Magnetic Assembly
Permanent magnets integrated with a shaft, core or carrier to the approved configuration.
MAGNETIC ASSEMBLIES
Rotor AssembliesMagnetic performance.
Mechanical integrity.
Magnets, shafts and retention integrated for motor and drive applications.
Submit a Rotor DrawingView Rotor ConfigurationsApplication overview
A rotor must meet magnetic and mechanical requirements at the same time. We review the magnet layout, shaft interfaces, retention, operating speed and temperature together, with balance and inspection requirements defined before production release.
FORMS & CONFIGURATIONS
Rotor Construction and Shaft Interfaces.
Representative product forms. Final geometry, dimensions and material are confirmed against your drawing.
High-speed rotor
Carbon-fibre sleeved for high rotational speed
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Segmented rotor
Segmented magnets assembled onto a shaft
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Bonded rotor
Bonded magnet ring carried on a steel hub
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Product forms
Segmented permanent-magnet rotors and sleeved shaft assemblies.
View Configuration GuideWHAT WE SUPPLY
A Rotor, Ready for Integration.
Mechanical Interfaces
Drawing-defined fits, retention features and mating components.
Delivery Scope
The bill of materials and inspection plan define the supplied assembly and its release records.
DESIGN & SELECTION
Review a Rotor Configuration.
- 01Shaft
Datums, fit and runout
- 02Magnets
Material, polarity and position
- 03Retention sleeve
Material and retention method
- 04Locating interface
Axial stop and assembly reference
Select a category to see the inputs to confirm.
Review This ConfigurationSelection identifies the review scope. Materials, ratings and acceptance criteria remain subject to engineering confirmation.
A good fit when
- Programs that need a ready-to-integrate rotor rather than loose magnets
- Servo, traction, generator and high-speed motor architectures
- Projects requiring matched magnets, controlled orientation and documented balance
- OEM teams that want one interface for magnet, mechanical and validation engineering
Check before release
- High-speed retention must be validated at overspeed and operating temperature
- Magnet-to-shaft concentricity, runout and balance interact with the motor's vibration budget
- Adhesive cure, sleeve interference and thermal expansion can shift the magnetic or mechanical working point
- Rotor handling, magnetized shipping and safety controls must be agreed before logistics planning
ENGINEERING REVIEW
Resolve Retention and Runout.
Define speed and load cases, shaft datums and magnet retention before agreeing balance or runout limits.
Motor duty
Share speed, torque, power, duty cycle, temperature at the rotor and the electrical operating point. Include overspeed and fault cases.
Mechanical interface
Provide shaft datum, bearing arrangement, rotor OD, stack length, runout, fit, key or spline details and assembly sequence.
Magnetic target
Provide pole count, magnetizing direction, air gap, flux or back-EMF target, harmonic limits and grade preference if known.
Retention concept
State sleeve, band, adhesive, pocket, bridge or overmold concept, plus burst-speed, shock, balance and service-life requirements.
QUALITY & RELEASE
Specify Rotor Test Conditions.
Verification follows the component’s function and the agreed inspection plan.
Dynamic balance
Review details
Define balance grade, correction plane, speed, fixture and residual unbalance limits. Report the condition of the final assembly.
Overspeed and retention
Review details
Validate the agreed overspeed and thermal condition, with inspection for movement, cracks, adhesive failure or sleeve damage.
Flux and waveform
Review details
Map air-gap flux and, where applicable, verify back-EMF waveform, pole position and harmonic content against the motor target.
Runout and concentricity
Review details
Measure critical diameters, shaft runout, magnet-to-shaft concentricity and bearing datum relationships on the released assembly.
PRODUCT QUESTIONS
Rotor Integration Questions.
Can you supply the complete rotor, not only magnets?
The assembly scope can include magnets, shaft, hub, sleeve or band, adhesive, balancing and agreed validation. The exact make-or-buy boundary should be defined from the drawing and motor interface.
What is the most important rotor input?
The most useful starting package combines motor duty, rotor geometry, air gap, speed and temperature with the magnetic target and retention concept.
Do you provide balance and flux reports?
Balance, dimensional, flux and waveform reports can be aligned to the program's acceptance plan. The required fixture, sample quantity and limits should be agreed before production.
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Define Your Rotor Interfaces.
Send the shaft drawing, operating speed and retention requirements.
Discuss This Specification