FORM MEASUREMENT

Roundness / Cylindricity Measurement

ROUNDTEST RA-2200 Series

Catalog No.E15001(3)ROUNDTEST RA-2200
Sliding detector-unit holder provided as a standard feature

Safety mechanism provided as a standard feature

The detector-unit holder is equipped with a sliding mechanism,
enabling one-touch measurement of a workpiece with a deep holehaving a thick wall, which has been difficult with the conventional
standard arm.
Sliding distance: 112 mm

A safety mechanism is incorporated
into the detector unit area. A
collision-sensing function has been
added to the detector unit (when
it is in the vertical orientation)
to prevent collision in the Z-axis
direction. Additionally, an accidental
collision prevention function,
which stops the system when thedetector unit displacement exceeds
its range, has been added. Whenan accidental touch is detected,
the dedicated analysis software(ROUNDPAK) senses the error andautomatically stops the system.

The detector-unit holder can be
stopped at a position sufficiently
higher than the workpiece along
the Z-axis, and then lowered andpositioned to make measurements.
Furthermore, internal/external
diameters can be easily measured
with the continuous internal/
external diameter measurement
function.
The photo shows
RA-2200 + vibration isolator with monitor arm.

High accuracy even at high positioning speeds

The photo shows
RA-2200 +vibration isolator with side table.

RA-2200AS/AH models are supplied as standard
with an automatic centering and leveling turntable,
freeing the operator from the centering and levelingtask.

All models are equipped with a highly accurate
turntable that enables simple and accurate centeringand leveling of the workpiece, which account for the
majority of the essential setup work for measuring
roundness/cylindricity.

RA-2200DS/DH models are supplied as standard witha navigation function that quickly and simply guides
the operator through the centering and levelingtask, as though the task were being performed by anexpert.

Continual development has resulted in the highest drive speed within
the class.
• Vertical direction (Z-axis column): Max. 50 mm/s
• Radial direction: Max. 30 mm/s

Continuous OD/ID measurement function
Continuous internal/external diametermeasurement is possible withoutchanging the detector position.

Equipped with a highly accurate turntable that enables simple and accurate centering and leveling of the workpiece
The table provides high rotational accuracy (radial 0.02+3.5H/10000 μm; axial 0.02+3.5X/10000 μm), enabling the system to measure flatness andother characteristics, in addition to roundness/cylindricity, at a level that suits any application.
For centering and leveling support, you can select either the A.A.T. (Automatic Adjustment Table) or D.A.T. (Digimatic Adjustment Table).
A.A.T. (Automatic Adjustment Table)

D.A.T. (Digimatic Adjustment Table)

Incorporating an Automatic Adjustment Table (A.A.T.),
the top-of-the-line RA-2200AS/AH models relieve theoperator of workpiece centering and leveling.

A guidance system (D.A.T.) is incorporated into the turntables on the RA-2200DS/DH
models to help the operator perform manual centering and leveling smoothly and simply.

Turntable axis
Initial misalignment of axes

Turntable axis
Workpiece

Turntable axis
Workpiece

Workpiece

Workpiece

Centering range: ±3 mm
Leveling range: ±1º

Turntable axis Initial misalignment of axes

Initial misalignmentof centers atturntable surface

Initial misalignmentof centers atturntable surface

Centering range: ±5 mm
Leveling range of inclination: ±1º

Preliminary measurement

Centering/leveling complete

Preliminary measurement of
two cross-sections ’A’ and ‘B’.

Preliminary measurement isfollowed by automatic centeringand leveling.

Preliminary
measurement

Display of misalignments

Feed the digital
micrometer headof the trntable by
the deviation displayed.

Simpleadjustment

Highly accurate repeat measurements
Mitutoyo’s linear scales are incorporated into the X-axis positioning
sensor, directly sensing the displacement of the drive unit toachieve highly accurate positioning, which is essential for repeat
measurements.

Spiral Measurement/Analysis
The spiral-mode measurement function combines table rotation andrectilinear action allowing cylindricity, coaxiality, and other data to beloaded as a continuous data set.

