Multipole NdFeB Ring Magnet for Brushless Rotor
Round Magnet
sample for Reference: N42 Neodymium Hollow Cylindrical Magnet. In This Document, Tubular Magnets Are Used as the Main Product Name.
|
Material |
ndFeB |
sintered NdFeB |
|
grade |
N42 |
n35-N52, H, Sh, Uh, and Eh Options |
|
outer Diameter |
1 In/25.40mm |
outer Diameter |
|
inner Diameter |
3/16 in/4.7625mm |
ID |
|
length |
1/8 in/mm |
L |
|
dimensional Tolerance |
/-0.004 in/Approx. /-0.102 |
specify OD, ID, L, and Concentricity Respectively |
|
coating |
nickel |
Ni-cu-ni Or Other Corrosion Resistant Coating |
|
magnetization |
penetration Thickness |
axial, Radial, Or Multipole |
|
weight |
0.0256875 Lbs/Approx. 11.65G |
calculated from the Final Size |
|
reference Tension |
12.41 Lbs/Approx. 5.6 3,000G |
state Steel Plate, Air Gap, Contact Conditions and Test Methods |
recommended Finished Product Inspection: Outer Diameter, Inner Diameter, Length, Wall Thickness, Roundness, Concentricity, End Face Parallelism, Radial Runout, Pole Number, Pole Arc, Pole Distribution, Surface Flux Curve and Total Magnetic Flux.
tubular magnet
reference sample: N42 neodymium hollow cylindrical magnet. In this document, tubular magnets are used as the main product designation.
|
Parameters |
reference Sample Value |
recommended Product Page Entries |
|
materials |
ndFeB |
sintered neodymium iron boron |
|
grade |
N42 |
n35-N52, H, SH, UH, and EH options |
|
outer diameter |
1 in/25.40mm |
outer diameter |
|
inner diameter |
3/16 in/4.7625mm |
ID |
|
length |
1/8 in/3.175mm |
L |
|
dimensional tolerance |
/-0.004 at/about. /-0.102mm |
specify OD, ID, L, and concentricity separately |
|
coating |
nickel |
Ni-cu-ni or other corrosion resistant coatings |
|
magnetization intensity |
through thickness |
axial, radial or multipolar |
|
weight |
0.0256875 lb./approx. 11.65g |
calculated from final dimensions |
|
reference tension |
12.41 lbs./approx. 5.63kg |
condition steel plate, air gap, contact condition and test method |
recommended finished product inspection: outer diameter, inner diameter, length, wall thickness, roundness, concentricity, end parallelism, radial runout, number of poles, pole arc, magnetic pole distribution, surface flux curve and total magnetic flux.
Our Advantages
In-House Magnet Manufacturing & Assembly | MSUPER
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In-House Magnet Manufacturing & Assembly | MSUPER
Explore MSUPER's in-house magnet manufacturing, from magnetic circuit design and precision machining to plating, magnetization and final assembly.
Precision Custom Magnet Engineering Services | MSUPER
Get custom magnetic solutions supported by magnetic field simulation, drawing-based engineering and precision tolerances of ±0.02–0.03 mm.
Rapid Magnet Prototyping & Fast Delivery | MSUPER
Accelerate magnet projects with responsive engineering, solutions in as little as 8 hours, samples from 2 days and efficient bulk-order delivery.
Magnet Quality Control & Batch Consistency | MSUPER
Ensure dependable magnet performance through 10-point inspection, two-hour IPQC checks, magnetic testing, coating reports and controlled batch consistency.
Application
Industrial Robot Motor Magnets for Servo Systems | MSUPER
Custom NdFeB motor magnets for industrial robots and servo systems, delivering high torque, precise motion, thermal stability and reliable automation.
Agricultural Drone Motor Magnets | High-Efficiency NdFeB
Lightweight, high-efficiency NdFeB motor magnets for agricultural drones, supporting stable lift, longer flight time and reliable crop-spraying operations.
EV Traction Motor Magnets for Electric Vehicles | MSUPER
High-performance NdFeB magnets for EV traction motors, engineered for high torque, thermal stability, energy efficiency and dependable electric mobility.
High-Speed CNC Spindle Motor Magnets | MSUPER
Precision NdFeB magnets for high-speed CNC spindle motors, providing stable rotation, low vibration, heat resistance and consistent machining performance.
Elevator Traction Motor Magnets | Reliable NdFeB Solutions
High-strength NdFeB magnets for elevator traction motors, supporting smooth starts, quiet operation, energy efficiency and reliable high-rise service.
MOTOR MAGNET RFQ GUIDE
To recommend the appropriate magnet material, grade and manufacturing solution, please provide your motor application, technical drawing, operating conditions, required quantity and target delivery date. Our engineering team will evaluate your requirements and provide a customized solution.
What Information Is Required for a Motor Magnet Quotation?
Please provide your company name, business email, country, motor type, application, magnet shape, dimensions, estimated quantity and target delivery date. Uploading a 2D or 3D drawing will help us evaluate the project and prepare an accurate quotation more efficiently.
Can You Manufacture Custom Motor Magnets from Drawings or Samples?
Yes. We manufacture custom arc segment magnets, ring magnets, block magnets, rotor magnet assemblies and segmented magnet assemblies based on customer drawings, samples or motor performance requirements. Please provide dimensions, tolerances, material grade, coating and magnetization details whenever available.
How Do I Select the Appropriate Magnet Grade and Coating?
Please tell us the maximum operating temperature, motor speed, working environment, corrosion risk and required magnetic performance. Based on these conditions, our engineers can recommend an appropriate NdFeB grade, such as standard, high-temperature or high-coercivity material, together with a suitable protective coating.
What Technical Parameters Should Be Included in the Drawing?
The drawing should preferably include magnet shape, dimensions, dimensional tolerances, material grade, coating, magnetization direction, pole configuration, magnetic performance requirements and assembly position. For high-speed rotors, please also provide the maximum rotational speed and relevant mechanical requirements.
What Are the MOQ, Prototype and Production Lead Time?
MOQ and lead time depend on the magnet shape, material grade, tooling requirements, coating, magnetization and assembly complexity. Please provide your prototype quantity, estimated annual demand and target production date. We will confirm the sample plan, mass-production MOQ and delivery schedule after an engineering review.
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