Compact Roundness
Roundtest
RA-120P

Contact
RA-120P
Mitutoyo
Contact

This is a compact roundness tester with D.A.T. (Digital Adjustment Table) function.

Available on backorder

Catalogue

Windows graphical interface

By using a mouse and buttons, identified by corresponding icons, to control the machine, the Roundtest RA-120P’s interface provides excellent usability. Functions such as recalculation and graph reading are handled swiftly with easy-to-understand operations.

Measurement screen makes ample use of graphs

Multi-analysis function

Complete with a wide range of functions including partial enlargement, auxiliary line setup, color change, displacement/angular difference of data between two points. Also equipped with notch processing and graph reading functions, which make the machine useful in research departments. Recalculation can also be performed when the filter and evaluation method is changed.

Simplified layout function

Specifications

Model RA-120P
Turntable
Rotational accuracy:  (0.04+6H/10000)µmH: Probing height (mm)
Rotating speed:  6rpm
Table top diameter:  ø 1.96” (150mm)
Centering range :±.12” (3mm)
Leveling range:  ±1°
Maximum probing diameter:  ø 11” (280mm)
Maximum workpiece diameter:  ø 17.3” (440mm)
Maximum workpiece weight:  55 lbs (25kg)
Vertical column  (Z-axis)
Vertical travel:  11” (280mm)
Feeding: 1.18” (30mm)/rev. (coarse) 0.039” (1mm)/rev. (fine)
Maximum probing height:  11” (280mm) from the turntable top
Maximum probing depth:  3.94” (100mm) (min. ID: 1.18”(30mm)
Horizontal arm  (X-axis)
Horizontal travel:  65” (165mm) (Including a protrusion of 1” (25mm) the turntable rotation center)
Probe and stylus
Measuring range:  ±1000μm
Measuring force:  7 to 10mN
Standard stylus:  12AAL021, carbide ball, ø1.6mm
Measuring direction:  Two directional
Stylus angle adjustment:  ±45° (with graduations)
Data analysis unit:
Data sampling points:  3,600 points/rotation
Data analysis items: Roundness, Coaxiality, Concentricity, Flatness, Circular runout (radial), Circular runout (axial), Squareness (against axis), Squareness (against plane), Thickness deviation, Parallelism
Reference circles for roundness evaluation:  LSC, MZC, MIC, MCC Recording device:
Recording device: Built-in thermal line printer
Recording magnification:  X1 to X500,000
Roughness component reduction: Low pass filter, band pass filter
Filter type: 2CR-75%, 2CR-50%, 2CR-75% (phase corrected) 2CR-50% (phase corrected), Gaussian, filter OFF
Cutoff value: 15upr, 50upr, 150upr, 500upr, Manual
15-150upr, 15-500upr, 50-500upr, Manual

The turntable displays centering and leveling adjustments digitally, making this challenging task easy enough for even an untrained operator to perform, through these four simple steps:

1. Preliminary measurement of two cross sections on the workpiece.
2. The centering and leveling adjustment values are displayed.
3. The digital micrometer heads on the rotary table are adjusted to match the values displayed.
4. Centering and leveling is complete. [Centering range : ±3 mm – Leveling range : ±1°]