Magnetic Products
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Magnetic Products

Our products feature an extensive range of permanent ferrite magnet, NdFeB (Neodymium Iron Boron, Neodymium, Neo), SmCo (Samarium Cobalt), Ferrite (Ceramic), Alnico, Compression Bonded NdFeB, Injection Molded NdFeB, Flexible (calendared and extruded), FeCrCo, Electromagnets, rotor magnets, magnetic systems, magnetic assemblies and magnetic accessories. manufactures and supplies custom magnets to meet the most demanding customer requirements.

Our main customer base is OEM businesses across various industries. However anyone, including members of the public, are welcome to buy from us. If you cannot find the right magnet size or shape, the right magnet type or grade or the right magnet coating type, we can supply you. Custom made magnets can be low in cost - if the required quantities are large enough production costs become low.

Kaiven Magnetech supplies permanent magnets and magnetic assemblies to all Indutries across the globe.

Prototype samples to mass production or stock items to custom design -KaivenMagnetics is a world leader in magnetic technology for providing solutions to your applications.

We can supply magnets with PPAP, FAIR and CofC as required (please contact us to discuss with us your requirements before ordering).All our magnets are ISO9001 certified with RoHS and REACH compliance.We can supply magnets with PPAP or PSW to TS16949 as part of a custom production service. We also have 3D FEA software as part of our complete Technical Support Service.

Custom Permanent Magnets - Different Shapes, Different Sizes, Different Grades, Different Coatings, etc.

We can produce custom permanent magnet shapes and sizes.

We can produce custom magnetic assemblies.

We can produce permanentmagnets to different grades and temperature ratings.

We can produce made-to-order bespoke magnets to customer requirements.

We can produce permanent magnets with different coatings.

We can produce permanent magnets with different dimensional tolerances.

We can produce and supply NdFeB, SmCo, Alnico, Ferrite, Compression Bonded, Injection Molded, Plastic, Flexible and FeCrCo magnets.

We also produce and supply Electromagnets, Electro-permanent magnets, Solenoids, Soft Ferrites and Powdered Irons.

We do this by quotation, working with the customer to ensure they have the best product for their application with full technical support including 3D FEA magnetic analysis where applicable.

Custom magnets = Bespoke Magnets = Made to Measure Magnets = Made to Order Magnets = Customer Design Magnets = Non-Standard Magnets = Special Magnets.

What have application of Permanent ferrite Magnets?

Neodymium (NdFeB) magnets are the strongest type of permanent magnet made. They have replaced other types of magnets in the many applications in modern products that require strong permanent magnets, such as motors in cordless tools, hard disk drives, and magnetic fasteners. Because neodymium magnet have greater strength which allows the use of smaller, lighter magnets for a given application.

For examples: Sensor;Head actuators for computer hard disks; Magnetic resonance imaging; Magnetic guitar pickups; Loudspeaker and headphones; Electric motors; Spindle and stepper motors; Drive motors for actuators; Switched reluctance and Vibration motor; Linear motors, Starter motors; Rotors for synchronous motors; Asynchronous and Brushless motors; Servo, Torque and Elevator motors; Electric generators for wind turbines; High speed motor, DC / AC motors.


Order Permanent Magnets, Neodymium arc magnets, NdFeB arc magnets, Neodymium segments, NdFeB segments for Rotor, Motor & Generator

*Shaped magnets for motor & generator assembly onto rotors

*Shaped magnets for assembly onto rotors

*Shaped magnets to create rings

*Can be true arc magnets or shaped arc magnets (segment magnets)

*Breadloaf magnet shapes possible

*Concentric radii or radii with different centres possible

*Sides can be parallel, or tapered due to angle requirement

*Various magnet shapes possible, perhaps with a requirement for tooling

*SmCo, Ferrite, Alnico and Bonded versions possible

*Custom production i.e. made to order

*Maximum operating temperature 80 °C for standard grades of Neodymium (NdFeB), more for higher Hci grade Noedymium (NdFeB) types e.g.60 °C for N50-N54,100 °C for N33M-N50M, 120 °C for N33H-N48H, 150 °C for N30SH-N45SH, 180 °C for N30UH-N38UH, 200 °C for N30EH-N35EH and 220/230 °C for N28AH/VH-N30AH/VH.


Neodymium (NdFeB) arc magnets, Neodymium (NdFeB) segment magnets and similarly shaped NdFeB (Neodymium) magnets with a maximum operating temperatures of up to 230 °C can be supplied by special request. Please contact us.

Our neodymium (NdFeB) permanent magnets are nickel plated unless stated otherwise - other coatings are possible.

