Customized premium quality high performance precision tolerance Rectangular Block Neodymium Magnet

Customized premium quality high performance precision tolerance Rectangular Block Neodymium Magnet

2025-7-18

1. Product Overview

This Customized premium quality heat resistant high performance precision tolerance Rectangular Block Neodymium Magnet is a high-performance permanent magnet made from advanced rare earth NdFeB (Neodymium-Iron-Boron) materials, known for their outstanding magnetic properties and exceptional strength. With a sleek, nickel-plated finish, this Customized premium quality strong magnetic force high performance precision tolerance stable Rectangular Block Neodymium Magnet offers both strong magnetic performance and excellent corrosion resistance, making it ideal for a wide variety of demanding industrial and commercial applications.

Key Features & Performance

High Magnetic Strength:
Made from premium-grade NdFeB (available in N35–N52), these magnets deliver some of the highest magnetic forces available, ensuring reliable performance even in compact sizes.

Durable Nickel Plating:
The triple-layer Ni-Cu-Ni (Nickel-Copper-Nickel) coating significantly improves corrosion resistance and enhances surface durability, providing long-term stability even in harsh or humid environments.

Precision Tolerances:
Manufactured with advanced CNC and fine grinding technology, each magnet maintains strict dimensional tolerances for consistency, easy integration, and reliable assembly in automated processes.

Versatile Shape:
The rectangular bar shape maximizes contact surface area, making these magnets suitable for linear force, holding, sensing, and positioning applications.

Customizable Specifications:
Size, grade, magnetization direction, and coating can be customized to meet your unique project or application requirements.

2. Technical Specifications

Product Name: Customized premium quality high performance precision tolerance Rectangular Block Neodymium Magnet

Magnet Grade: N40 (Br ≥ 13.2 KGs, Hcj ≥ 10.8 KOe)
Product Dimensions: D12-D8*3mm
Tolerance: Outer Diameter ±0.05mm, Inner Diameter ±0.05mm, Thickness ±0.05mm
Working Temperature: ≤ 80°C  (customizable for high-temperature versions)
Density: ≥ 7.5g/cm³
Magnetic Field Strength (Surface Gauss): 2900 GS
Magnetic Flux Value: 2.9 mWb (measured with fluxmeter)

3. Manufacturing Process

• Thin-wall Anti-crack Technology: Ultrasonic-assisted cutting to reduce cutting stress; cryogenic processing to prevent material cracking. 

• Grain Boundary Diffusion Technology: Surface coating with dysprosium compounds to improve coercivity.

4 . Appearance and Dimensional Inspection Standards

To ensure this Customized premium quality thermal stability high performance precision tolerance corrosion resistant Rectangular Block Neodymium Magnet’s quality consistency and reliability, all products undergo the following strict inspections:
• Visual Inspection under 800–1200 lumen lighting, 20–750px distance

• 2D Optical Measuring System for complex or non-standard structures

5. Packaging & Transportation

Defect Sorting:
Dimensional and appearance defects are removed before final packaging.

Vacuum Packaging:
Prevents moisture ingress and magnetic interference during shipping.

Outer Packaging:
Shock-resistant, moisture-proof, and anti-magnetic packaging ensures safe transportation.

6. Typical Applications

Industrial Automation:
Fixtures, jigs, robotic arms—ring design allows secure screw fastening for precise positioning.

Tools & Equipment:
Positioning of electric tool components, removable magnetic covers, and instrument panels.

Sensors & Detection Devices:
Magnetic sensors, reed switches, and position detectors.

Medical & Electronic Devices:
Mounting of portable medical equipment and electronic modules—strong magnetic force without interfering with sensitive electronics.

7. Why Choose us ？

Dongguan Jinconn New Material 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.

✅  Rich Industry Experience

With over a decade of expertise in magnetic materials and precision magnet manufacturing, we understand the technical demands of a wide range of industries.

✅ Strong R&D and Customization Capabilities

Our in-house engineering and tooling teams enable us to offer custom-shaped, high-precision, and application-specific magnets tailored to your unique requirements.

✅  Certified Quality Assurance

We adhere to international standards including ISO 9001, ISO 14001, and IATF 16949, with strict quality control from raw materials to finished products.

8. Usage Precautions

NdFeB magnets are hard but brittle; avoid dropping, collision, or edge impacts.

Strong magnetic force may cause pinching—slide magnets apart instead of forcing them.

Ensure correct polarity alignment during installation for stable performance.

Store in dry, cool environments, away from acids, alkalis, or corrosive substances.

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

9. Customization & Services

Custom dimensions, shapes, and coating thickness/color available

Magnetic polarity and force specification as requested

Laser engraving for logos or serial numbers

Special encapsulation and pull-force testing for unique applications

Contact Us:
Phone / WhatsApp / WeChat: +86 18038225892
Email: helen@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China