Harmonic Drive FHA-Cmini Series User manual

AC Servo Actuator
FHA-Cmini series manual
ISO14001
ISO9001

Introduction
Introduction
Thank you very much for your purchasing our FHA-Cmini series servo actuator.
Wrong handling or use of this product may result in unexpected accidents or shorter life of the product.
Read this document carefully and use the product correctly so that the product can be used safely for
many years.
Product specifications are subject to change without notice for improvement purposes.
Keep this manual in a convenient location and refer to it whenever necessary in operating or
maintaining the units.
The end user of the actuator should have a copy of this manual.

SAFETY GUIDE
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1
SAFETY GUIDE
To use this actuator safely and correctly, be sure to read SAFETY GUIDE and other parts of this
document carefully and fully understand the information provided herein before using the driver.
NOTATION
Important safety information you must note is provided herein. Be sure to observe these instructions.
Indicates a potentially hazardous situation, which, if not avoided, could result
in death or serious personal injury.
Indicates a potentially hazardous situation, which, if not avoided, may result in
minor or moderate personal injury and/or damage to the equipment.
Indicates what should be performed or avoided to prevent non-operation or
malfunction of the product or negative effects on its performance or function.
LIMITATION OF APPLICATIONS
The equipment listed in this document may not be used for the applications listed below:
･Space equipment
･Aircraft, aeronautic equipment
･Nuclear equipment
･Household apparatus
･Vacuum equipment
･Automobile, automotive parts
･Amusement equipment, sport equipment, game machines
･Machine or devices acting directly on the human body
･Instruments or devices to transport or carry people
･Apparatus or devices used in special environments
If the above list includes your intending application for our products, please consult us.
Safety measures are essential to prevent accidents resulting
in death, injury or damage of the equipment due to
malfunction or faulty operation.
WARNING
CAUTION
CAUTION

SAFETY GUIDE
2
SAFETY NOTE
CAUTIONS FOR ACTUATORS AT APPLICATION DESIGNING
Always use under followings conditions:
The actuator is designed to be used indoors. Observe the following
conditions:
・Ambient temperature: 0℃to 40℃
・Ambient humidity: 20% to 80%RH (Non-condensation)
・Vibration: Max 24.5 m/S2
・Impact: Max 294 m/S2
・No contamination by water, oil
・No corrosive or explosive gas
Follow exactly the instructions in the relating manuals to
install the actuator in the equipment.
・Ensure exact alignment of motor shaft center and corresponding
center in the application.
・Failure to observe this caution may lead to vibration, resulting in
damage of output elements.
CAUTION FOR ACTUATORS IN OPERATIONS
Never connect cables directly to a power supply socket.
・Each actuator must be operated with a proper driver.
・Failure to observe this caution may lead to injury, fire or damage of
the actuator.
Do not apply impacts and shocks.
・Do not use a hammer during installation.
・Failure to observe this caution could damage the encoder and may
cause uncontrollable operation.
Avoid handling of actuators by cables.
・Failure to observe this caution may damage the wiring, causing
uncontrollable or faulty operation.
Keep limited torques of the actuator.
・Keep limited torques of the actuator.
・Be aware, that if arms attached to output element hits by accident an
solid, the output element may be uncontrollable.
CAUTION
WARNING
CAUTION

SAFETY GUIDE
1-2
3
CAUTIONS FOR DRIVERS AT APPLICATION DESIGNING
Always use drivers under followings conditions:
・Mount in a vertical position keeping sufficient distance to other
devices to let heat generated by the driver radiate freely.
・0℃to 50℃, 95% RH or below (Non condensation)
・No vibration or physical shock
・No corrosive, inflammable or explosive gas
Use sufficient noise suppressing means and safe grounding.
・Keep signal and power leads separated.
・Keep leads as short as possible.
・Ground actuator and driver at one single point, minimum ground
resistance class: D (less than 100 ohms)
・Do not use a power line filter in the motor circuit.
Pay attention to negative torque by inverse load.
・Inverse load may cause damages of drivers.
・Please consult our sales office, if you intent to apply products for
inverse load.
Use a fast-response type ground-fault detector designed for
PWM inverters.
・Do not use a time-delay-type ground-fault detector.
Safety measures are essential to prevent accidents resulting
in death, injury or damage of the equipment due to
malfunction or faulty operation.
CAUTION FOR DRIVERS IN OPERATIONS
Never change wiring while power is active.
Make sure of power non-active before servicing the products. Failure to
observe this caution may result in electric shock or personal injury.
Do not touch terminals or inspect products at least 15
minutes after turning OFF power.
・Otherwise residual electric charges may result in electric shock. In
order to prevent electric shock, perform inspections 15 minutes
after the power supply is turned OFF and confirming the
CHARGE lamp is turned OFF.
・Make installation of products not easy to touch their inner electric
components.
CAUTION
WARNING

