NdFeB Halbach Array Magnets

Halbach Array Magnets, NdFeB Halbach Magnets, Halbach magnetic ring, Magnetic-Bearings & Halbach Arrays, Halbach Array Cylinder Neodymium Segment Magnets China Supplier

NdFeB Halbach Array Magnets are a special magnetic component consisting of NdFeB permanent magnets that can provide controlled high magnetic field strength without the use of magnetically permeable
materials. Halbach magnets, with the smallest magnet through a certain direction of magnetization to produce the strongest magnetic field to reduce the cost of materials.

Halbach Array Magnets

The most obvious benefit of a Halbach Array is that the field produced is very strong when compared to other arrays having the same amount of the magnet alloy. The arrangement essentially increases the efficiency of the magnetic circuit. A Halbach array is an arrangement of permanent magnets that causes an one-sided flux, i.e. the magnetic field is maximized on one side, while minimized on the other.

NdFeB Halbach Magnets

Construction

The Halbach component is made of a variety of shapes version, with ring array and linear array and customized design dimensions. You can see from the design of the designed each arc has a direction of magnetization, making the magnetic field through the central air gap, and then be guided through the magnet material itself around. The ring array / linear array can be made from more arcs (the greater the number of segments, the better of the field uniformity in the center air gap. MPCO MAGNETICS can design, produce and supply Halbach Arrays per customer requirements.

Characteristic of Halbach Array Magnets

Characteristic of  Halbach Array Magnets

● Power density is big
Compared with the traditional permanent magnet motor structure, Halbach magnets design motor can effectively reduce the size of the motor to and enhance the motor power density. This is because the Halbach magnetic ring after disassemblied the parallel magnetic field and the radial magnetic field overlap with each other so that the other side of the magnetic field strength greatly improved.

Halbach magnet structure

● The rotor does not need a chute
In the traditional permanent magnet motor, due to the inevitable existence of air gap magnetic field harmonics,generally in the fixed rotor structure to take the chute to weaken its impact. In the Halbach motor, because the air gap magnetic field sine distribution is high, harmonic content is small, so the stator without chute.

● The rotor can be made of non-core material
Since the unilateral magnetic field distribution produced by the self-shielding effect of the Halbach magnet eliminates the need for the rotor to provide a path for the magnetic material, which not only provides a larger choice for the rotor material, but also allows the system to have a lower moment of inertia and good attached performance.

● Permanent magnet utilization is high
As the Halbach magnet is divided into magnetized results, resulting in its permanent magnet operating is higher that generally more than 0.9,it enhances the utilization of permanent magnets.

Application of Halbach Magnet

Halbach Magnet’s main function is holding, fixturing, linear coupling application, so it is mainly used for motor, generator, magnetic resonance, magnetic levitation high-speed rail,pre-polarization, chemical single crystal growth. For example, the traditional permanent magnet motor often use distributed winding to weaken the influence of harmonic magneto motive force. In the Halbach motor because of its high magnetic field sine distribution, harmonic magnetic field less affected, it can be used centralized winding. With Halbach motor magnet arrangement, can reduce the torque ripple of the motor, so the bearing requirements for the motor greatly reduced.

In addition, the magnetic levitation super high-speed rail is the principle of passive rejection, its periphery is surrounded by a series of magnets. These magnets are arranged in the Halbach array so that the train has an outward magnetic force, not to the passenger’s end. Each cabin is suspended in the air, not contact with the ground, that makes running up without friction. It is because there is no friction and close to the vacuum, it makes the train can achieve very fast speed.

We can manufacture other Halbach Arrays upon request. For example, the ring can be made from more arc segments (the higher the number of segments, the better the uniformity of field within the central air gap, but the assembly cost increases) or we can produce to a different magnetic field pattern (multiple pole pairs).Typical uses for Halbach Arrays include motors, generators, R&D, medical, magnetic levitation, etc.

Please be aware that the lead time for making the Halbach Array is typically 11-12 weeks. If ordered alongside other products from our extensive range of magnets, we would ship the NdFeB Halbach Array separately and we would inform soon after placing your order of the estimated delivery date for the Halbach Array.

