Torque Dynamometer
Torque and Speed Measurement

Controller DM5001
HB-N Series Dynamometers
Automotive motors
Home appliance motors
Industrial automation motors
DC motors
BLDC motors
AC motors
SR motors
Stepping motors

Sugawara’s Dynamometers
use hysteresis brakes.
A hysteresis brake is a high-performancebrake used in dynamometers to achieve highmeasurement accuracy. It generates a stableload torque according to the strength of theexcitation current regardless of rotation speed.

■Hysteresis brake features●High-accuracy control●Maximum speed 60,000 r/min

Stable load control from low-speed to high-speed rotation*Maximum speed depends on torque rating and model.

●Structure that minimizes the inertia moment of the rotor●Long life owing to a non-contact brake●Excellent thermal properties—torque not easily affectedby temperature rise in the brake or surroundings●Compact configuration compared with motor brakes

Dynamometer System
Torque accuracy

DM5001 / HB-N Series± 0.1%●Speed accuracy ± 0.01%●Maximum speed 60,000 r/min

Dynamometer using a reliable hysteresis brakewith superb reproducibility unaffected by inertia
Improved measurement accuracy and ease of use
Expanded lineup of convenient functions
and strong production-line/development-bench support●Simple start-up without the need for PID settings●Simple, software-based torque calibration●Simultaneous measurement of temperature, flow rate, etc. by adding an I/O option●Four measurement units can be connected with a single controller●Endurance tests along time axis enabled by evolved measurement modes■Hysteresis brake principles
StatorHysteresis brake
CoilFrame

EncoderBearing

Load cellRotor

Hysteresis brake structure

A hysteresis brake is structured to rotate a rotor made of highpermeability magnetic material inside an air gap containing amagnetic 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, andacting as a non-contacting brake. This magnetic friction is
proportional to the strength of the magnetic flux penetrating therotor, and the strength of this magnetic flux can be adjusted bychanging the strength of the exciting current applied to the coil.
Therefore, a hysteresis brake makes it easy to adjust thebraking force regardless of the rotation speed of the rotor.

Torque detector structure

The brakes of HB-N series Dynamometers are supported
by bearings on the equipment frame. When the rotor isrotated by the motor under measurement and braked bymagnetic friction with the stator, a reaction force isgenerated on the stator and the stator tries to rotate. This
reaction force is detected by a load cell as the brake
torque. Since the rotational moment acting on the stator isdetected in an extremely static fashion, it is lesssusceptible to vibration than methods that involve detecting
torque on a rotating shaft, and results in a stable detection
method that is suitable for high-speed rotation.

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Torque and Speed Measurement

DM5001 Controller
The DM5001 controller for the HB-N series
Dynamometers demonstrates outstanding
performance in combination with TORQuick
specialized software.

■ Main features●Four HB-N Series Dynamometers can be connectedwith a single controller.

●Analog torque and speed outputs provided asstandard●Diverse expanded functions by adding an I/O option
Connections can be made with external equipments enablinga variety of expanded functions.
►Simultaneous measurement of voltage signal
inputs from external sensors

Using an analog 4 ch input (0–10 V), it is possible to simultaneously
measure and store voltage inputs from external sensors such astemperature and flow rate sensors. The scaling and unit of theseinputs are user-configurable. These input data can be plotted
simultaneously on a graph of torque measurements, and can also
be configured as pass/fail judgment criteria.

►Controls an external motor power supply

This function allows you to switch a motor’s power supply on andoff (via contact inputs). Also, if you use a power supply that has ananalog input function, the analog voltage output function allows
you to change the power supply voltage during the measurement
sequence.

■ Specifications
Analog output
Torque analog output

Max ±10 VDC ±1%
Voltage and torque are individuallyconfigurable

Speed analog output

Max ±10 VDC ±1%
Voltage and speed are individuallyconfigurable

I/O option (Optional)

Digital input 4 ch, Digital output 4 ch
Analog input 4 ch, Analog output 2 ch
Contact output for power supplycontrol (NO, NC) 1 chInterface

USB 2.0 or greater (Type A)

Temperatures

0–40°C

Humidity

20–90%RH,without dew condensation

Power requirement

100–240 VAC±10%, 50/60 Hz

Power consumption

30 VA or lessDimensions (W×H×D)

430×148×360 mm

Weight

8 kg

I/O Option

Please specify I/O options
when ordering DM5001.

