Testsystems

Test Benches

Every good motor starts with a good magnetic field.

It determines torque, efficiency and smooth running, and we measure it: in the lab, on the production line, or as a measurement unit in your own handling.

  • Sensors, benches and evaluation software from one house
  • One measurement principle from prototype to 100 % end-of-line
  • Every bench built around your rotor and cycle time
Choose a test bench Read more about the advantages
Koob mobile test bench with a single sensor, a rotor in its enclosure and a swing-arm monitor.
Mobile bench · lab & small series
Koob inline test bench with automated rotor handling.
Inline
Koob measurement rack unit, a 19″ enclosure with its sensor array and cables.
Measurement rack unit

Our options

Choose the right setup for your application

One measurement principle, three levels of integration — from the mobile test bench that drives the rotor itself to the measurement rack unit that fits into your own rotor handling.

Advantages

Why measure the magnetic field

Electric motors work through the interplay of electric currents and magnetic fields. The quality and orientation of those fields set the torque, the efficiency and the smooth running of the machine. Testing them is therefore decisive in securing the motor’s performance, reliability and service life.

Our test systems enable high-resolution analysis of the magnetic fields in permanent-magnet and externally excited rotors — contactless, automated and in real time. The results are valuable across the entire product life cycle: from validating early prototypes, through in-line inspection in series production, to targeted maintenance in operation.

Choose a test bench Read the full article
Torque
Flux density in the rotor sets what the motor can deliver
Efficiency
Better material use, lower weight and size for e-mobility
Smooth run
Magnetic imbalance is where NVH complaints start

What a measurement gives you

  1. Detect Design and Manufacturing Defects

    Deviations in the magnetic field reveal incorrectly installed magnets, demagnetized components, or misaligned rotors before the part leaves the production line.

  2. Reduce Power Loss Through Optimal Pairing

    Calibrated parts are specifically paired: a strong rotor is matched with a weaker counterpart. The result is more consistent performance and higher yield.

  3. Validate Simulations Using the Actual Part

    Measurements show whether the simulated magnetic field matches reality. This forms the basis for reliable drives at OEMs and Tier 1 suppliers.

  4. Verifying EMC in Sensitive Areas

    Magnetic stray fields can interfere with sensors and control units in medical technology and the automotive industry. Measurements detect them early on.

  5. Early Detection of Damage During Operation

    Demagnetization and mechanical damage leave traces in the magnetic field. This enables targeted maintenance rather than blanket maintenance, resulting in less downtime.

Configurations and modules

Adapt the test bench to your needs

Configure your test bench

  • PSM

    Permanent-magnet radial rotors.

    Single sensorSensor array

  • EESM

    Externally excited radial rotors, energized through a slip ring and carbon brushes.

    Single sensorSensor array

  • AFM

    Axial-flux rotors, measured across the face of the disc.

    Single sensorSensor array

  • Linear magnets

    Linear motor tracks and secondary parts, scanned along their length.

    Sensor array

  • Integrated 3D scanner

    Geometric analysis of your components — length inspection, component presence, concentricity.

    Module

Evaluation per segment

What each evaluation criterion means

Selected criterion

Polarity

Polarity follows from the magnetic flux of each pole. Only when the poles alternate correctly and are evenly magnetised does a symmetrical magnetic field result — the precondition for even torque and for a motor that runs smoothly and with little vibration.

Evaluation criteria

Criterion

Click a criterion — the plot then illustrates it across all segments

Field plot (demonstrated on one channel)

B [mT] over angle [°]

Polarity

S1S2S3
+8334 mT·°−8984 mT·°+8285 mT·°
8004000-400-800
0°9°18°27°36°45°54°

Software and Analysis

Magnetix Universal

Our test software – flexible, practical and in continuous development. It forms the heart of our test benches and grows with the increasing demands on testing and analysis processes.

Rely on analysis software refined over years of real-world application. Our measurement suite gives you a comprehensive view of your rotor’s magnetic behavior — from intuitive 3D field visualization to deep diagnostic tools developed in close collaboration with our customers.

  • 3D Magnetic Field Analysis
  • Single Pole Analysis
  • Skew Angle Detection
  • FFT Field Analysis
More on Magnetix Universal

Contract measurement

Test it on your own rotor first

Send us one of your rotors, or we come to your plant in Germany with a mobile test bench. You receive the 3D model of the field, the pole analysis and the measurement data – before you decide on a test bench of your own.

Request a trial measurement About contract measurement