Partial circle measurement function
Even if a workpiece cannot be measured by physically rotating it bya full turn due to some obstruction (projection), segments of thecircumference can be measured.

Roughness detector unit support
When an optional roughness
detector unit is incorporated
into the system it can measure
workpiece surface roughness in thecircumferential direction aroundthe θ -axis, as well as roughness
in the direct-drive directions along
the X- and Z-axes with the tablestopped.

Measurement through X-axis tracking
Measurement while tracing is possible through a built-in linear scalein the X-axis. This type of measurement is useful when displacement
due to form variation exceeds the measuring range of the sensor,
and X-axis motion
is necessary tomaintain contact
with the workpiecesurface.

Centering/levelingcomplete

Preliminary measurement of
two cross-sections ’A’ and ‘B’.

Centering and leveling using an A.A.T. or D.A.T.* can be integrated in the measurement procedure (part program). This can prevent mistakes such as
forgetting to center and level during measurement and is intended to standardize measuring work through part-program measurement.
*Models equipped with a D.A.T. require manual adjustment of centering and leveling misalignments.

Retrofit kits can be used with models equippedwith motorized detector-unit holders
Retrofit kits are available for the RA-2200AS and RA-2200AH to
add the automatic measurement functionality found in their PLUS
counterparts.
*See page 4 for details.

2

3

ROUNDTEST RA-2200 PLUS
Continuous OD/ID measurement function

Highly accurate turntable

Continuous internal/external diametermeasurement is possible withoutchanging the detector position.

The table provides high rotational accuracy (radial 0.02+3.5 H/10000μm; axial 0.02+3.5X/10000 μm), enabling the system to measureflatness and other characteristics, in addition to roundness/cylindricity,
at a level that suits any application.

Highly accurate positioning sensor

Highly accurate repeat measurements

The photo shows
RA-2200 PLUS+ vibration isolator with monitor arm.**
Printer table is a special Accessory.

The photo shows
RA-2200 PLUS + vibration isolator with side table.

Simple and accurate centering and leveling of the workpieceHigh accuracy even at high positioning speeds

The system comes standard with the A.A.T. (Automatic Adjustment
Table) positioning and leveling function, freeing the operator from thetask of centering and leveling the workpiece.

Continual development has resulted in the highest drive speed within
the class.
• Vertical direction (Z-axis column): Max. 50 mm/s
• Radial direction: Max. 30 mm/s

A.A.T. (Automatic Adjustment Table)
Incorporating an Automatic Adjustment Table (A.A.T.), the top-of-the-line
RA-2200 PLUS models relieve the operator of workpiece centering andleveling. Turntable axis
Turntable axis
Initial misalignment of axes

Workpiece

Workpiece

Centering range: ±3 mm
Leveling range: ±1º

Partial circle measurement function
Even if a workpiece cannot be measured by physically rotating it bya full turn due to some obstruction (projection), segments of thecircumference can be measured.

Initial misalignmentof centers atturntable surface

Preliminary measurement

Centering/leveling complete

Preliminary measurement of
two cross-sections ’A’ and ‘B’.

Preliminary measurement isfollowed by automatic centeringand leveling.

Mitutoyo’s linear scales are incorporated into the X-axis positioning
sensor, directly sensing the displacement of the drive unit toachieve highly accurate positioning, which is essential for repeat
measurements.

Roughness detector unit support
When an optional roughness
detector unit is incorporated
into the system it can measure
workpiece surface roughness
in the circumferential direction
around the θ -axis, as well as
roughness in the direct-drive
directions along the X- andZ-axes with the table stopped.

A Mitutoyo linear scale is incorporated into the X-axis positioning
sensor, directly sensing the displacement of the drive unit toachieve highly accurate positioning, which is essential for repeat
measurements. Furthermore, continual development has resulted in
the highest drive speed within the class while achieving high accuracy
even at high positioning speeds.

