1. Product Overview

NdFeB permanent magnets combine high-performance magnetic materials with specialized geometry, ideal for applications requiring directional or concentrated magnetic fields. These magnets deliver powerful magnetic force and are particularly useful in systems that demand magnetic field control. Their superior magnetic properties make them widely applicable in high-precision motors, sensors, and medical equipment.

2. Technical Parameters

- Product Name: NdFeB Wedge-Shaped Permanent Magnet

- Grade: N52 (Br ≥ 14.8 KGs, Hcj ≥ 10.5 KOe)

- Dimensions: Y20 × 13 × 3.5 mm (customizable)

- Tolerance: Length ±0.05 mm, Width ±0.05 mm, Thickness ±0.05 mm

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

- Density: ≥ 7.5 g/cm³

- Surface Magnetic Field: 5400±200 Gauss (measured with TM-801 Gauss meter)

- Magnetic Flux: 2.0 mWb (measured)

3. Manufacturing Process

Special-Shaped Cutting: Custom wire-cutting equipment for non-square/non-circular geometries.
Grinding Wheel Molding: Ensures complex structures and high-precision shaping.

4. Surface Treatment & Coating Technology

- Edge Reinforcement: Laser cladding of nickel-based alloy at seams to prevent galvanic corrosion.

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

- Coating Specs: Ni (3μm) + Cu (5μm) + Ni (4μm)

- Optional Coating: Gold/silver for conductivity and anti-corrosion

5. Appearance & Dimensional Inspection Standards

 Manual dimensional inspection using micrometers or calipers to verify compliance with required specifications

Visual inspection conducted under lighting conditions of 800–1200 lumens, with a standard viewing distance of 20–30 cm

Precision measurement of irregular or non-standard components using 2D optical measuring systems

Automated sorting and comprehensive inspection of product appearance and dimensions using CCD-based smart sorting machines

Magnetic flux testing performed to ensure consistency of magnetic properties across product batches

6. Reliability Testing

6.1 Magnetic Property Testing

Magnetic Field Strength Test: Instruments such as a Gauss meter are used to measure the magnetic field strength at various positions on the magnet to ensure it meets the product specification requirements.

Magnetic Performance Stability Test: The magnet is placed under different temperature and humidity conditions, or left for an extended period. The magnetic properties are then measured again to observe any changes and assess the stability of the magnetic performance.

6.2 Physical Property Testing

Hardness Test: Rockwell hardness testers, Vickers hardness testers, and similar instruments are used to measure the magnet's hardness to ensure it is not easily worn or damaged during use.

Density Test: By measuring the magnet’s density, the uniformity and compactness of its internal structure can be assessed to ensure product quality.

Dimensional Accuracy Measurement: Tools such as calipers and micrometers are used to measure the dimensions of the magnet, ensuring that dimensional deviations remain within the specified tolerance range.

7. Packaging Process & Instructions

- Reject defective appearance/dimensions

- Align and arrange qualified products post-magnetization

- Pack per customer quantity and label specifications

- Vacuum-packed with shielding and cushioning

- Outer carton: moisture-proof, shock-proof, magnetic shielding

- Custom packaging available upon request

8. Application Fields

- High-precision motors and drive systems (e.g. coreless and linear motors)

- Maglev technology (e.g. maglev trains, vacuum rail systems)

- Medical and diagnostic devices (e.g. portable MRI, EM objectives)

- Industrial automation and robotics (e.g. 3D magnetic drive nozzles, magnetic encoders)

9. Usage Precautions

- Handle with care: NdFeB is hard and brittle

- Avoid pinching: Strong magnetic force may cause injury

- Polarity: Install according to marked direction to ensure function

- Storage: Keep away from high humidity, acids, alkalis, and heat

- Magnetic Safety: Avoid proximity to sensitive electronics (e.g. pacemakers, IC cards)

10. Customization & Services

- Custom sizes, shapes, and coatings (layer count, thickness, color)

- Magnetic direction and strength tuning

- Laser-engraved logo or serial numbers

- Pull-force testing, packaging customization, and documentation

available (MSDS, RoHS, ISO, IATF certificates)

11. Why choose Jinconn Magnet

Jinconn takes "contributing to the development of science and technology" as its mission. It currently has 95 patent applications, 76 utility model patents, 16 domestic invention patents and 3 international patents; the conversion rate target is no less than 80%.

We are pleased to offer free customized magnet solutions tailored to your specific needs.

If you require samples, technical datasheets, or certifications such as MSDS, RoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, or ISO 27001, our sales engineers are ready to assist you.