SAFETY GUIDE
4
Do not make a voltage resistance test.
・Failure to observe this caution may result in damage of the control
unit.
・Please consult our sales office, if you intent to make a voltage
resistance test.
Do not operate control units by means of power ON/OFF
switching.
・Start/stop operation should be performed via input signals.
・Failure to observe this caution may result in deterioration of
electronic parts.
DISPOSAL OF AN ACTUATOR, A MOTOR, A CONTROL UNIT AND/OR THEIR
PARTS
All products or parts have to be disposed of as industrial
waste.
Since the case or the box of drivers have a material indication, classify
parts and dispose them separately.
CAUTION
CAUTION

Structure of this document
5
Structure of this document
Chapter 1 Outlines Ou
tlines of product models, specifications, external drawings, etc.,
are explained.
Chapter 2 Selection guidelines Selection guidelines for the FHA-C mini series actuator are explained
in this chapter.
Chapter 3 Installation This chapter explains the procedure for installing the FHA-C mini
series actuator.
Appendix How to calculate unit conversions and inertia moments are explained
in this chapter.

6
Contents
SAFETY GUIDE ..................................................................................................... 1
NOTATION .............................................................................................................1
LIMITATION OF APPLICATIONS............................................................................1
SAFETY NOTE ......................................................................................................2
Structure of this document...................................................................................... 5
Contents ................................................................................................................. 6
Chapter 1 Outlines
1-1 Outlines......................................................................................................1-1
Main features.......................................................................................................1-1
1-2 Model.........................................................................................................1-2
1-3 Combinations with drivers..........................................................................1-3
1-4 Specifications............................................................................................. 1-4
Input voltage 100VAC/200VAC specification .......................................................1-4
Input voltage: 24VDC specification ......................................................................1-5
1-5 External drawing ........................................................................................1-6
Side-leading cables (standard specification/incremental encoder model) ............1-6
Side-leading rear cables (option specification/incremental encoder model) .........1-7
Side-leading cables (standard specification/absolute encoder model) .................1-8
1-6 Mechanical accuracy .................................................................................1-9
1-7 Uni-directional positional accuracy...........................................................1-10
Angle correction function during horizontal indexing..........................................1-10
1-8 Detector resolution................................................................................... 1-11
1-9 Rigidity ..................................................................................................... 1-12
Moment stiffness ...............................................................................................1-12
Rotation direction torsional stiffness ..................................................................1-13
1-10 Rotation direction..................................................................................... 1-14
1-11 Shock resistance...................................................................................... 1-15
1-12 Resistance to vibration.............................................................................1-16
1-13 Operable range........................................................................................1-17
1-14 Cable specifications.................................................................................1-24

Contents
7
Chapter 2 Selection guidelines
2-1 Connecting power cables...........................................................................2-1
2-2 Change in moment of inertia of load ..........................................................2-2
2-3 Verifying and examining load weights........................................................2-3
2-4 Examining operating status........................................................................2-7
Examining actuator rotation speed ......................................................................2-7
Calculating and examining load inertia moment...................................................2-7
Load torque calculation .......................................................................................2-8
Acceleration time and deceleration time ..............................................................2-9
Duty cycles........................................................................................................2-10
Duty factor graphs .............................................................................................2-11
Examining effective torque and average rotation speed.....................................2-13
Overload detection time.....................................................................................2-14
Chapter 3 Installation
3-1 Receiving inspection.................................................................................. 3-1
3-2 Notices on handling ...................................................................................3-3
3-3 Installation location and installation............................................................ 3-4
Environment of installation location .....................................................................3-4
Installation ...........................................................................................................3-4
Appendix
Apx-1 Unit conversion......................................................................................Apx-1
Apx-2 Calculating inertia moment....................................................................Apx-3
Formula of mass and inertia moment ..............................................................Apx-3
Inertia moment of a cylinder ............................................................................Apx-5

