Product Overview & Application Scenarios
This cylindrical neodymium iron boron (NdFeB) permanent magnet features a precision axial through-hole. Manufactured from high-grade rare earth magnetic material, it delivers high magnetic strength and stable performance in compact geometries, making it suitable for demanding industrial applications.
The axial bore design enables mechanical integration with shafts, rods, or fluid-carrying pipelines, allowing continuous material flow or structural assembly without compromising magnetic performance. The magnet is magnetized along the axial direction, ensuring a concentrated and consistent magnetic field distribution around the outer surface of the cylinder.
Applications & Advantages
This cylindrical NdFeB magnet with an axial through-hole is widely used in magnetic separation, filtration systems, and industrial fluid processing equipment. The through-hole design enables direct installation on shafts, rods, or pipelines, allowing uninterrupted material flow and compact system integration.
The magnet provides high magnetic strength, stable axial magnetization, and efficient field concentration, ensuring reliable removal of ferromagnetic contaminants in demanding industrial environments.
Typical Application Scenarios
Magnetic Separation & Filtration
Key Requirements
High surface magnetic force
Stable performance during continuous operation
Recommended Grades
N42 / N48
N42SH for elevated temperatures
Common Issues & Solutions
Magnetic loss at high temperature → Use SH-grade materials
Corrosion in wet media → Apply epoxy or Parylene coating
Industrial Fluid Processing / Petrochemical Systems
Key Requirements
Uniform magnetic field distribution
Mechanical compatibility with pipelines
Recommended Grades
N40SH / N42SH
N35EH for higher thermal stability
Common Issues & Solution
Thermal demagnetization → Select high-temperature grades
Mechanical damage during installation → Use protective housing
Technical Specifications
|
Product Name |
strong magnetic force cylindrical magnets |
|
Magnet Grade |
N35 (Br ≥11.8kGs, Hcj ≥12 kOe) |
|
Dimension |
N35-D35-D15*30 |
|
Dimensional Tolerance |
+/-0.05 mm |
|
Operating Temperature |
≤80°C (High-temp versions available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
4,100 Gs |
|
Magnetic Flux |
2.0 mWb (Fluxmeter-tested) |
Manufacturing Process
NdFeB magnets are produced through a precise and controlled manufacturing process to ensure high magnetic performance and reliability:
- Raw Material Preparation
High-purity rare earth elements, iron, and boron are accurately proportioned.
- Melting & Alloying
Materials are melted under vacuum or inert gas to form a uniform NdFeB alloy.
- Powder Production
The alloy is crushed and milled into fine powder with controlled particle size.
- Magnetic Alignment & Pressing
The powder is aligned in a strong magnetic field and pressed into shape.
Reliability & Quality Assurance
▲A structured testing and quality assurance system is applied to ensure product reliability and batch-to-batch consistency.
Quality Control Process:
- Raw material inspection: composition analysis and magnetic verification
- Production control: monitoring of key parameters and batch traceability
- Pre-shipment inspection:
- Magnetic performance consistency testing
- Dimensional accuracy and visual inspection
- Coating adhesion verification
- Corrosion resistance (salt spray test)
Quality Documentation:
- Batch magnetic performance report
- Dimensional and visual inspection records
- Coating and reliability test reports
- Customer-specified standards supported
Packaging & Transportation
Magnets are inspected for coating integrity prior to packaging.
Anti-rust materials or corrosion-inhibiting packaging are applied.
Products are sealed in moisture-resistant packaging.
Shock-absorbing materials prevent chipping and cracking during handling.
Why Choose us ?
Dongguan Jinconn New Material Holdings Co., Ltd. is a listed enterprise focused on the development and production of high-performance rare earth magnets. Backed by 20+ years of manufacturing expertise, we provide end-to-end solutions covering material R&D, process optimization, and large-scale production.
Our manufacturing base in Dongguan enables efficient supply to both domestic and overseas customers.
Why work with Jinconn
- Two decades of experience in rare earth magnet engineering
- Strict QC systems and flexible customization
- Professional technical communication in multiple languages
- Products compliant with RoHS & REACH regulations
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.
FAQ
Q1. How is coating adhesion evaluated?
Coating adhesion is typically tested using cross-hatch, tape pull, thermal cycling, and humidity exposure methods to ensure long-term durability.
Q2. What is the difference between sintered and bonded NdFeB magnets?
Sintered NdFeB magnets offer higher magnetic strength, while bonded magnets provide better shape complexity, impact resistance, and dimensional stability.
Q3. Can NdFeB magnets be used in high-speed motor applications?
Yes, but mechanical strength, coating adhesion, and rotor design must be considered to withstand centrifugal forces and thermal stress
Contact Us
Phone/WhatsApp/WeChat: +86 13829120676
Email: info@jinconn.com
Website: www.jinconnmagnet.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong, China
Hot Tags: strong magnetic force cylindrical magnets, China strong magnetic force cylindrical magnets manufacturers, factory
