Ring Magnets
Professional Ring Magnet Supplier
Zhaobao Magnet Group is one of China's earliest enterprises engaged in the production of rare earth permanent magnet products. Through years of development, we have grown into a large-scale, comprehensive supplier of permanent magnet products, integrating R&D, manufacturing, and sales. Our products include Neodymium iron boron magnets, Samarium cobalt, Ferrite magnets, Bonded neodymium iron boron magnets, Rubber magnets, and requirements of a variety of permanent magnets and its components.
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![Neodymium Ring Magnet]()
Neodymium Ring MagnetThe neodymium ring magnet is a specialized type of permanent magnet, typically manufactured from high-strength magnetic materials like neodymium or samarium cobalt. Its distinctive donut shape,...read more -
![Strong Ring Magnet]()
Strong Ring MagnetStrong ring magnet is a special shaped magnet, usually made of strong magnetic materials such as neodymium or samarium cobalt. Its main features include the circular magnet is shaped like a donut...read more -
![Powerful Ring Magnet]()
Powerful Ring MagnetPowerful ring magnet is a special type of permanent magnet, typically made from high-strength magnetic materials such as neodymium or samarium cobalt. Their distinctive circular shape, with a...read more -
![Rare Earth Ring Magnet]()
Rare Earth Ring MagnetRare earth ring magnet is a special type of magnet that is made of strong magnet raw materials, for instance neodymium or samarium cobalt. Its main characteristics include a annular magnet shape...read more
Why Choose Us
Quality Assurance
The company has a variety of advanced production, inspection equipment more than 3000 sets, effectively ensure the quality of our products and delivery requirements. The purity of our products can reach over 95%, compared to the industry average of only 80%.
Customization Services
High quality grades from N28 to N52, even high-temperature resistant magnets, with geometric shapes of various thicknesses. Magnetic direction, coating material, size and material can be customized according to customer requirements.
Production Market
We have extensive and deep cooperation with many world famous enterprises in China and even the world. Such as: Ge Ford Samsung Hitachi Haier Xiaomi Foxconn Disney, etc.
Technical Certification
The Group has passed IATF16949, ISO9001, ISO14001, ISO45001 and other international authoritative system certifications.
The products of the group have obtained various authoritative certificates such as CE, CPC, ROHS, REACH, EN71, CP65, ASTM, CPSIA, etc., and are the only magnet factory in China that has the ability to pass CHCC certification.
Types of Ring Magnets
Neodymium Ring Magnet
Neodymium ring magnets are high-strength permanent magnets manufactured from neodymium-iron-boron (NdFeB), offering exceptional magnetic performance in a ring or hollow disc shape.
Strong Ring Magnet
The magnetic field distribution of strong ring magnet is different from that of a traditional rectangular magnet, with two magnetic poles inside and outside, and the magnetic field strength is greater in the internal area.
Powerful Ring Magnet
A powerful ring magnet is a high-performance permanent magnet, typically made from neodymium or samarium cobalt, shaped like a donut or ring.
Rare Earth Ring Magnet
A rare earth ring magnet is a powerful, doughnut-shaped permanent magnet made from alloys of rare-earth elements, most commonly NdFeB or SmCo.
Specification
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Product Name |
Ring Magnet, NdFeB Ring Magnet |
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Grades & Working Temperatures |
Grade |
Working Temperature |
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N30-N55 |
+80℃ / 176℉ |
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N30M-N52M |
+100℃ / 212℉ |
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N30H-N52H |
+120℃ / 248℉ |
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N30SH-N50SH |
+150℃ / 302℉ |
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N25UH-N50UH |
+180℃ / 356℉ |
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N28EH-N48EH |
+200℃ / 392℉ |
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N28AH-N45AH |
+220℃ / 428℉ |
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Standard Sizes |
The diameter ranges typically from 6.00 mm to 60.00 mm (0.24 to 2.36″). The height ranges from 1.500 mm to 30.00 mm (0.06″ to 1.18″). The Inner diameter ranges from 2.00 mm to 23.00 mm (0.08″ to 0.91″). Adhesive force ranges from 0.4 KG to 120.00 KG. |
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Magnetic Direction Required |
Thickness, Axial, Radial, Radiation, Multi-pole, etc.. |
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Coating Option |
Zn, Ni, Epoxy, Au, Ag, Passivated, etc... |
Salt spray test can reach 38-96 hours |
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Tolerance |
Lowest can reach ±0.01mm |
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Size Range |
0.2 to 150mm |
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Advantages of Ring Magnets
Uniform magnetic field
One of the main advantages of ring magnets is their ability to produce an extremely uniform magnetic field. This means that the magnetic field strength remains consistent across the entire exposed circular surface of the magnet.
Compact Design with High Performance
Just like disc magnets, ring magnets are efficient in space-limited applications. Their strong magnetic fields make them incredibly useful for many projects, even in tight spaces.
Impressive Magnetic Strength
Neodymium ring magnets are some of the strongest magnets available. They can generate powerful magnetic fields despite their smaller size.
Durable and Long-Lasting
Neodymium is naturally resistant to corrosion, especially when coated with a protective layer. This means ring magnets are built to last, even under challenging conditions.
Cost-Effectiveness
Ring magnets offer more power per unit size than other magnet shapes, such as blocks. The small size combined with strong holding power makes them more cost-effective in terms of performance.
Enhanced Configuration Options
The hollow center and thin radial shape of ring magnets give them more configuration and integration potential than other types of magnets.