Detector unit II (option)
This highly adjustable detector unit is for installation on motorized
detector-unit holders.
Features of this detector unit include the ability to use alternative styli
for the RA-2200* and freely change the angle of the stylus.
*See page 7 for alternative styli.

Spiral Measurement/Analysis
The spiral-mode measurement function combines table rotation andrectilinear action allowing cylindricity, coaxiality, and other data to beloaded as a continuous data set.

Detector unit orientation programmable for CNC measurement
This function controls the orientation of the arm holding
the detector unit (between vertical and horizontal) andthe detector unit rotation mechanism (between 0 and
270 degrees in 1-degree increments), making it possible
to continuously and automatically measure internal/
external diameters as well as top/bottom surfaces.
Additionally, a full-featured offline teaching function
simplifies the creation of part programs.

4

Measurement through X-axis tracking
Measurement while tracing is possible through a built-in linear scalein the X-axis. This type of measurement is useful when displacement
due to form variation exceeds the measuring range of the sensor, andX-axis motion is necessary to maintain contact with the workpiecesurface.

5Roundness/Cylindricity measurement/Analysis software

ROUNDPAKROUNDPAK provides simple manipulation using a mouse and icons
Simple operations even with a full set of parameters and analysis functions

A wide variety of graphics functions

A wide variety of parameters including thosefor roundness/cylindricity, as well as flatness andparallelism, are provided as standard features. You canvisually select these parameters using icons.
ROUNDPAK also comes with specialized functions,such as the design value best-fit analysis function,
the harmonic analysis function, and a function
for recording the peak or trough points on acircumference. Data that has already been collected can be easily used for recalculation, or deleted.

Analysis results such as cylindricity and coaxiality can be visually
expressed in 3D graphics.

Recalculation

Icon View
Machine Control View

Off-line measurement procedure programming function
Patent registered in Japan, USA
Patent pending in Europe

An offline teaching function is provided
to create a part program (measurement
procedure) without an ac tualmeasurement target, enabling the user
to virtually execute the measurement
operation in a 3D simulation window.
You can also display warnings* about
the risk of collision on the simulation
window.
* This function is for RA-2200 PLUS
only.

Operation Coodinates View

Normal display

Wire-frame display

Surface-map display

Shading display

StatusMonitor

MitutoyoLauncher support

Remote machine monitoring

Quick Launcher is provided as a standard feature. This enables simple
and intuitive operation, so part programs can be run easily. Part
programs can also be run by scanning barcodes or QR codes.

Workpiece View
Part Program List
Data deletion

Freedom in laying out the graphics anddata obtained from measurements

Server• Collects and visualizes operational status data
• Supports MT Connect communication

The customer can create reports in custom formats by specifying how
the analysis results will be displayed, as well as the sizes and positionsof graphics. The analysis result window can be directly utilized as alayout window. Since the measurement procedure, including thelayout information, is saved, the entire process, from measurement
start, calculation, result saving, and finally to printing, can be
automatically executed.

Harmonic tolerance verification / Velocity analysis
Analysis of bearing sliding surfaces is provided as a standard feature.
Result View

67

Optional Accessories

Cutter markType

12AAL024
SR0.25 mm sapphire

12AAL025
tungsten carbide

Order No.

ø1 tungsten carbide

ø1.6 tungsten carbide

Disk

12AAL032

12AAL033

ø0.5 mm tungsten carbide (Depth 2.5 mm) ø1 mm tungsten carbide (Depth 5.5 mm)

12AAL034

12AAL035
ø 1.6 mm tungsten carbide

66

146
147.5

2X-long type notch *1

2X-long type deep groove *1

2X-long type corner *1

2X-long type cutter mark *1

2X-long type Small hole *1

Order No.

12AAL036
ø 3 mm tungsten carbide

12AAL037
SR0.25 mm sapphire

12AAL038
SR0.25 mm sapphire

12AAL039
tungsten carbide

12AAL040
ø1 mm tungsten carbide

146

146

9.5
R15

150°

R1

0.5

°
105

145

ø1 tungsten carbide

ø4

ø2

Type

3X-long type *1

3X-long type deep groove *1

Order No.

