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Roundtest RA-220 Technical Data
SERIES 211 – Roundness Measuring Instruments Turntable
Rotational accuracy
• The RA-220 is a small, manual type Roundness/Cylindricity measuring instrument. Radial: (0.04+6H/10000) m
• Exceptional analysis capabilities and easy operation.
• X/Z axes fine-adjustment mechanism. H: probing height (mm)
• Scale incorporated in the Z axis. Axial: (0.04+6X/10000) m
• Inside/outside diameter continuous measurement function.
• DAT function. X: Probing radius (mm)
• Wide-range detector. Rotational speed: 6 rpm
• Compact and highly accurate (equipped with premium quality air-bearing). Table diameter: 150 mm
Centering range: ±3 mm
Roundtest RA-220 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: 470 mm
Max. table loading: 25 kg
Vertical column (Z-axis)
Vertical travel: 280 mm
Straightness
(in narrow range): 0.2 m/20 mm
Straightness
(in entire range): 0.5 m/100 mm
Parallelism with
turntable axis: 0.5 m/100 mm
Max. probing height: 280 mm from the turntable surface
Max. probing depth: 100 mm (min. ID: 30 mm)
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 (±30%)
Measuring force: 70 to 100 mN (±30%)
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
Types of roundness
evaluation: LSC, MZC, MIC, MCC
Recording device: Built-in thermal line printer (optional
external printer)
Recording
magnification: X5, X10, X20, X50, X100, X200, X500,
X1k, X2k, X5k, X10k, X20k, X50k,
X100k, X200k (15 step)
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
L Number of measuring sections
(1)1-5 cross sections: Roundness, Coaxiality, Flatness
SPECIFICATIONS (2)1-3 cross sections: Radial runout, Perpendicularity
(axis reference)
Model RA-220 (3)2 cross sections: Concentricity, Thickness deviation,
Code No. (mm) 211-642E Parallelism
Code No. (inch/mm) 211-643E (4)3 cross sections: Perpendicularity (plane reference)
(5)3-5 cross sections: Cylindricity
Air supply
Air pressure: 390 kPa
Ai consumption: 30 L/min
Power supply: 100V AC - 240V AC, 50/60Hz
Dimensions (WxDxH): 585.5 x 546 x 775 mm
Mass: 151 kg (main unit), 2 kg (air regulator)
L-49 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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