8

1
Outlines
Outlines of product models, specifications, external drawings, etc., are explained in this
chapter.
1-1 Outlines··········································································· 1-1
1-2 Model ············································································· 1-2
1-3 Combinations with drivers···················································· 1-3
1-4 Specifications ··································································· 1-4
1-5 External drawing ······························································· 1-6
1-6 Mechanical accuracy·························································· 1-9
1-7 Uni-directional positional accuracy ······································ 1-10
1-8 Detector resolution····························································1-11
1-9 Rigidity·········································································· 1-12
1-10 Rotation direction ···························································· 1-14
1-11 Shock resistance ····························································· 1-15
1-12 Resistance to vibration······················································ 1-16
1-13 Operable range ······························································· 1-17
1-14 Cable specifications ························································· 1-24
Chapter

1-1 Outlines
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Outlines
1-1 Outlines
FHA-C mini series AC Servo Actuators provide high torque and highly accurate rotary operation.
These integrated AC Servo Actuators are each composed of a thin type speed reducer
HarmonicDrive®for precision control from models No. 8 to No. 14 and a flat AC servo motor.
The first feature of the FHA-C mini series actuators is their shape. The body is thinner and more
compact than those of any models that have been produced by the industry so far. The second feature
is its hollow structure. A through-hole is provided at the center of the actuator, through which wirings,
air pipes, and even laser beams can be passed to supply power and give/receive signals to moving
parts of machines and devices. (*1)
The HA-800 and the HA-680 drivers are a family of servo drive units for position/speed control,
developed exclusively for driving FHA-C mini series actuators. The small, multi-functional drivers
control the FHA-C mini series actuators' operations with great accuracy and precision.
FHA-C mini series actuators play an important role in driving various factory automation (FA)
equipment, such as robot joints, alignment mechanisms for semi-conductor LCD devices, etc.
Main features
Slim line body
The FHA-C mini series actuator is the union of a thin type speed reducer HarmonicDrive®for
precision control and a flat AC servo motor. The length from the mounting flange face to the
actuator end is 1/3 or less of our previous AC Servo Actuator models. The compact size allows
much smaller machines and devices to be designed.
Hollow structure (*1)
A through-hole is provided at the center of the actuator, through which wirings, air pipes, and
even laser beams can be passed to supply power and give/receive signals to moving parts of
machines and devices. This feature simplifies the structure of machines and devices.
High torque
The thin type speed reducer HarmonicDrive®for precision control allows the FHA-C mini series
actuator to have a much higher output torque per external drawing than direct drive motors.
High positional accuracy
The FHA-C mini series actuators provide superior positioning accuracy of up to 90 seconds
(FHA-14C-100) with uni-directional positional accuracy as well as a detector resolution of
800,000/rev (incremental encoder) and 13,107,200/rev (absolute encoder).
High torsional stiffness
Uses the high stiffness, HarmonicDrive®CSF series.
Absolute encoder
The FHA-C mini series actuator uses previous model incremental encoders and has an
absolute encoder added. We offer a wide variation to meet for a wide range of needs.
(*1): The absolute encoder model does not come with a hollow structure.

1-2 Model
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Outlines
1-2 Model
Model names for the FHA-C mini series actuators and how to read the symbols are explained below.
FHA-8 C-30-E200-C □□
Model: AC Servo Actuator
FHA-C mini series
Model No.: 8, 11, 14
Version symbol
Reduction ratio of the HarmonicDrive®
30: 1/30
50: 1/50
100: 1/100
With connector (standard specification)
Encoder type and resolution
E200 Incremental encoder 2,000 p/rev
Input power supply
None: 100VAC, 200V specification
E: 24VDC specification
Cable lead-out direction
None : Lateral (standard specification)
K : Rear (option specification)
FHA-8 C-30-12S17b A-C
Incremental encoder
Absolute encoder
Model: AC Servo Actuator
FHA-C mini series
Model No.: 8, 11, 14
Version symbol
Reduction ratio of the HarmonicDrive®
30: 1/30
50: 1/50
100: 1/100
With connector (standard specification)
Encoder type and resolution
12S17b Absolute encoder
131,072p/rev
(17bit)
Input power supply
A: 100VAC specification
G: 200VAC specification
E: 24VDC specification (Please contact us.)