12AAL041

12AAL042

12AAL043

12AAL044

12AAL045

SR0.25 mm sapphire

For mounting CMM stylus(mounting thread M2)

For mounting CMM stylus(mounting thread M2)

For mounting CMM stylus(mounting thread M2)

227.5

226

Stylus shank(2X-long groove)*1

148.5

M2

66

3.5

56

ø4

68.5
ø4

ø4
SR0.25 (sapphire)

M2 Depth 5

3.5

226
227.5

3.5

5.5

ø1.6 tungsten carbide

Dimensions(mm)

Stylus shank(standard groove)ø4

ø 1.6 mm tungsten carbide

ø4Stylus tip

Stylus shank

23.1

ø2.4

12
33

3

44.2

33

1.2

33
44.1

43.8

M2

■ Options common to the RA-2200 and RA-2200 PLUS

172°

58
（69.6）

146■ Cylindrical square
350850■ Centering chuck(ring operated)
211-032
211-014
Suitable for holding small parts
Suitable for holding longer parts
with easy-to-operate knurled-ringand those requiring a relatively
clamping.
powerful clamp.
•Holding capacity:•Holding capacity:
Internal jaws: OD = ø2 - ø35 mm, Internal jaws: OD = ø1 - ø36 mm,
ID = ø16 - ø69 mm
I D = ø25 - ø68 mm
External jaws: OD = ø35 - ø78 mm External jaws: OD = ø25 - ø79 mm•External dimensions (DxH):•External dimensions (DxH):
ø118 x 41 mm
ø157 x 70.6 mm•Mass: 1.2 kg•Mass: 3.8 kg(key operated)

146

146

SR0.25 (sapphire)

SR0.25 (sapphire)

33
44.6

■ Centering chuck

8

Hard metal

ø4

9.5
3.4

ø4

7.8

9.5

146
148.2

°
105

138.3

145

ø2

ø2

7

ø3 tungsten carbide

Dimensions
(mm)

ø4

Stylus tip

66

ø4

Type

5

ø1 tungsten carbide 67.5

R1

ø0.5 tungsten carbide 67.5

0.5

20

44.7

ø1.6 tungsten carbide

66
R0.25 (tungsten carbide)ø2

12AAE307
ø 1.6 mm tungsten carbide

ø4

Hard metal

Stylus tip

Dimensions
(mm)

5.5

66

66

tungsten carbide
ø4

ø0.7

Deep hole B

12AAE308
ø 1.6 mm tungsten carbide

2X-long type *1

68

ø0.3

Deep groove

12AAE305
ø 0.5 mm tungsten carbide

ø0.6

ø4

Flat surface

ø0.5 mm ball

12AAE304
ø 0.8 mm tungsten carbide

ø4

ø4.5

Crank (ø1.0)

ø4

67.9
0.5

ø4

ø12

Dimensions
(mm)

20

Crank (ø 0.5)

5.5

ø 12 mm tungsten carbide

3

66

ø4

12AAL031

Stylus tip

ø1.2

66

2.5

Order No.

ø1.2

ø4

66

ø1.6 tungsten carbide

Order No.

ø2.4

Type

66

ø0.5 tungsten carbide40

ø0.8 mm ball

12AAE303
ø 1.6 mm tungsten carbide

Type

ø1.2

12

ø 1.6 mm ball

68.8

8.1

ø 1.6 mm tungsten carbide

ø2.4

12AAL030

ø 0.5 mm tungsten carbide

9.5

12AAL029

ø 1.6 mm tungsten carbide

ø0.3

58

45.3

44.6

44.6

ø2.4

12AAL028

ø 1 mm tungsten carbide

ø0.6

ø1.2

33

ø0.3

12AAL027

ø 0.8 mm tungsten carbide

ø4

12AAL026

Stylus tip

ø0.8 tungsten carbide

165°
33

33

ø1.6 mm ballOrder No.

