Magnetic Force

Motor Industry

Electric Machines are the world’s largest consumer of permanent magnetic materials and consequently drive huge amounts of product development globally.

Bunting Magnetics has a wealth of experience in surface mounted machines and internally mounted permanent magnet machines and our engineering team is always ready to help.

Some common design and discussion points are;

  • Production Engineering
    • Magnet Material Choice
    • Magnet Shape / Cost
    • Magnet Performance vs Temperature
    • Magnet Operating Envelope
  • Design for manufacture.
    • Flat to Flat Magnet Assembly
    • Arc to Arc – what diameters to choose
    • Magnet shape tolerancing
    • Adhesive applications
    • Grinding tolerances / allowances
    • Interference fits
    • Avoid Tension – Support
  • Optimising for design, space envelope, torque, inertia.
    • 2D FEA
    • 3D FEA – End Effects
    • Diamerter / Length
    • Speed / Control
  • Eddy Current Reduction
    • Laminate Magnets
    • Axial
    • Circumferential
    • Lamination thickness
    • Wire cutting with electrical insulation
  • Magnet Retention
    • Carbon Fibre
    • Inconel
    • Titanium
    • Laminated sleeve
    • Ferrous high tension steels
    • Sleeve Fitting
      • High Temperature Interference
      • Press
      • Liquid Nitrogen interference
  • High Speed Rotor Effects
    • Balancing
    • De Coupling
    • Transient effects

The topic of Permanent Magnet Electric Machines is truly vast, the best way to find out more about what we can do is to get in touch here.