DM5001 Controller■ System configuration
POWER

Controls the torque measurement unit by specialized software via
the controller●DM5001 is compatible with the following power meters for voltage andPOWER

current measurements.

COGGING TORQUE & TORQUE RIPPLE TEST SYSTEM

ATV-100

DM5001 Controller

Yokogawa Test & Measurement Corporation
HB-N Series Dynamometers

WT5000 Precision Power Analyzer (*1),
WT1800E/WT1800 High-Performance Power Analyzer
WT300E/WT300 Digital Power Analyzer

HIOKI E.E. CORPORATIONPower Analyzer PW3390
Power Meter PW3335/PW3336/PW3337(*2)

TORQuick CT

Software4

WT1800E High-Performance
Power Analyzer, etc.
(Optional)*1 Select WT1800E from the command type settings of WT5000.
A maximum of 6 elements can be used. Supports only the 760901 and 760902 elements.
*2 In current measurement, supports only measurements using the current input terminals.

Software
TORQuick CT
TORQuick software for motor evaluation is developed with the user in mind.
It can measure a variety of motor speed/torque characteristics in combination with a Dynamometerand can manage and store data on Windows. Its user-friendly, highly sophisticated interface enables
high-accuracy measurements through simple operations.

■ Main features●User-friendly graphical user interface

The graph displays 5 axes × 3 items in real time. We have improved the operability of this display by adding a graph axis auto setting function.
You can also customize the graph line style and dot appearance. It is also easy to change the power analyzer settings in the software.

Measurement graph

Power meter settings●Automatically recognizes the models of the connected Dynamometers●More than 60 measurement items

Torque / Speed / Time / Output power / Direction of rotation / Voltage / Current / Electric power /Efficiency / Power factor / Voltage frequency / Current frequency etc.

●Diverse measurements according to use►High accuracy point measurementswith simple settings►Sweep measurements enabling
continuous measurements►Load simulations envisioning
actual usage

S-T characteristics (speed–torquecharacteristics) can be measured by simply
setting measurement points. Torque control,
speed control, and brake control can be
combined within one measurement. The data
is not affected by moment of inertia because
it measures values at stable operating points.

In addition to point measurements, sweep
measurements that continuously vary control
values can be performed. Measurement time
can be set as desired, which is suitable formaking measurements over a short period tosuppress heating effects.

A variety of tests such as endurance tests
and cycle tests can be performed. This
enables load simulation tests that envision
actual usage conditions, and sincemeasurements can be set up to 10,000
cycles, enables endurance tests that combine
testing and idling states.

►Inspection mode specialized forpass/fail testing►Manual mode where measured
values are displayed in real time

■ Operating conditions

Pass/fail testing can be performed by setting
the upper and lower limits for up to fivemeasurement items based on torque, speed
or braking. By specifying a file name inadvance, you can automatically generate afile listing the time, sequence number andresults of each measurement.

In this mode, you can set and control thetorque, speed or braking at a single point,and display all the corresponding measured
values in real time. This mode can be used
for simple behavior observations and for themeasurement of starting torque.

OSWindows10 (64bit)
Professional
Japanese or English version

CPUIntel Core i5 or later processor

Memory8 GB or more recommended

HDD

256 GB or more recommended

MonitorHD FWXGA 1366×768 or greaterDVD drive

One or more units(required for software installation)

Com. Ports USB port × 1
When connected to a power meter,
the following are required separately:
Yokogawa WT Series: USB × 1
HIOKI PW Series: LAN (Ethernet
100BASE TX) × 1

5

Torque and Speed Measurement

HB-N Series Dynamometers■ Main features●Measurement accuracy at industry's highest level
Torque accuracy: ±0.1% of the rated torque *1
Speed accuracy: ±0.01%●Adopts a high-reliability hysteresis brake

The hysteresis brake used here has a long track record of highreliability due to an original structure developed by Sugawara.
This structure improves torque control performance and reduces
vibration during rotation by narrowing the gap between the rotor
and stator and minimizing the inertia moment of the rotor.

●Stable measurement from low-speed to high-speed
Stable measurements can be performed from low-speed tohigh-speed regions because it detects torque from the force ofmovement of the brake’s stator. The maximum speed is 60,000
r/min (speed differs according to torque rating). An optional rotary
encoder for the measurement of extremely low speeds supports
10–10,000 r/min (600 P/R) and 5–5,000 r/min (1200 P/R).

