearance & Dimensional Inspection

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

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

5. 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.

6. 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.

7. FAQ

Q: How to choose the correct magnetization direction?

Axial Magnetization: Magnetic lines flow through 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

Q: Does magnetism decay over time?
Under normal conditions (room temp, dry, no heavy vibration), NdFeB magnets exhibit excellent time stability (<5% loss over 10 years). However, factors like:

Temperature overrun

Strong external magnetic fields

Surface corrosion

Mechanical impact may affect performance.

8. Why Choose us ？

Dongguan Jinconn New Materials Holdings Co., Ltd. is a publicly listed enterprise offering integrated R&D, manufacturing, and sales of rare earth magnets. Based in Xiaohe Industrial Zone, Daojiao Town, Dongguan, we serve clients across China and globally.

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.

9.  Usage Precautions？

Handle gently: Avoid impacts/drops (brittle material).
Prevent pinching: Slide magnets apart—do not pry.

Polarity check: Install correctly to avoid malfunctions.

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

Keep away from sensitive devices: Hard drives, IC cards, pacemakers, etc.

10. 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

Contact Us
Phone/WhatsApp/WeChat: +8614716150318
Email: leo@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China