Product Overview
Planar Halbach Array
Planar Halbach array is a two-dimensional permanent magnet assembly designed to create a strengthened magnetic field on one working surface while reducing stray field on the opposite side. Compared with a simple flat magnet plate, a planar Halbach array can provide higher usable flux density, improved field shaping and better magnetic efficiency in a compact structure.
A typical planar Halbach array includes multiple precision magnets arranged in a 2D rotating magnetization pattern, a carrier plate, adhesive, positioning fixture, optional protective cover or potting layer, and final magnetic inspection. The performance depends on magnet grade, tile size, magnetization direction, pole pitch, assembly tolerance and working gap.
Ningbo Vanguard Technologies supplies customized planar Halbach arrays using NdFeB, SmCo or ferrite magnets according to required field strength, working area, working gap, operating temperature, installation method and cost target. We support magnet layout design, grade selection, fixture bonding, field mapping, dimensional inspection and batch production.
Whether you need prototype magnetic plates for levitation, holding, linear motion, scientific research or magnetic test platforms, Vanguard can provide sample assembly within 10-20 days after drawing and specification confirmation.
Quick View
Planar Halbach Array Selection Snapshot
2D Field
Planar Magnetic Layout
Two-dimensional magnet patterns create controlled field distribution over a flat working area.
One-Sided
Surface Enhancement
Strengthens the usable working surface while reducing stray field on the opposite side.
Field Map
Magnetic Verification
Surface Gauss mapping and working-gap field scans can be provided for precision modules.
10-20 Days
Prototype Lead Time
Fast sampling after array layout, magnet grade, carrier and inspection method are confirmed.
Array Design Focus
Working Surface
High flux
Leakage Control
Back side
1Layout ReviewArea, pitch, field target
2Grade MatchBr, Hcj, temperature
3Carrier PlanPlate, holes, cover
4Array AssemblyPolarity, bonding, spacing
5Field CheckGauss, mapping, report
Key Applications
Magnetic Levitation
Enhanced one-sided magnetic fields for levitation plates, magnetic guideways, demonstration systems and low-friction motion platforms.
Magnetic Holding Plates
Custom magnetic plates for workholding, positioning fixtures, inspection fixtures and strong one-sided attraction systems.
Planar Motors
Two-dimensional magnet arrays for planar motors, XY motion platforms, precision stages and direct-drive motion systems.
Scientific Equipment
Controlled magnetic field platforms for laboratories, magnetic experiments, field shaping and research prototypes.
Sensors & Test Fixtures
Magnetic reference plates and field sources for sensor calibration, magnetic imaging and test fixture development.
Custom Magnetic Modules
Planar magnetic modules for automation, separation, magnetic coupling experiments and special engineering applications.
Typical Array Specifications
The following options are commonly used for custom planar Halbach arrays. Final specifications are confirmed according to working area, target flux density, pole pitch, magnet size, carrier design and testing requirements.
|
Item |
Available Options |
Engineering Notes |
|
Array Type |
2D Halbach plate, checkerboard pattern, modular tile array, custom field pattern |
Pattern is selected according to field direction, uniformity requirement and working surface size. |
|
Magnet Material |
NdFeB, SmCo, ferrite |
NdFeB offers high field strength; SmCo suits high temperature; ferrite is economical for large-area arrays. |
|
Magnet Shape |
Cube, rectangular block, square tile, custom profile |
Magnet shape and size affect pole pitch, field uniformity and assembly difficulty. |
|
Magnetization |
Axial, transverse, lengthwise, custom vector direction |
Each magnet requires accurate magnetization direction to form the designed planar Halbach pattern. |
|
Carrier Material |
Aluminum, stainless steel, carbon steel, engineering plastic, epoxy carrier |
Carrier affects strength, weight, corrosion resistance, mounting method and magnetic circuit behavior. |
|
Surface Protection |
NiCuNi, epoxy, Zn, parylene, stainless cover, potting resin |
Protection is selected according to humidity, handling, chemical exposure and temperature. |
|
Inspection |
Dimension, polarity, surface Gauss, 2D field mapping, adhesive coverage, appearance |
2D field mapping is recommended for arrays with strict uniformity or working-area requirements. |
Magnet Material & Grade Selection
|
Material |
Common Grade Range |
Temperature Capability |
Best Used For |
|
NdFeB |
N35-N52, M/H/SH/UH/EH series |
Approx. 80-200 °C depending on grade |
Compact planar Halbach arrays requiring high surface flux density and strong one-sided field. |
|
SmCo |
SmCo5, Sm2Co17 series |
Approx. 250-350 °C depending on grade |
High-temperature, vacuum, aerospace, scientific and harsh-environment planar arrays. |
|
Ferrite |
Y30, Y30BH, Y35, C5, C8 |
Approx. 200-250 °C depending on grade |
Cost-sensitive, large-area, education and demonstration Halbach plates. |
Selection note: Planar Halbach array performance should be confirmed together with working area, working gap, required surface flux, pole pitch, magnetization direction, temperature and assembly tolerance. Vanguard can recommend magnet grade and 2D layout after reviewing your drawing or magnetic field target.
