premium quality high strength permanent Arc Segment sintered rare earth Magnets
Product Overview
Customized Industrial grade premium quality strong magnetic force high strength stable permanent Arc Segment sintered rare earth Magnets redefine high-performance magnetic applications through unique geometric flexibility and precise magnetic circuit design, supporting fully customized forms. Their multi-pole magnetization and complex structural engineering enable accurate magnetic field control, making them indispensable in cutting-edge fields like medical microsystems and robotic joints.
More specifically, with the hole, they may be referred to as Wedge Arc Magnets with Central Bore.
These magnets are engineered for high-performance applications where high magnetic strength and precise geometry are critical. Key use cases include:
Electric Motors (BLDC, PMSM)
Magnetic Couplings and Pumps
Industrial Automation
Technical Parameters
Product Name | premium quality high strength permanent Arc Segment sintered rare earth Magnets |
Magnet Grade | N40 (Br ≥13.5 kGs, Hcj ≥10.8 kOe) |
Dimensions | 13mm × 54mm (Customizable) |
Dimension 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 | 3,800 Gs ±200 Gs (TM-801 Gauss Meter) |
Flux Value | 2.0 mWb (Fluxmeter-tested) |
Manufacturing Process
The manufacturing process of this premium quality high strength long-term reliable dimensional accuracy permanent Arc Segment sintered rare earth Magnets are as following:
-Compression Molding: Powder cold-pressed at 800-1,500 MPa → Regular complex shapes
- Extrusion Molding : Powder heated to 50-100°C → Injected into molds → 90-95% theoretical density (Ideal for elongated/tubular shapes)
Sintering & Post-Processing:
- Vacuum Sintering:
1050-1180°C at ≤10⁻³ Pa → >98% theoretical density
Appearance & Dimensional Inspection
Visual Inspection: Under standardized lighting, trained QC staff check for cracks, chipping, inclusions, pores, or oxidation.
Automated Intelligent Inspection: High-speed cameras with AI algorithms detect and reject defects (e.g., cracks, scratches, discoloration) and dimensional anomalies, improving yield and reducing human error.
Magnetic Flux Consistency Test: Fluxmeters or Hall-effect testers measure magnetic flux across batches to ensure uniform performance in end-user applications.
5. 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.
6. 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.
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.
⭐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!
8. 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.
9. 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.
Contact Us：
Phone/WhatsApp/WeChat: +86 13829120676
Email: Info@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China.
- User name Member Level Quantity Specification Purchase Date
- Satisfaction ：
-
Jinconn WeChat