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Roundtest RA-120
SERIES 211 – Roundness Measuring Instruments
• The Roundtest RA-120/120P are compact, affordable, and simple-to-use devices for measuring part Technical Data
geometry on the shop floor.
Turntable
• They provide the outstanding data analysis capabilities required of a laboratory roundness measuring Rotational accuracy
Radial: (0.04+6H/10000) m
instrument having a ±1000 m wide range detector and a precision turntable with excellent rotational H: Probing height (mm)
accuracy. Axial: (0.04+6X/10000) m
• The RA-120 model has a dedicated processor and control panel incorporated in the main unit for X: probing radius (mm)
controlling operations. Rotational speed: 6 rpm
• The RA-120P is a PC-based model with all operations controlled via ROUNDPAK software (optional). Table diameter: 150 mm
Centering range: ±3 mm
Levelling range: ±1°
Max. probing
diameter: 280 mm (380 mm when the detector
orientation is changed to the vertical
position, only samples up to 50 mm
from the table surface can be
measured.)
Max. workpiece
diameter: 440 mm
Max. table loading: 25 kg
Roundtest RA-120 Vertical column (Z-axis)
Vertical travel: 280 mm
Max. probing height: 280 mm from the turntable surface
Max. probing depth: 100 mm (min. ID: 30 mm)
Optional X-axis stop
Horizontal arm (X-axis)
Horizontal travel: 165 mm (Including a protrusion of
25 mm over the turntable axis)
Probe and stylus
Measuring range: ±1000 m
Measuring force: 70 to 100 mN
Standard stylus: 12AAL021, carbide ball, 1.6 mm
Measuring direction: Bi-directional
Stylus angle
adjustment: ±45° (with graduations)
Data analysis unit
Processing unit: Built-in (PC with Roundpak-120P)*
Data sampling
Optional Z-axis scale unit points: Max. 3600 points/rotation
SPECIFICATIONS Types of roundness
evaluation: LSC, MZC, MIC, MCC
Recording device: Built-in thermal line printer (optional
Model RA-120 external printer)*
Code No. 211-621E 211-622E 211-623E Recording
Remarks With mechanical table With DAT function (mm) With DAT function (inch/mm) magnification: X5 to X200,000 (15-steps),
Auto (X1 to X500,000)*
Roughness component
reduction: Low pass filter, band pass filter
Filter type: 2CR-75%, 2CR-50%, 2CRPC-75%
(phase corrected), 2CRPC-50% (phase
corrected), Gaussian, filter OFF
Cutoff values: 15 upr, 50 upr, 150 upr, 500 upr,
15-150 upr, 15-500 upr, 50-500 upr,
Manual setting*
Roundtest RA-120P Number of
measuring sections: Max. 5-section (100-section)*
Air supply
L Air pressure: 390 kPa
Air consumption: 30 L/min.
Power supply: 100V AC - 240V AC, 50/60Hz
Dimensions (WxDxH): 450 x 360 x 636 mm
Mass: 32 kg (main unit), 2 kg (air regulator)
*RA-120P
SPECIFICATIONS 211-625E RA-120P 211-627E
With mechanical table 211-626E With DAT function (inch/mm)
Model With DAT function (mm)
Code No.
Remarks
L-47 Mitutoyo operates a policy of continuous improvement that aims to provide the customer with the benefit of the latest technological advances.
Therefore the company reserves the right to change any or all aspects of any product specification without notice.
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