1-3 Combinations with drivers
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Outlines
1-3 Combinations with drivers
The HA-800, HA-680 or RF2H21A0AHD driver is available for use with FHA-C mini series actuators. The driver
comes in models based on input voltages. The correct combinations are listed below.
Actuator
series
Model
No.
Input
voltage
(V)
Encoder
type
Combined driver
General I/O
command type
MECHATROLINK-II
type
CC-Link type
FHA-C mini
series
8 AC200
4-wire
wire-saving
incremental
HA-800A-1C-200 HA-800B-1C-200 HA-800C-1C-20011 AC200
14 AC200
8 AC100
HA-800A-1C-100 HA-800B-1C-100 HA-800C-1C-100
11 AC100
14 AC100
FHA-C mini
series
8 AC200
17-bit
absolute
HA-800A-1D-200 HA-800B-1D-200 HA-800C-1D-200
11 AC200
14 AC200
8 AC100
HA-800A-1D-100 HA-800B-1D-100 HA-800C-1D-10011 AC100
14 AC100
FHA-C mini
series
8 DC24
4-wire
wire-saving
incremental
HA-680-4-24 HA-680ML-4-24 HA-680CL-4-24
11 DC24
14 DC24 HA-680-6-24 HA-680ML-6-24 HA-680CL-6-24
8 DC24 HA-680-4-24 HA-680ML-4-24 HA-680CL-4-24
11 DC24
14 DC24 HA-680-6-24 HA-680ML-6-24 HA-680CL-6-24
FHA-C mini
series
8 DC24
17-bit
absolute
RF2H21A0AHD －－ 11 DC24
14 DC24

1-4 Specifications
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1-4 Specifications
Input voltage 100VAC/200VAC specification
The specifications for the FHA-C mini series actuators with 100VAC/200VAC input voltages are as follows.
Model
Item
FHA-8C
FHA-11C
FHA-14C
30
50
100
30
50
100
30
50
100
Maximum torque Note 3
N·m
1.8
3.3
4.8
4.5
8.3
11
9.0
18
28
kgf·m
0.18
0.34
0.49
0.46
0.85
1.1
0.92
1.8
2.9
Max. rotational speed
r/min
200
120
60
200
120
60
200
120
60
Torque constant N·m/A 3.9 6.7 14 3.8 6.6 13 4.2 7.2 15
kgf·m/A 0.40 0.68 1.4 0.39 0.67 1.4 0.43 0.74 1.5
Max. current Note 3 A 0.61 0.64 0.48 1.5 1.6 1.1 2.9 3.2 2.4
Allowable continuous
current
Note 3 A 0.31 0.34 0.26 0.74 0.69 0.54 1.27 1.06 0.85
Input power supply
(driver)
V AC200, AC100
EMF constant
(interphase)
V/(r/min) 0.48 0.80 1.6 0.48 0.80 1.6 0.52 0.86 1.70
Phase resistance Ω(20°C) 14 3.7 1.4
Phase inductance mH 5.7 3.2 1.8
Inertia moment
INC
(GD2/4) kg·m2
0.0026 0.0074 0.029 0.0060 0.017 0.067 0.018 0.050 0.20
(J) kgf·cm·s2
0.0270 0.0750 0.30 0.0610 0.170 0.680 0.180 0.510 2.00
ABS
(GD2/4) kg·m2
0.0026 0.0073 0.029 0.0062 0.017 0.069 0.019 0.054 0.215
(J) kgf·cm·s2
0.0270 0.0747 0.298 0.0630 0.176 0.705 0.197 0.547 2.189
Reduction ratio
30
50
100
30
50
100
30
50
100
Permissible moment load
N·m
15
40
75
kgf·m
1.5
4.1
7.7
Moment stiffness
N·m/rad
2 x 104
4 x 104
8 x 104
kgf·m/rad
0.2 x 104
0.4 x 104
0.8 x 104
Motor position
detector
INC Incremental encoder: 2,000 pulse/rev
ABS
Absolute encoder: Multi-rev 16 bit (65,536 rev),
1 rev 17 bit (131,072 pulse/rev)
Detector resolution
Note 5
INC (quadruplicate)
Pulse/rev
240,000
400,000
800,000
240,000
400,000
800,000
240,000
400,000
800,000
ABS (output shaft
conversion) Pulse/rev
3,932,160 6,553,600 13,107,200 3,932,160 6,553,600 13,107,200 3,932,160 6,553,600 13,107,200
Uni-directional positional
accuracy
Sec. (angle)
150
120
120
120
90
90
120
90
90
Angle
compensated
The uni-directional positional accuracies are improved 30% more than the above values at no
disturbance by the angle compensation feature of the HA-800 driver. Note 6
Mass
INC
kg
0.40
0.62
1.2
ABS
kg
0.50
0.75
1.3
Protection structure
Totally enclosed self-cooled type
Environmental conditions
Operating temperature: 0 to 40°C /Storage temperature: -20 to 60°C
Operating humidity/storage humidity: 20 to 80% RH (no condensation)
Resistance to vibration: 24.5 m/s2(frequency 10 to 400 Hz)
Shock resistance: 294 m/s2
No dust, metal powder, corrosive gas, inflammable gas, or oil mist.
To be used indoors, no direct sunlight.
Altitude: less than 1,000 m above sea level
Magnetic noise resistance: 0.01 tesla (ABS)
Motor insulation
Insulation resistance: 100 MΩ or more (by 500VDC insulation tester)
Dielectric strength: 1,500VAC/1 min
Insulation class: B
Safety standard compliance
CE marking (the absolute encoder will soon be compliant)
Mounting direction
Can be installed in any direction.
Note 1: (INC) stands for the incremental encoder and (ABS) stands for the absolute encoder.