●Extensive product lineup with torque ratingsfrom 5 mN·m to 50 N·m

13 models of Dynamometers to choose from according to motor
output power for making high-accuracy measurements●Features air bearings for low-torque models●Short base plate models and temperature chambermodels are provided as standard.

■ Dynamometer Specifications
Models

HB-5MN

HB-10MN

HB-20MN

HB-50MN

HB-100MN

HB-200MN

HB-500MN

HB-1N

Torque rating

5 mN·m

10 mN·m

20 mN·m

50 mN·m

100 mN·m

200 mN·m

500 mN·m

1 N·m

Torque detection

Brake-stator reaction force detected by strain-gauge load cell

Torque accuracy±0.1% of full scale (accuracy of the system including DM5001 Controller, after calibration) *1

Max. speed

40,000 r/min

60,000 r/min

Speed detection

50,000 r/min

Speed accuracy±0.01%

Power rating (5 min)

7.5 W

15 W

30 W

75 W

120 W

170 W

300 W

400 W

Power rating (continuous)

1.5 W

3W

6W

15 W

25 W

35 W

60 W

80 W

Brake

Hysteresis brake

Brake support
Brake rotor momentof inertia

Air bearings
kg·m 2Brake cooling

0.6×10−6

0.8×10−6

WeightBall bearings
1.0×10−6

2.6×10−6

2.8×10−5

210×246×400 mm

1.9×10−4

210×276×500 mm
20 kg

18 kg

29 kg

26 kg

AC100–240 V
30 VA or lessPower consumption
Shaft shape

9.2×10−6

Air cooling by fan

Power requirement
Shaft diameter3.9×10−6–Dimensions (W×H×D)

Φ3

Φ4

Φ6

Φ10D-cutRound

160 mmShaft height

130 mmStandard motor jig

MMJ-7C

MMJ-9CΦ25–100 mm

Φ50–150 mm

Diameter of attachable motor*1: After calibration with the DM5001 Controller. Torque accuracy is ±0.25% for 1200 P/R optional models of HB-500MN, HB-1N, HB-2N, and HB-5N.
*2: All the models have two kinds of low-speed encoder options, 600 P/R type (10–10,000 r/min) and 1200 P/R type (5–5,000 r/min).

630,000 r/min

Rotary encoder of 60 P/R (standard models) *2*3: Power rating (3 min) for HB-50N

■ Calibration■ Power absorption curve

Calibration is necessary for measuring correct torque values.
A separately sold calibration jig set (calibration bar and weight) is usedfor this purpose. The calibration bar is attached to the shaft and theweight is suspended from the end of the bar. Calibration is achieved bysimply pushing the CAL button. No volume adjustments are necessary.

The allowable time for continuous loading of the Dynamometer
varies with the power it absorbs. The Dynamometers must be
used correctly according to the following graphs of power
absorption curve. Contact us for the graphs of other models.
Continuous use beyond the limit indicated in the graphs will
make it difficult to obtain correct data and may cause damage.
For models greater than the HB-2N, the brake current is
automatically cut off to set the brake torque zero when theabsorption power exceeds the limit.

HB-200MN

200180160■ MMJ-series Motor Mounting Jigs
MMJ-series Motor Mounting Jigs have an adjustment function for
centering the motor and measurement shafts. Four models areavailable for twelve measurement units ranging from HB-5MN toHB-20N.
Since the surface of the V block of MMJ
on which the motor under test is placed isdesigned to be parallel with the shaft ofthe Dynamometer, the shafts of the motorand Dynamometer will be parallel whenthey are simply mounted on the V block if
the motor body and the shaft are parallel.
As a result, alignment is easy to achieve.

POWER [W]140120100806040200010203040506070809010080901008090100

MAXIMUM TIME [min]HB-2N700■Safety coverIn certain cases, an incorrectly aligned coupling may be damaged
during measurements causing it to fly off or scatter, which could
cause an injury. Always take appropriate safety measures such asattaching a safety cover. A safety cover is available from Sugawara(option).

