Ultra-High-Speed Motor Torque and Performance Testing up to 120,000 r/min
The Sugawara EMA-100 / EMM-100M is an ultra-high-speed motor torque measurement system designed to evaluate torque, rotational speed, output, efficiency, and electrical performance at speeds up to 120,000 r/min.
The system combines the EMA-100 Motor Analyzer with the EMM-100M hysteresis-brake load tester and a precision motor holding unit. A newly developed small-diameter, low-inertia brake rotor enables stable loading from motor standstill through ultra-high-speed operation while maintaining the controllability of a hysteresis-brake dynamometer.
120,000 r/min
Maximum rotational speed for ultra-high-speed motor testing
100 mN·m
Rated torque capacity of the EMM-100M load tester
±0.5%
Torque accuracy relative to rated torque
22 Parameters
Mechanical and electrical performance parameters available with power-meter integration
The system supports torque control, speed control, TS control, brake control, time-sweep measurement, and load simulation. When connected to a compatible power meter, the EMA-100 can display mechanical and electrical parameters including torque, speed, voltage, current, power, efficiency, and power factor.
120,000 r/min Capability
Supports torque and speed performance measurement of ultra-high-speed motors at rotational speeds up to 120,000 r/min.
100 mN·m Rated Torque
The EMM-100M provides a rated torque capacity of 100 mN·m for compact high-speed motor evaluation.
Low-Inertia Hysteresis Brake
A newly developed brake rotor with inertia of 1.5 × 10⁻⁶ kg·m² supports stable loading at ultra-high rotational speeds.
Stable Load Control
Hysteresis-brake control provides stable loading from standstill through ultra-high-speed operation without complex PID tuning.
Multiple Control Modes
Supports torque control, speed control, TS control, brake control, point measurement, time-sweep measurement, and load simulation.
22 Measurement Parameters
With compatible power-meter integration, the system can monitor mechanical and electrical parameters including torque, speed, power, voltage, current, efficiency, and power factor.
Precision Motor Alignment
The PC3-MLH2 motor holding unit provides fine XYZ adjustment for accurate shaft alignment with the load tester.
PC and Touch-Panel Operation
Measurement conditions can be configured from the EMA-100 touch panel or dedicated Windows software.
Ultra-High-Speed Motor Development
Torque, speed, and output characterization of compact motors
operating at tens of thousands of revolutions per minute.
High-Speed Motor Efficiency Testing
Combined mechanical and electrical measurement for motor and
driver efficiency evaluation.
Speed-Torque Characterization
Controlled loading for detailed speed-versus-torque performance
evaluation across the motor operating range.
Motor Driver Evaluation
Measurement of motor and driver electrical performance when
integrated with compatible power-measurement equipment.
Load Simulation
Programmable load profiles can reproduce defined operating
conditions for motor development and validation.
High-Speed Motor Validation
Repeatable performance measurement for compact, high-output,
and energy-efficient motor development.
| Maximum Speed | 120,000 r/min |
|---|---|
| Rotational Speed Accuracy | ±0.01% + 1 digit |
| Rated Torque | 100 mN·m |
| Torque Accuracy | ±0.5% of rated torque |
| Braking System | Hysteresis brake |
| Brake Rotor Inertia | 1.5 × 10⁻⁶ kg·m² |
| Continuous Power Absorption | 80 W |
| Short-Term Power Absorption | 600 W for up to 10 s |
| Peak Power Absorption | 1,000 W for up to 5 s |
| Mountable Motor Diameter | φ10–60 mm |
| Motor Shaft Diameter | φ3–5 mm |
| Power Requirement | 100–240 VAC ±10 V, 50/60 Hz |
System Components
| Component | Dimensions (W × H × D) | Weight |
|---|---|---|
| EMA-100 Motor Analyzer | 315 × 218 × 400 mm | 14 kg |
| EMM-100M Load Tester | 230 × 250 × 400 mm | 16.5 kg |
Measurement Parameters
| Mechanical | Time, torque, rotational speed, output power |
|---|---|
| Electrical | Voltage, current, input power, supply power, motor efficiency, driver efficiency, and power factor |
| Real-Time Display | Up to 12 parameters simultaneously |
| Total Available Parameters | 22 parameters with compatible power-meter integration |
System Configuration
The ultra-high-speed motor torque measurement system combines the EMA-100 Motor Analyzer, EMM-100M Load Tester, PC3-MLH2 Motor Holding Unit, dedicated coupling and alignment hardware, and measurement software.
The motor holding unit provides fine XYZ positioning while maintaining motor alignment parallel to the load-tester shaft. A dedicated alignment jig and coupling simplify shaft connection while supporting safe operation at ultra-high rotational speeds.
EMA-100 Motor Analyzer
Provides system control, measurement display, test sequencing, and communication with external measurement equipment.
EMM-100M Load Tester
Ultra-high-speed hysteresis-brake dynamometer rated for 120,000 r/min and 100 mN·m.
PC3-MLH2 Motor Holding Unit
Precision XYZ-adjustable fixture for motor alignment and secure high-speed shaft connection.
Power Meter Integration
Compatible power measurement enables simultaneous mechanical and electrical motor-performance evaluation.