1-4 Specifications
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Outlines
Note 2: The table shows the output shaft values of the actuators.
Note 3: The value when combined with a HA-800 driver.
Note 4: All values are typical.
Note 5: The values listed below are for the detector resolution.
Incremental encoder: (motor shaft encoder quadruplicate resolution) x (reduction ratio).
Absolute encoder: (motor shaft encoder resolution) x (reduction ratio)
Note 6: Refer to the HA-800 driver manual for further details.
Note 7: For testing conditions, refer to [1-11 Shock resistance] (p.1-15) and [1-12 Resistance to vibration] (p.1-16).
Input voltage: 24VDC specification
The specifications for FHA-C mini series actuators with a 24VDC input voltage are as follows.
Model
Item
FHA-8C
FHA-11C
FHA-14C
30
50
100
30
50
100
30
50
100
Maximum torque Note 2
N·m
1.8
3.3
4.8
4.5
8.3
11
9.0
18
28
kgf·m
0.18
0.34
0.49
0.46
0.85
1.1
0.92
1.8
2.9
Max. rotational speed
r/min
200
120
60
200
120
60
200
120
60
Torque constant N·m/A 0.8 1.3 2.7 0.8 1.3 2.6 0.8 1.4 2.9
kgf·m/A 0.08 0.13 0.28 0.08 0.13 0.27 0.08 0.14 0.30
Max. current Note 2 A 3.0 3.3 2.4 7.8 8.2 5.6 14.8 16.4 12.3
Allowable continuous
current Note 2
A 1.6 1.7 1.3 3.7 3.5 2.8 6 5.4 4.4
Input power supply (driver)
V
DC24
EMF constant (interphase)
V/(r/min) 0.10 0.16 0.32 0.09 0.15 0.31 0.10 0.17 0.34
Phase resistance Ω(20°C) 0.54 0.19 0.07
Phase inductance mH 0.22 0.11 0.06
Inertia moment
INC
(GD2/4)
kg·m2
0.0026
0.0074
0.029
0.0060
0.017
0.067
0.018
0.050
0.20
(J)
kgf·cm·s2
0.0270
0.0750
0.30
0.0610
0.170
0.680
0.180
0.510
2.00
Reduction ratio
30 50 100 30 50 100 30 50 100
Permissible moment
load
N·m
15
40
75
kgf·m
1.5
4.1
7.7
Moment stiffness
N·m/rad
2 x 104
4 x 104
8 x 104
kgf·m/rad
0.2 x 104
0.4 x 104
0.8 x 104
Motor position detector
Incremental encoder: 2,000 pulse/rev
Detector resolution
(quadruplicate)
Note 4 Pulse/rev
240,000 400,000 800,000 240,000 400,000 800,000 240,000 400,000 800,000
Uni-directional
positional accuracy
Sec. (angle)
150
120
120
120
90
90
120
90
90
Angle
compensated
The uni-directional positional accuracies are improved 30% more than the above
values at no disturbance by the angle compensation feature of the HA-680 driver.
Note 5
Mass
kg
0.40
0.62
1.2
Protection structure
Totally enclosed self-cooled type
Environmental conditions
Operating temperature: 0 to 40°C /Storage temperature: -20 to 60°C
Operating humidity/storage humidity: 20 to 80% RH (no condensation)
Resistance to vibration: 24.5 m/s2(frequency 10 to 400 Hz)
Shock resistance: 294 m/s2
No dust, metal powder, corrosive gas, inflammable gas, or oil mist.
To be used indoors, no direct sunlight.
Altitude: less than 1,000 m above sea level
Motor insulation
Insulation resistance: 100 MΩ or more (by 500VDC insulation tester)
Dielectric strength: 500VAC/1 min
Insulation class: B
Safety standard compliance
CE marking
Mounting direction
Can be installed in any direction.
Note 1: The table shows the output shaft values of the actuators.
Note 2: The value when combined with a HA-680 driver.
Note 3: All values are typical.
Note 4: The value of the detector resolution is (motor shaft encoder quadruplicate resolution) x (reduction ratio).
Note 5: Refer to the HA-680 driver manual for further details.
Note 6: For testing conditions, refer to [1-11 Shock resistance] (p.1-15) and [1-12 Resistance to vibration] (p.1-16).