Dimensions
(mm)

165°

69.7

43.8

ø2.4

Extra small hole (Depth 3 mm)

33

ø2.4

Small hole (ø1.6)

Dimensions
(mm)

6.9

66

ø1.2

ø4

3.4

ø4

8

7

ø4

ø4
5.5

9.5
R15

°
105

°
140

ø1.2

0.5

44.7

12AAE306

ø 2.4

R1

66

ø 1.6 mm tungsten carbide

65

ø2

SR0.25 (sapphire)

SR0.25 (sapphire)

Small hole (ø1.0)

150°

66

Deep hole A.4
ø2

Small hole (ø 0.8)°
105

Hard metal

Notch

12AAE309
ø 3 mm tungsten carbide

.2
ø1

Type

66
68.2

58.8

9.5
ø2

66
67.5

65

ø2

Standard

12AAE301
ø 1.6 mm tungsten carbide
ø 2.4

ø3 tungsten carbide

Flat surface

12AAE302
ø 1.6 mm tungsten carbide

ø1.2

ø1.6 tungsten carbide

Dimensions(mm)

Stylus tip

Groove

12AAE310
ø 1.6 mm tungsten carbide

ø2.4

Corner

12AAL023
SR0.25 mm sapphire

8.8

Deep groove

12AAL022
ø3 mm tungsten carbide

2.8

Notch

12AAL021
ø1.6 mm tungsten carbide

7.8

Stylus tip

Standard (Standard accessory)

9.5

Order No.

ø4

Type

■Styli for RA-2200 PLUS

8.1

■ Styli for RA-2200 (Option)■ Micro-chuck

211-031
Used for clamping a workpiece(less than ø1 mm dia.) that thecentering chuck cannot handle.
•Holding capacity: ø0.2- ø1.5 mm•External dimensions (DxH):
ø107 x 48.5 mm•Mass: 0.6 kg■ Magnification
calibration gage

•Straightness: 1 μm
•Cylindricity: 2 µm
•External dimensions (DxH):
ø70 x 250 mm•Mass: 7.5 kg

211-045
Used for normalizing detector
magnification by calibrating
detector travel against
displacement of a micrometer
spindle.
•Maximum calibration range:
400 μm•Graduation: 0.2 μm•External dimensions (WxDxH):
235 (max) x 185 x 70 mm•Mass: 4 kg

*1: Measuring is only possible in the vertical direction.
*2: Customized special interchangeable styli are available on request. Please contact any Mitutoyo office for more information.

89

Specifications

Dimensions■ RA-2200■ Dimensions■ RA-2200 PLUS

Model No.
Z-axisRotational accuracy

Turntable unit

Vertical drive unit
(Z-axis)Radial drive unit
(X-axis)Detector

Other

10

Radial direction
Axial direction

Rotating speed
Table effective size
Centering/leveling adjustment
Centering adjustment range
Leveling adjustment range
Max. loading mass
Max. probing diameterMax. loading diameter
Straightness accuracy
Parallelism to rotation center
Traverse speed
OD
Max. probingheightID
Max. probing depth (with standard stylus)
Straightness accuracy
Horizontal to rotation center
Traverse range
Traverse speed
Measuring force
Stylus design, material
Standard
Measuringrange
Follow
Other
Power supply
Air pressure
Air consumption
Mass (main unit)

510

420

510

φ235

380

405

AS/DS: 900[AH/DH: 1100]

AS/AH: 405(DS/DH: 375)