Neodymium Halbach Array Magnets

Neodymium Halbach Array Magnet, Cube Neodymium Halbach Magnets with hole, Super strong ndfeb halbach array cube magnet, Customized Halbach Neodymium Magnet, Neodymium Holding Halbach Arrays, Permanent magnet assembly for Halbach linear array China factory

Neodymium Halbach Array Magnet Technical Specifications:

Mold No.: MPHARM-13
Shape: Cube
Dimension: 10mm x 10mm x 10mm
Grade: N42
Plating: Ni-Cu-Ni ( Nickel )
Material: NdFeB
Performance (Gauss): 4900
Vertical Pull (Kg): 4.8
Slide Resistance (Kg): 0.9
Max Temp (degrees C): 80
Fixing: 2mm hole

Feature:
10mm x 10mm x 10mm cube.

Each magnet has its north and south pole on the opposing faces with holes.
2mm central hole through parallel faces to the magnetic axis.
Each magnet can support a steel weight of up to 4.8kg vertically from the magnetic face when in flush contact with a mild steel surface of equal thickness. neo linear halbach arrays
Coated with three layers of nickel, copper and nickel to reduce corrosion and provide a smooth finish.

Halbach Arrays Alternating Polarity

Halbach Arrays Alternating Polarity

1 Compared with the traditional structure of the permanent magnet motor, the mutuals uper position radial magnetic field strength on the other side so greatly enhance this would effectively reduce the volume of the motor,to enhance the power of the motor density.

2 rotor is no longer needed chute
In conventional permanent magnet motor, due to the inevitable presence of the air gap magnetic field harmonics, in general, based on the rotor chute weaken its impact. In Halbach motor, because the air gap magnetic field distribution of the higher degree sinusoidal harmonic content is small, so the rotor without a chute.

3 rotor can be non-core material
Halbach magnet because unilateral field shielding effect resulting from the distribution of the magnetic material for the rotor is no longer necessary to provide access, not only to provide a larger selection of materials selected from the rotor, and the system may have a lower moment ofinertia and less good performance should be attached quickly. block halbach array permanent magnets

4 high efficiency permanent magnet
Due to the results of Halbach magnetized magnets, which leads to higher operating point of the permanent magnet, generally more than 0.9, to improve the utilization of the permanent magnet.

5 can use a centralized winding
Permanent magnet motors are often used in traditional distributed windings to weaken the influence of harmonic MMFs. In Halbach motor because of its high degree of sinusoidal magnetic field distribution of the harmonic magnetic field has little effect, it can be centralized winding.
Motor using Halbach magnet arrangement can reduce the torque ripple of the motor, thus greatly reducing the requirement for the motor bearings.

(A) radial magnet arrangement of the magnetic field distribution
(B) arranged in parallel magnetic field distribution
(C) Halbach arrangement of the magnetic field distribution

Super strong ndfeb halbach array block magnet

Neo Linear Halbach Arrays, Super strong ndfeb halbach array block magnet, Customized Halbach Neodymium Magnet Assemblies, Neodymium Linear Motor Halbach Arrays, Halbach Block NdFeB Magnet China factory

Neo Linear Halbach Arrays Technical Specifications:
Material Neodymium Magnet
Mold No.: MPHARM-12
Max. work Temp.: 80 ℃
Magnet material: NdFeB N45
Housing material: steel alloy
Coating  Zinc
Magnetism direction K2 assembled
Lead Time About 30 days
Sample Avaliable
Certification ISO9001
Tolerance +/- 0.05mm

Neo Linear Halbach Arrays With respect to the conventional motor, Halbach motors are the following advantages

Neodymium Halbach Array Magnet

Neo Linear Halbach Arrays

Block Halbach Array Permanent Magnets

Halbach Array Magnets

Halbach Array Permanent Magnets

Block Halbach Array Permanent Magnets, Super strong ndfeb neodymium halbach array magnet, Customized Halbach Array Neodymium Magnet Assemblies, Neodymium Halbach Array Linear Motor Magnets, N35 Halbach Block NdFeB Magnet China factory

Block Halbach Array Permanent Magnets Technical Specifications:
Material Neodymium Magnet
Mold No.: MPHARM-11
Size: 50mm * 50mm * 30mm
Max. work Temp.: 80 ℃
Magnet material: NdFeB N35
Housing material: steel alloy
Coating Phosphate Passivation
Magnetism direction K2 assembled
Lead Time About 30 days
Sample Avaliable
Certification ISO9001
Tolerance +/- 0.05mm