Other sizes, shapes, grades and coatings of Motor, Generator, Rotor Permanent Magnets (NdFeB arc segment block) are available.



Custom Permanent Magnets - Different Shapes, Different Sizes, Different Grades, Different Coatings, etc.

Kaiven Magnet also produces Magnetic Sub-Assemblies - components comprising one or more magnets that are used to create larger assemblies.

We have a factory in China for low cost magnetic assembly production while retaining control of the quality.

Magnetic Components, Magnetic Sub-Assemblies and Magnetic Assemblies all possible.

We serve all Industries across the World.

We can assist with magnetic assembly design, magnet assembly FEA modelling, magnetic performance improvements and cost reduction.

We can work under Non-Disclosure Agreements (NDA / Confidentiality Agreement).


Rotor assemblies for drives, generators, motors

Motor designs, Generator designs

High Speed Rotors

Hybrid Drive assemblies

Regenerative Braking assemblies

Consumer Electronics assemblies

Magnetic Pump Coupling assemblies

Wind Turbine assemblies

Automotive assemblies

Aerospace assemblies

Hysteresis assemblies

Sensor magnets (for Reed Switches, Hall Effect Devices, etc)

Sensor housings

Clamping assemblies

Levitation assemblies

Magnetic drives

Halbach Arrays


Tuned field output assemblies

Magnetically balanced rotor assemblies

Mechanically balanced rotor assemblies

Magnetically and Mechanically balanced rotor assemblies

Specialised magnetisation assemblies

Overmolded assemblies

Insert molded assemblies

Electromagnets and Solenoids

Magnetic actuators

University Research prototypes, etc

We can supply complete magnetic assembly parts or assemble magnetic sub-components. If a customer requests a preferred or approved supplier or subcontractor for a particular item on the BoM (Bill of Materials) or drawing, we will use them. If you would like a quotation or would like to know if we could supply you with a magnet or magnetic assembly, please contact us.

Kaiven Magnet can design, produce and supply Magnetic Rotor Assemblies to customer requirements.

Whether it is a simple rotor asssembly for low cost low speed use or a high specification magnetically balanced rotor with mechanical balancing, we can produce and supply high quality magnetic assemblies for your application.

Magnetic Balancing - some applications require the back-emf (generated voltage) in each phase to be of equal magnitude (to keep the power electronics simpler and lower cost). To allow this, it is possible for the magnetic output of each magnet to be measured and then the magnets can be assembled onto the rotor so that the total magnetic field each phase will see is as equal as possible. This is called magnetic balancing (or magnetic tuning).

High Speed Rotors - in some applications the magnets need additional sleeving to assist in holding the magnets in place. We work with customers, often using their designs, to ensure the magnets stay on the rotor at all times.

Mechanical Balancing - high speed rotors often require mechanical balancing to limit bearing damage, internal stresses and strains, noise, etc. We can balance the rotors to meet customer requirements.

Assembling - we can either assemble fully magnetised magnets onto the rotor. Or we can look to assembly unmagnetised magnets onto the rotor and magnetise afterwards in situ (if the design allows post-assembly magnetising to be feasible).

Machining - sometimes, especially for adding sleeves to rotors or when the air gap from rotor to stator is very small, the assembly outer radius needs to be precision ground. We can do this (but be aware that this may possibly affect the magnetic balancing - if you require more information on this effect please contact us).

Magnetic rotor assemblies include:- motors, generators, high speed actuators, wind turbines, magnetic pump couplings, printer rotors, direct drives, etc.


Kaiven is a high-tech magnetic material manufacturer with advanced R&D, excellent manufacturing ability and outstanding sales team. Amount of our productions exported to USA, French, German, Italy , Korea and more about 20 countries and districts. 
In order to insure the top priority of our quality, Kaiven applied many quality control measures and systems including factory 5S Management, ISO14001, ISO9001, ISO/TS16949 and etc.


Kaiven has the highest quality standard, well trained management, an experienced engineering team, premium magnetic materials, world class manufacturing technology,and first-class service to provide our customers the best possible magnet supplying and magnetic solutions. Kaiven welcomes your cooperation.
If you would like to have a question then get in touch today, we are ready to assist 24/7.
We welcome your cooperation and we will develop with you.

 Factory-direct Connectivity Solutions.
 High quality, Competitive Price.
 Custom-tailored solutions.
 Problem-solving approach.
Zhejiang Kaiven Magnet Company, Ltd., is a leading permanent ferrite magnet and magnetic assembly manufacturer in China.

permanent ferrite magnet 

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  Cailu Industrial Zone, Dongyang City, Zhejiang Province, China.


  +86-579-8672 6722

  +86-579-8672 6118

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