A precision N52-grade neodymium ring magnet paired with a magnetic field viewing film for scientific demonstrations, teaching, and research. Powerful, compact, and ideal for magnetic visualization.
custom strong magnetic force rare earth NdFeB ring magnets
Product Overview
Nickel-plated cube magnets feature six magnetizable faces. When axially magnetized, they form closed magnetic circuits, delivering stronger holding force than same-volume bar magnets. The nickel plating provides exceptional corrosion resistance, ideal for marine/chemical environments. Supports single-axis (X/Y/Z) or multi-axis magnetization.
Technical Parameters:
Product Name | custom strong magnetic force rare earth NdFeB ring magnets |
Magnet Grade | N42 (Br ≥13.5 kGs, Hcj ≥17 kOe) |
Dimension | 25mm × 5mm × 8mm (R3) |
Dimensional Tolerance | L±0.05mm, W±0.05mm, T±0.05mm |
Operating Temperature | ≤80°C (High-temp versions available) |
Density | ≥7.5 g/cm³ |
Surface Magnetic Field | 2600 Gs |
Magnetic Flux | 2.1 mWb (Fluxmeter-tested) |
Manufacturing Process
The manufacturing process of this custom high adhesive force high energy density strong magnetic force rare earth NdFeB ring magnet are as following:
- Directional Magnetization:
Pulse magnetizer achieves 99% saturation along specified axes
- Wire Cutting:
Molybdenum wire cutting (±0.03mm accuracy, segmented programming)
Reliability Testing
To ensure magnet maintain excellent corrosion resistance in complex or harsh environments, the salt spray test is an essential accelerated aging method. It simulates long-term exposure to marine climates, industrial pollution, humidity, or acidic and alkaline conditions, allowing for a reliable evaluation of the protective performance and durability of the magnet's surface coating.
Constant Temperature & Humidity Test: Performed under 85°C and 85% RH for 96–500 hours. Performance and appearance are compared before and after testing.
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.
We know logistics is more than moving goods — it’s about delivering your promise. Our trusted solutions offer:
Global shipping coverage
Real-time tracking from origin to destination
Enhanced safety at every stage
Dedicated service with customized shipping plans
With our robust land, sea, and air network, your business moves faster, safer, and with complete confidence.
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
Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates!
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.
Contact Us：
Phone/WhatsApp/WeChat: +86 13829120676
Email: Info@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China.