NdFeB Halbach magnet is a special magnetic component consisting of NdFeB permanent magnets that can provide controlled high magnetic field strength without the use of magnetically permeable materials. Halbach magnets, with the smallest magnet through a certain direction of magnetization to produce the strongest magnetic field to reduce the cost of materials. halbach array magnets

Cylinder Halbach Array Neodymium Magnet Assembly

Neodymium Halbach Array Motor Magnets

N52 Arc Halbach Array Magnet

Circular Halbach Array Assembly

Halbach Array Magnets Assembly

Halbach Array Magnets, Magnet Assembly, Cylinder Halbach Array Neodymium Magnet Assemblies, FLOWER Neodymium Halbach Array Motor Permanent Magnets, N35SH Halbach arc segments NdFeB Magnet, Super strong ndfeb neodymium halbach array magnet China factory

Halbach Array Magnets Assembly Technical Specifications:
Material Neodymium Magnet
Mold No.: MPHARM-10
Max. work Temp.: 150 ℃
Magnet material: NdFeB N35SH
Housing material: steel alloy
Coating Phosphate Passivation
Magnetism direction K3 assembled
Lead Time About 30 days
Sample Avaliable
Certification ISO9001
Tolerance +/- 0.05mm

MPCO Permenent Neodymium Magnet is customized as per your design. The grade of magnet is N35-N52(M,H,SH,UH,EH,AH). If catalogue and technical support of magnet and magnetic assembly is needed, we are reachable on website any time. N35sh neodymium magnet is the most common grade and used widely. If there is no idea of grade, we can recommend you the suitable grade as per the working environment and temperature of permanent magnet. As having strategy cooperation with CHINALCO, our permanent magnet price is very competitive.

Segment NdFeB Halbach Magnets

Cylinder Halbach Magnet

Brass Alloy NdFeB Halbach Array

N45SH Strong Neodymium Halbach Array Magnet

Halbach Arrays

Halbach Arrays can take many forms with many magnetic patterns. Linear Halbach Arrays are magnets in a row to have a magnetic pattern on the one side. Cylindrical Halbach Arrays can have magnetic fields on the inside our outside diameters. Varying pole numbers are possible, depending on the design. Halbach Arrays usually do not require ferromagnetic materials such as mild steel to carry magnetism – the magnets carry and add to the magnetic field within the magnetic circuit to allow for higher magnetic fields to be utilised in the application. Cylinder Halbach Array Neodymium Magnet Assembly

Typical applications for Halbach Array Magnets Assembly include motors, generators, food production, levitation, medical, R&D, University projects, etc.

1.There is a special department for managing the Magnet Assembly, which is consists of two sub-departments; it is leaded by experienced engineers, in order to meet
the customers’ requirements accordingly.
2.In order to make the least delivery time, we will choose the best production technology according to different products for customers.
3.It is a better way to purchase the Magnet Assembly, compared with buying separately; because it decrease the cost of assembling and shipping.
If you need a custom made magnet or magnet assembly, we can help you.
All we ask is that you send us adrawing or sketch of your requirements.
If you are not sure what you need then please feel free to call us and ask for a member of our technical sales team or send an e-mail

Cylinder Rotor NdFeB Magnetic Assembly

Neodymium Halbach Array Magnetic Assemblies

Radially Neodymium Magnet Assembly

Cylinder Halbach Array Neodymium Magnet Assembly

Cylinder Halbach Array Neodymium Magnet Assembly, Circular Neodymium Halbach Array Motor Magnets, N40 Halbach arc segments NdFeB Magnet, Halbach Cylinders and Rings Assemblies, Permanent Super strong ndfeb neodymium halbach array magnet from China

Cylinder Halbach Array Neodymium Magnet Assembly Technical Specifications:
Material Neodymium Magnet
Mold No.: MPHARM-09
Size: 90mm O.D. x 70mm I.D. x 50mm length
(segment magnet length 50mm)
Pole number: 6 poles (18 magnets)
Max. work Temp.: 80 ℃
Magnet material: NdFeB N40
Housing material: steel alloy
Coating NI-CU-NI
Magnetism direction K2 assembled
Lead Time About 30 days
Sample Avaliable
Certification ISO9001
Tolerance +/- 0.05mm