Available Assembly Configurations
Standard Planar Array
Magnets are arranged in a 2D Halbach sequence to enhance the field above the working surface.
Magnetic Plate Assembly
Magnet tiles are bonded into aluminum, stainless or engineered carriers for stable installation.
Encapsulated Array
Magnets can be sealed by epoxy, stainless cover, plastic housing or potting resin for protection and safety.
High-Uniformity Plate
Magnet tolerance, spacing and 2D field mapping are controlled for applications requiring consistent field distribution.
Modular Tile Array
Multiple modules can be combined to build larger magnetic surfaces while keeping production and handling practical.
Prototype Array Kit
Small-batch planar arrays with polarity marking, magnetic report and packaging by set for testing and validation.
Design Points for Planar Halbach Arrays
Planar Halbach arrays require careful control of two-dimensional magnetization direction, tile spacing, pole pitch and assembly accuracy. During design review, Vanguard focuses on target field strength, working area, working gap, magnet grade, pattern layout, carrier material, adhesive strength, coating and operating temperature.
For magnetic platforms and precision equipment, field consistency across the working surface is especially important. Magnet tolerance, tile position, surface flatness and 2D field mapping should be reviewed together with the final application.
One-Sided Field
The layout strengthens the working surface field and reduces leakage flux behind the array.
2D Magnetization
Each tile must follow the designed vector direction to create the correct planar field pattern.
Field Uniformity
Pole pitch, spacing and magnet consistency are controlled to improve field distribution across the working area.
Assembly Accuracy
Positioning fixture, adhesive coverage, flatness and 2D field mapping help ensure stable magnetic output.
Manufacturing & Quality Assurance
Our planar Halbach array process includes incoming magnet inspection, carrier inspection, polarity and magnetization direction verification, fixture positioning, adhesive dispensing, magnet placement, curing, dimensional inspection, surface Gauss testing, optional 2D field mapping and final packaging.
|
Process Step |
Control Target |
Typical Inspection Method |
|
Magnet Inspection |
Grade, size, coating, polarity and magnetization direction |
Gauss meter, flux meter, polarity checker, caliper and visual inspection. |
|
Carrier Check |
Length, width, flatness, hole position, surface condition and coating |
CMM, height gauge, caliper, visual check and drawing-based dimensional inspection. |
|
Bonding & Assembly |
2D magnet sequence, spacing, adhesive coverage and curing control |
Assembly fixture, process record, visual check and sample strength validation. |
|
Magnetic Verification |
Surface field, polarity sequence, working side strength and leakage side reduction |
Surface Gauss test, polarity check, flux test and 2D field mapping when required. |
|
Final Array Check |
Appearance, marking, dimensions, packaging and set consistency |
Visual inspection, dimensional report, magnetic report and packing checklist. |
Available Custom Features
Custom Working Area
Array length, width, thickness, carrier hole position and mounting features can be produced according to drawings.
Custom Pole Pattern
Pole pitch, tile count, magnet size and field direction can be matched to your field target.
2D Field Mapping
Surface Gauss, working-gap field scan and magnetic consistency report can be provided for precision applications.
Surface Protection
Nickel, epoxy, zinc, parylene, stainless cover, plastic shell or potting options are available.
Polarity Marking
N/S marking, arrow marking, color marking and assembly orientation labels can be provided.
Inspection Report
Dimensional report, magnetic report, 2D field mapping report and batch traceability documents are available.
Information Needed for Fast Quotation
To quote a planar Halbach array quickly, please provide array drawing, working length, working width, thickness, pole pitch, magnet size, magnet material, magnetization direction, required surface Gauss or working-gap field, carrier material, coating requirement, annual quantity and testing standard.
If the design is still under development, you may share the application, working gap, target field, working area, operating temperature and whether backside leakage field must be reduced. Our engineering team can help recommend a practical planar Halbach layout.
Frequently Asked Questions
What is the advantage of a planar Halbach array?
It strengthens the magnetic field on one working surface while reducing leakage field on the back side, making the magnetic field more efficient and easier to control.
Can you customize the working area and pole pattern?
Yes. Working length, width, pole pitch, tile size, magnetization direction and carrier design can be customized according to drawings or field targets.
Which magnet material is best for planar Halbach arrays?
NdFeB is most common for high field strength. SmCo is recommended for high-temperature or harsh environments. Ferrite can be used for large-area, cost-sensitive or educational arrays.
Can you provide 2D field mapping data?
Yes. Surface Gauss testing, working-gap field scan, polarity sequence check and 2D magnetic consistency reports can be provided according to project requirements.
Is assembly difficult for planar Halbach arrays?
Yes. Magnet direction and attraction forces make assembly more complex than a normal magnetic plate. We use fixtures, polarity checks and controlled bonding to improve accuracy and consistency.
What is the lead time for custom planar Halbach arrays?
Prototype lead time is usually 10-20 working days after drawing confirmation. Mass-production lead time is typically 25-45 working days depending on size, magnet grade, fixture, coating and field mapping requirements.