Standard column： 900〔High column: 1100〕

with vibration isolator and side table

420

RA-2200 PLUS
Standard column (Vertical travel: 300 mm)
High column (Vertical travel: 500 mm)(0.02+3.5H/10000) µm H: probing height (mm)(0.02+3.5X/10000) µm X: Distance from the center of rotation (mm)2, 4, 6, 10 rpm
ø235 mm
A.A.T
±3 mm
±1 °
30 kg
256 mm (OD), 344 mm (ID)
580 mm0.10 µm/100 mm ( c2.5) 0.15 µm/300 mm ( c2.5)
0.10 µm/100 mm ( c2.5) 0.25 µm/500 mm ( c2.5)
0.7 µm/300 mm (Referential generatrix line)
1.2 µm/500 mm (Referential generatrix line)
Max. 50 mm/s (during measurement: 0.5/1/2/5 mm/s)
300 mm
500 mm
300 mm
500 mm
26 mm for ø12.7 mm or more, 104 mm for ø32 mm
0.7 µm/150 mm ( c2.5)
1.0 µm/150 mm (Referential generatrix line)
175 mm (-25 mm to +150 mm from the rotation center)Max. 30 mm/s (during measurement: 0.5/1/2/5 mm/s)
40 mN
ø1.6 mm tungsten carbide±400 μm/±40 μm/±4 μm/±5 mm
Accidental touch function
Measuring direction : one direction
100 V ～ 240 V
0.39 MPa
30 L/min in standard state (80 L/min or more as air source)
180 kg200 kg667
Max. 940

with monitor arm*

405

Other

Power supply
Air pressure
Air consumption
Mass (main unit)

AS/AH: ø235
(DS/DH: ø200)

221

830

660

Max. 800 in width

700

Other

667
Max. AS/AH: 940(DS/DH: 910)

700

Detector

221

380

Radial drive unit
(X-axis)Rotating speed
Table effective size
Centering/leveling adjustment
Centering adjustment range
Leveling adjustment range
Max. loading mass
Max. probing diameterMax. loading diameter
Straightness accuracy
Parallelism to rotation center
Traverse speed
OD
Max. probingheightID
Max. probing depth (with standard stylus)
Straightness accuracy
Horizontal to rotation center
Traverse range
Traverse speed
Measuring force
Stylus design, material
Standard
Measuringrange
Follow

405

Vertical drive unit
(Z-axis)Radial direction
Axial direction

RA-2200 PLUS

700

Turntable unit

RA-2200DS
RA-2200AH
RA-2200DH(0.02+3.5H/10000) µm H: probing height (mm)(0.02+3.5X/10000) µm X: Distance from the center of rotation (mm)2, 4, 6, 10 rpm
ø235 mm
ø200 mm
ø235 mm
ø200 mm
A.A.T
D.A.T
A.A.T
D.A.T
±3 mm
±5 mm
±3 mm
±5 mm
±1 °
30 kg
300 mm
580 mm0.10 µm/100 mm ( c2.5) 0.15 µm/300 mm ( c2.5)
0.10 µm/100 mm ( c2.5) 0.25 µm/500 mm ( c2.5)
0.7 µm/300 mm (Referential generatrix line)
1.2 µm/500 mm (Referential generatrix line)
Max. 50 mm/s (during measurement: 0.5/1/2/5 mm/s)
300 mm
500 mm
300 mm
500 mm
85 mm for ø32 mm or more, 50 mm for ø7 mm
0.7 µm/150 mm ( c2.5)
1.0 µm/150 mm (Referential generatrix line)
175 mm (-25 mm to +150 mm from the rotation center )Max. 30 mm/s (during measurement: 0.5/1/2/5 mm/s)
10 ～ 50 mN (switching 5-step)ø1.6 mm tungsten carbide ball±400 µm/±40 µm/±4 µm±5 mm
In/out switching feature, Measuring force switching feature (5-step), Stylus angle scale markings (±45 º),Collision detection function for Z-axis direction, Sliding detector holder (plus 3 rotational positions)
100V ～ 240 V
0.39 MPa
30 L/min in standard state (80 L/min or more as air source)
180 kg200 kgRA-2200AS

Model No.
Rotational accuracy

Unit: mm

RA-2200

830

Max. 936 in width* Printer table is a special accessory.

11

081 2212(3)Ae-(CM)NE-(JP10), Printed in Japan

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and even, if deemed cost-effective, take your criticalmeasurement challenges in-house on a sub-contract
basis.

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