Neodymium Halbach Array Magnet

Neodymium Halbach Array Magnet, Cube Neodymium Halbach Magnets with hole, Super strong ndfeb halbach array cube magnet, Customized Halbach Neodymium Magnet, Neodymium Holding Halbach Arrays, Permanent magnet assembly for Halbach linear array China factory Neodymium Halbach Array Magnet Technical Specifications: Mold No.: MPHARM-13 Shape: Cube Dimension: 10mm x 10mm x 10mm Grade: N42 Plating: Ni-Cu-Ni ( […]

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Neo Linear Halbach Arrays

Neo Linear Halbach Arrays, Super strong ndfeb halbach array block magnet, Customized Halbach Neodymium Magnet Assemblies, Neodymium Linear Motor Halbach Arrays, Halbach Block NdFeB Magnet China factory Neo Linear Halbach Arrays Technical Specifications: Material Neodymium Magnet Mold No.: MPHARM-12 Max. work Temp.: 80 ℃ Magnet material: NdFeB N45 Housing material: steel alloy Coating  Zinc Magnetism […]

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Block Halbach Array Permanent Magnets

Block Halbach Array Permanent Magnets, Super strong ndfeb neodymium halbach array magnet, Customized Halbach Array Neodymium Magnet Assemblies, Neodymium Halbach Array Linear Motor Magnets, N35 Halbach Block NdFeB Magnet China factory Block Halbach Array Permanent Magnets Technical Specifications: Material Neodymium Magnet Mold No.: MPHARM-11 Size: 50mm * 50mm * 30mm Max. work Temp.: 80 ℃ […]

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Halbach Array Motor Neodymium Magnets

Halbach Array Motor Neodymium Magnets, N50 Circular Halbach Array Assembly, Halbach arc segments NdFeB Magnet, Halbach Cylinders and Rings Assemblies, Permanent magnet assembly with Halbach linear array, Super strong ndfeb neodymium halbach array magnet from China

Halbach Array Motor Neodymium Magnets Technical Specifications:
Material Neodymium Magnet
Mold No.: MPHARM-08
Size: 80mm O.D. x 30mm I.D. x 60mm length
(segment magnet length 60mm)
Pole number: 6 poles (12 magnets)
Max. work Temp.: 80 ℃
Magnet material: NdFeB N50
Housing material: steel alloy
Coating NI-CU-NI
Magnetism direction K2 assembled
Lead Time About 30 days
Sample Avaliable
Certification ISO9001
Tolerance +/- 0.05mm

MPCO Magnetics can design, produce and supply Halbach Arrays to customer requirements. We specialise more in the Halbach Array cylinders although we can assist in the supply of any Halbach Array design. n52 arc halbach array magnet

Cylinder Halbach Magnet

Brass Alloy NdFeB Halbach Array

N45SH Strong Neodymium Halbach Array Magnet

NdFeB Halbach Array cylinder

A typical Halbach Array design is the dipole (two pole) NdFeB Halbach Array cylinder where a ring of NdFeB magnets are assembled within a non-magnetic retaining ring to create a high magnetic field within the central air gap – the field lines being uniformly ditributed (homogenous) across the diameter of the air gap.

An example is a Dipole Halbach Array of Magnet Inner Diameter 30mm, Magnet Outer Diameter 80mm and Magnet Axial Length 30mm made using high strength NdFeB magnets (12 arc segments, each with a specific Direction of Magnetisation to pull magnetism around the ring shape of the magnetic assembly) which offers around 1T (10000 Gauss) right in the centre which drops to 0.6T (6000 Gauss) at the axial ends. Longer axial length units give slightly higher magnetic field output with increasing central axial section of more uniform high field output (the field will still drop towards the ends). Lengths of 60mm are possible in this example without the need to split the assembly into two or more axial sections. Higher homogeneity of field (uniformity of cross the diameter) is possible by using more arc segments.

The magnitude of magnetic field within the air gap can be modelled using our 3D Magnetic FEA software although the field can be crudely estimated since it is proportional to the natural logarithm of outer to inner diameter ratio times the Br of the magnetic material.

Cylinder Rotor NdFeB Magnetic Assembly

Neodymium Halbach Array Magnetic Assemblies

Radially Neodymium Magnet Assembly