A Hysteresis Dynamometer measures the torque or load of Electric Motors like AC, DC, DC brushless, BLDC, and stepper motors. It accurately measures torque and Load, essential for performance testing and optimization of electric motors.
SUGAWARA Hysteresis Dynamometer
An accurate grasp of load characteristics, cogging torque characteristics, and torque ripple characteristics is critical for electric motor performance evaluations. Measurements of load characteristics differ significantly from measurements of cogging torque/torque ripple characteristics. This is why a single type of torque sensor sometimes fails to provide precise measurements of these differing characteristics. Sugawara Laboratories provides a family of motor testing equipment designed to measure and evaluate the motor torque and Load characteristics. They offer a lineup of 13 models of HB Series Dynamometers with rated torques ranging from 5 mN·m to 50 N·m, including short plate models and models for temperature chambers.
Hysteresis Brake
A hysteresis brake is structured to rotate a rotor made of high permeability magnetic material inside an air gap containing a magnetic field formed by a cog-wheel-shaped stator. The magnetic flux flowing in the stator passes through the rotor, creating magnetic friction between the rotor and the stator, and acting as a non-contacting brake. This magnetic friction is proportional to the strength of the magnetic flux penetrating the rotor, and the strength of this magnetic flux can be adjusted by changing the strength of the exciting current applied to the coil. Therefore, a hysteresis brake makes it easy to adjust the braking force regardless of the rotation speed of the rotor.
Hysteresis Dynamometers (HB Series)
Specifications
| Model | Max. torque | Max. speed (rpm) (∗1) | 5-minute power rating (W) | Continuous power rating (Ｗ) | Standard motor jig set |
| HB-5MN | 5 mN･m | 40,000 | 7.5 | 1.5 | MMJ-7C |
| HB-10MN | 10 mN･m | 40,000 | 15 | 3 | MMJ-7C |
| HB-20MN | 20 mN･m | 40,000 | 30 | 6 | MMJ-7C |
| HB-50MN | 50 mN･m | 60,000 | 75 | 15 | MMJ-7C |
| HB-100MN | 100 mN･m | 60,000 | 120 | 25 | MMJ-7C |
| HB-200MN | 200 mN･m | 60,000 | 170 | 35 | MMJ-7C |
| HB-500MN | 500 mN･m | 50,000 | 300 | 60 | MMJ-9C |
| HB-1N | 1 N･m | 30,000 | 400 | 80 | MMJ-9C |
| HB-2N | 2 N･m | 25,000 | 600 | 120 | MMJ-10C |
| HB-5N | 5 N･m | 20,000 | 1,500 | 300 | MMJ-10C |
| HB-10N | 10 N･m | 12,000 | 3,000 | 700 | MMJ-12B |
| HB-20N | 20 N･m | 12,000 | 6,000 | 1,200 | MMJ-12B |
| HB-50N | 50 N･m | 7,000 | 12,000 (∗2) | 4,000 | (∗3) |
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Key Features
- In Sugawara’s highly reliable hysteresis brake, which is supported by 50 years of experience, they have reduced the gap between the rotor and stator and minimized the inertia moment of the rotor, resulting in better torque control performance and less vibration during rotation.
- The torque accuracy is ±0.1% of the rated torque (accuracy of the system, including DM5000 Controller, after calibration) in all 13 models.
- World-class high-speed rotation: 60,000 rpm in three models with rated torques of 50, 100, and 200 mN·m, and 50,000 rpm in the 500 mN·m model.
- An optional rotary encoder for the measurement of extremely low speeds: 10–10,000 rpm (600P/R) and 5–5,000 rpm (1200P/R).
- Uses the well-established MMJ-series motor mounting jigs, although custom-made jigs can also be made.
- For seven models, ranging from HB-50MN (rated 50 mN·m) to HB-5N (rated 5 Nm), short plate models and models for temperature chambers are available as standard.
About SUGAWARA
Founded in 1954, Sugawara makes multiple devices for the measurement of rotation and motion. Sugawara provides world-class stroboscopes and motor testing equipment for quality inspection across various industries.
We have partnered with Sugawara to provide their cutting-edge motor testing equipment for motor manufacturers in India.