1-5 External drawing
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1-5 External drawing
The external drawings of FHA-C mini series actuators are shown below.
Side-leading cables (standard specification/incremental encoder model)
FHA-8C-xx-E200-C
Unit: mm (third angle projection)
FHA-11C-xx-E200-C
FHA-14C-xx-E200-C
Hollow shaft
inside diameter
Hollow shaft inside
diameter
Motor connector
Encoder connector
Motor cable
Encoder cable
Note: Tolerances may vary due to product manufacturing method (foundry piece,
machine-finished good). Please contact us for the tolerance when it is not indicated in the
dimensions.
Cable pullout (common specification)
Hollow shaft inside
diameter

1-5 External drawing
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Side-leading rear cables (option specification/incremental encoder model)
Unit: mm (third gle projection)
FHA-14C-xx-E200-CK
FHA-11C-xx-E200-CK
FHA-8C-xx-E200-CK
Hollow shaft
inside diameter
Hollow shaft
inside diameter
Note: Tolerances may vary due to product manufacturing method (foundry piece,
machine-finished good). Please contact us for the tolerance when it is not indicated in the
dimensions.
Motor connector
Encoder connector
Motor cable
Encoder cable
Cable pullout (common specification)
Hollow shaft
inside diameter

1-5 External drawing
1-8
Apx
Apx
10
11
1
2
3
4
5
6
7
8
9
10
11
Outlines
Side-leading cables (standard specification/absolute encoder model)
Unit: mm (third angle projection)
Cable pullout (common specification)
FHA-8C-xx-12S17bA-C
Output
rotary unit
Output
rotary unit
FHA-11C-xx-12S17bA-C
Note: Tolerances may vary due to product manufacturing method (foundry piece,
machine-finished good). Please contact us for the tolerance when it is not indicated in the
dimensions.
FHA-14C-xx-12S17bA-C
Output
rotary unit

1-6 Mechanical accuracy
1-9
1
2
3
4
5
6
7
8
9
10
11
Apx
Outlines
1-6 Mechanical accuracy
The mechanical accuracies of the output shaft and mounting flange are shown below for FHA-C mini
series actuators.
Mechanical accuracy
Accuracy items
FHA-8C
FHA-11C
FHA-14C
1. Output shaft
surface runout
0.010
2. Deflection of
output shaft
0.010
3. Parallelism
between the
output shaft end
mounted surface
0.040
4. Concentricity
between the
output shaft and
fitting part
0.040
Note: All values are T.I.R. (Total Indicator Reading).
The measuring for the values are as follows:
1Output shaft surface runout
The dial gauge on the fixed part measures the axial
runout (maximum runout width) of the outermost
periphery of output shaft of the output rotary unit per
revolution.
2Deflection of output shaft
The dial gauge on the fixed part measures the radial
runout (maximum runout width) of output shaft of the
output rotary unit per revolution.
3Parallelism between the output shaft end mounted surface
The dial gauge on the output rotary unit measures the
axial runout (maximum runout width) of the outermost
periphery of the mounting surface (both on the output
shaft side and opposite side) of the output rotary unit
per revolution.
4Concentricity between the output shaft and fitting part
The dial gauge on the output rotary unit measures the
radial runout (maximum runout width) of the fitting part
of the output rotary unit per revolution.
A
4
2
A
B
1
3
B
(2)
(1)
(3)
(4)
Unit: mm