Application of Ring Magnets
Microwave Communication Technology
Ring magnets are utilized in appliances like circulators and isolators in the realm of microwave communication technology. By producing a powerful magnetic field that enables effective signal transmission and reception, these magnets aid in the control and direction of microwave signals.
Electrical Engineering
Ring magnets are frequently utilized in electrical engineering applications. They enable the transformation of electrical energy into mechanical motion in actuators, motors, and generators.
Electroacoustic Devices
Ring magnets are used to produce high-quality sound in electroacoustic equipment as speakers, headphones, and microphones. These magnets make it possible for electrical information to be converted into sound waves more precisely and effectively, which improves audio quality.
Magnetic Mechanical Engineering:
Ring magnets are essential for applications in magnetic mechanical engineering, according to this discipline of engineering. They are utilized in magnetic drive systems, magnetic couplings, and magnetic bearings.
Transportation
Ring magnets have revolutionized the transportation industry, particularly in the realm of electric vehicles (EVs) and hybrid vehicles. Their high power-to-weight ratios and compact designs contribute to the overall efficiency and performance of EVs and hybrids.
Magnetic Separation Technology
In the field of magnetic separation technology, ring magnets play a vital role in separating magnetic materials from non-magnetic materials. Magnetic separators, incorporating these magnets, find applications in diverse industries such as mining, recycling, and food processing.
Magnetic Therapy
The versatility of ring magnets extends to the domains of magnetic therapy. Within the realm of magnetic therapy, these magnets find applications in a range of therapeutic devices such as magnetic bracelets and wraps.
The Differences Between Ring Ferrite Magnets and Neodymium Ring Magnets
One of the most significant differences between ring ferrite magnets and NdFeB ring magnets lies in their magnetic properties. Ring ferrite magnets have a relatively low magnetic strength compared to neodymium magnets. The magnetic field strength of a ring ferrite magnet is typically in the range of 0.2 - 0.4 Tesla, while neodymium magnets can have a magnetic field strength of up to 1.4 Tesla or more.
Ring Magnet Production Process
Powder metallurgy
This method involves mixing magnetic materials (such as neodymium) with a binder to create a slurry. Subsequently, the slurry is shaped into the desired ring form and sintered (i.e., heated under pressure) to bond the particles together.
Injection molding
This method involves injecting molten magnetic material (such as neodymium) into a mold to form the desired ring shape. The magnet is then allowed to cool and solidify.
Bonding
This method involves using a binder to bond thin sheets or strips of magnetic material (such as neodymium) together. These sheets or strips are shaped into the desired ring form, and the assembly is left to allow the binder to cure.
Machining
This method involves using machine tools, such as lathes or milling machines, to process blocks or rods of magnetic material (such as neodymium) into the desired ring shape.
Casting
This method involves melting magnetic material (such as neodymium) and pouring it into a mold to form the desired ring shape. The magnet is then allowed to cool and solidify.
Usage Requirements
1.The ring magnet should ensure that the workplace is clean during use,so as to prevent fine impurities such as iron filings from being adsorbed on the magnetic.
2. Ring magnets are suitable for storage in a ventilated and dry room,acidic,alkaline,organic solvents, water.
3. Handle them carefully and avoid placing them in situations where they could cause harm.
4. Keep them away from sensitive equipment, credit cards, and magnetic media.
5. Be aware of temperature limits, as excessive heat can demagnetize specific magnets.
6. When handling the assembly, be sure to take care one by one to avoid the damage of the suction and the collision, and prevent the ring magnet from attracting shocks.
7. Store ring magnets in a secure place, away from children and pets, to prevent accidental ingestion or injury.
Customization Process
Custom Requirements
Start by provide your requirements for custom neodymium magnet product. This can include information on the magnet’s size, shape, strength, coating, and any other special features that the customer may need.
Scheme Design
Based on the your requirements, design the magnet using specialized software such as SolidWorks or AutoCAD. This will allow our to create a 3D model of the magnet, which can be used to verify that it meets the your requirements.
Select the Materials
Choose the appropriate neodymium magnet materials for the specific application of the custom magnet, as well as any other materials needed for the manufacturing process, such as adhesives or coatings.
Sample Confirmation and Production
Before officially commencing mass production, we will first send you samples for your confirmation. Using the design and material selections as a guide, begin fabricating the magnet.
Package and Deliver the Magnet
Once the magnet has been tested and approved, package it carefully to ensure that it is protected during shipping. We will unconditionally resend the product if there are quality issues.
Shipping and Delivery
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Packing |
1. White inner box with cotton plastic. 2. Strong suitable outer carton size. 3. Fully anti-magnetized packaging. 4. Recommend the best solution of shipment for your reference according to order quantities. |
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Shipping Time |
If in stock, free sample and send out on the same day; Out of stock, delivery time is same with mass production. |
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Transportation |
We support express, air, sea, train, truck etc. and DDP, DDU, CIF, FOB, EXW trade term. |
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Payment Method |
Flexible payment methods include T/T in advance and western union and L/C at sight or others. |
Our Factory
The main magnet factory covers an area of 60000 square meters with well-equipped facilities and has over 500 employees.
FAQ
We're well-known as one of the leading ring magnets manufacturers and suppliers in China for over 30 years. With abundant experience, we warmly welcome you to buy high quality ring magnets made in China here from our factory. We also accept customized orders.
Rare Earth Ring Magnet, super magnets, 3 inch ring magnets