POWER [W]600
500400300
200

HB-2N

HB-5N

HB-10N

HB-20N

HB-50N

2 N·m

5 N·m

10 N·m20 N·m

50 N·m

100
001020304050

60

70

MAXIMUM TIME [min]25,000 r/min

20,000 r/min

7,000 r/min

12,000 r/min

600 P/R
1.5 kW

3.0 kW

6.0 kW

12 kW *3120 W

0.3 kW

0.7 kW

1.2 kW

4 kW

0.5×10 −3

1.8×10−3

6.3×10−3

2.1×10−2

6.1×10−2

Cooling by fan and blower
300×325×600 mm
56 kg

63 kg

500×500×1000 mm

500×537×1245 mm

550×1300×1300 mm

180kg

210kg

500kg

AC100 V
Φ15Φ18543210010203040506070

MAXIMUM TIME [min]3 Phase AC200/220 V
1kVA or less

200VA or less
Φ126POWER [kW]600 W

HB-20N7Φ20Φ30Key seat
200 mm

230 mm

250 mm

MMJ-10C

MMJ-12B

Φ60–180 mm

Φ40–200 mm

Customization
available

Power (motor output power) is calculated as follows.

Power [W] =Torque [N·m] × Speed [r/min] × 0.1047

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Torque and Speed Measurement

Short-base-plate HB-NS Dynamometers
Ideal for measuring motors with special shapes.
HB-NS is a short-base-plate type of Dynamometer in the HB-N series.
A system that combines HB-NS and customized base plates and jigs
can be built for specially shaped motors that cannot be mounted withstandard MMJ Motor mounting jigs.
Seven models to choose from with torque ratings from 50 mN·m to 5 N·m.

■Application examples●Development of specially shaped motors for pumps, power tools,
in-vehicle use, etc.

●Performance testing of a power tool

Supports measuring of motors with a long shaft
by combining with an extended base plate

Customized Jigs and Base Plates
Sugawara can propose a variety of jigs andcouplings tailored to motor model and shape tosupport the customer’s measurement needs.
Raised base plates and extended base plates are available formounting the short-base-plate type HB-NS dynamometers.

Axial fans

Cylindrical attachment

Output shaft

MMJ-C Series Motor
Mounting Jigs

Supports measuring of large-diameter motors
by combining with a raised base plate
8

Fixed type motor mounting jig

Jig set for axial fans

HB-NT Dynamometers for Temperature /Humidity Environmental Testing
POWER

POWER

POWER

CONTROLLER

DM-5001

Measures motor load characteristics ina temperature/humidity-controlled state
within a temperature chamber.
HB-NT is a Dynamometer used in combination with atemperature/humidity environmental testing instrument(temperature chamber).
It can be used to perform simulation tests, endurance
tests, etc. under diverse environmental conditions.

■ Main features●Enables high-accuracy measurements by directly
attaching the temperature-chamber motor
mounting jig to the Dynamometer to correctlyalign the measured motor.

●Enables simultaneous plotting of chamber■Application examples●Development/evaluation of motors for continuously variablevalve-lifting (CVVL) systems in automobile engines●Understanding change in torque characteristics under
low/high-temperature environments for various
vehicle-mounted motors and actuators

temperature, motor winding temperature, etc. on
the torque measurement graph using an optional
I/O module.

●Can be used as an ordinary Dynamometer byattaching a standard MMJ Motor Mounting Jig.

●Seven models to choose from with torque ratingsfrom 50 mN·m to 5 N·m.

●All seven models have the same size enablingcommon use with one temperature chamber.

Effective for evaluating power-window motors, etc.

Low-speed Measurement Option
Minimum Rotation Speed 5 r/min
Two options are provided for low-speed
measurements.
HB-*e6: 10–10,000 r/min
HB-*e12: 5–5,000 r/min
In addition to evaluating geared motors and near-stall
performance of motors, it can be used for measuringpull-out torque of stepper motors. This option can beselected for all HB-N series models including HB-NSand HB-NT (only e12 for the HB-50N model).

■Application examples●Motor development/evaluation● In-wheel motor for automated guided vehicle (AGV)● Hollow-shaft motors for industrial robots● Motors for automobile seat adjusters● Motors for automobile door-mirror drivers● Motors for audio use●Measurement of pull-out torque in actuators (stepper motors)
for surveillance cameras

Enables measurement of low-speed motors such as
hollow-shaft motors for industrial robots
9