Name: China High Quality Cylindrical Magnets Manufacturers and Factory - Customized Service - Jinconn
Brand: Jinconn
SKU: 294157863

Description

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Product Overview & Application Scenarios

Experience unmatched magnetic power with our customized precision machined high quality cylindrical magnets , meticulously engineered for industrial, technological, and precision applications. Manufactured using advanced sintering technology and the highest grade rare earth materials, this precision engineered high quality cylindrical magnet delivers exceptional magnetic force, tight dimensional tolerances, and long-term durability in even the most demanding environments.

Key Features & Advantages

√ Super Strong Magnetic Strength

Constructed from premium-grade NdFeB (Neodymium-Iron-Boron), this magnet offers one of the highest energy products in the industry-ideal for high-efficiency applications requiring compact yet powerful magnetic force.

√ High Coercivity & Remanence

Designed to retain magnetism under extreme conditions, it provides excellent coercive force and remanent magnetization, reducing demagnetization risk in high-speed motors or precision instruments.

√ Precision Cylindrical Shape

CNC-machined to tight tolerances with a smooth round surface, ensuring a perfect fit for housings, shafts, sensors, and rotating systems where alignment and balance are critical.

Application Scenarios

Motors & Drives

Brushless DC Motor (BLDC) Rotor
Miniature Motor / Servo Motor Magnet Rings
Wind Turbine or Power Tool Motors
High-Frequency Motor Magnet Assembly

Key Advantages:

High coercivity and high remanence for enhanced power density and fast response in motor systems.

Magnetic Fixtures & Holding Systems

Precision Positioning Fixtures

Magnetic Base Hold-Down Posts for Work Platforms

Magnetic Guide Rail Clamping Structures

▼ Key Advantages:
Compact design, strong holding force, reusable structure-reduces manual operation time and increases efficiency.

Magnetic Couplings & Gearings

Sealless Pump / Magnetic Pump Systems

Contactless Rotary Drives

Magnetic Transmission Structures in Automated Equipment

▼ Key Advantages:
Stable magnetic coupling and frictionless rotation, ideal for cleanroom or sealed system applications.

Technical Specifications

Product Name	high quality cylindrical magnets
Magnet Grade	N52 (Br ≥14.2 kGs, Hcj ≥12 kOe)
Dimension	D2x4mm
Dimensional Tolerance	+/-0.05
Operating Temperature	≤80°C (High-temp versions available)
Density	≥7.5 g/cm³
Surface Magnetic Field	3,500 Gs
Magnetic Flux	2.0 mWb (Fluxmeter-tested)

Packaging & Transportation

Defect Prevention and Quality Screening
All magnets undergo 100% inspection using precision measuring tools such as calipers, optical projectors, visual inspection, and automated detection systems. This process ensures the complete elimination of products with cracks, edge chipping, oxidation, coating defects, or other non-conformities.

Consistent Magnetization and Optimized Configuration
Each magnet is uniformly magnetized under controlled conditions and arranged according to customer-specific requirements. This ensures stable magnetic performance while supporting efficient handling, storage, and compatibility with automated assembly processes.

Advanced Vacuum Packaging Protection
Magnets are packaged using multi-layer vacuum-sealing technology combined with moisture barriers. Desiccants or nitrogen filling are applied as required to effectively prevent corrosion, oxidation, and magnetic interaction during storage and transportation.

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.

⭐20+ years of magnet manufacturing expertise

⭐Strict quality control & customization capability

⭐Multilingual technical support with global delivery

⭐RoHS and REACH compliant

Usage Precautions?

⚠ Safety & Handling Guidelines

Handle with care:

Neodymium magnets are brittle and can chip or crack if dropped or impacted.

Avoid injury:

Always slide magnets apart-do not force or pry them to separate.

Check polarity before use:

Incorrect installation may cause malfunction or damage to equipment.

Store properly:

Keep in a dry, neutral environment; avoid contact with moisture, acids, or corrosive substances.

Keep away from sensitive electronics:

Do not place near hard drives, magnetic cards, pacemakers, or similar devices.

Customization & Services

Customizable magnet dimensions, geometry, and surface coatings (including layer count, thickness, and color)
Precision magnetization orientation and adjustable magnetic field intensity
Optional laser marking for logos, part numbers, or traceability codes
Specialized packaging and pull-force testing tailored to your application needs

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.

♦ Precision Magnetics, Tailored for Performance.

If you have any magnet-related needs, we offer free customized magnet services. Please feel free to contact us at any time.

FAQ

Q1. What is the difference between intrinsic coercivity (Hcj) and coercivity (Hcb)?

Answer:Hcj represents the magnet's resistance to irreversible demagnetization, while Hcb indicates resistance to partial demagnetization. Hcj is more critical for applications involving high temperature, vibration, or opposing magnetic fields, as it better reflects long-term magnetic stability.

Q2. Why does a higher grade NdFeB magnet sometimes perform worse at elevated temperatures?

Answer:Higher grades offer higher magnetic energy at room temperature but often have lower intrinsic coercivity. Without proper temperature grading (H, SH, UH, etc.), high-grade magnets may suffer irreversible demagnetization when exposed to heat.

Q3. How does magnet thickness influence demagnetization risk?

Answer:Thicker magnets provide better internal magnetic stability and are less susceptible to demagnetization. Thin magnets operating near their temperature limit or in open magnetic circuits face a higher risk of performance loss.