1. Rotation: The part is placed on a rotating table (Turntable type) or a probe rotates around the fixed part (Rotating Stylus type).
2. Contact/Sensing: A sensitive stylus maintains contact with the surface. As the part rotates, the stylus moves in and out based on surface irregularities.
3. Data Analysis: The sensors convert this movement into a digital profile. The software applies mathematical filters (like the Least Squares Circle – LSC method) to calculate the deviation from a perfect circle. 

• Roundness (Circularity): The deviation of the profile from a perfect circle.
• Cylindricity: Extending roundness measurements along the entire length of a cylinder to check for tapering or bowing.
• Concentricity/Coaxiality: Measuring how centered two or more circles are relative to each other.
• Run-out: Measuring the total variation of a surface as the part is rotated 360°. 

• AI-Driven Alignment: New 2026 models from Mitutoyo and Taylor Hobson feature Automatic Centering and Leveling (ACL). Using AI, the machine automatically aligns the part in seconds, a task that used to take technicians several minutes.
• Sub-Micron Precision: Modern spindles now achieve rotational accuracies of less than 0.02 µm, essential for the tight tolerances of high-tech manufacturing.
• Multi-Sensor Capability: Some 2026 systems combine tactile probes with non-contact optical sensors to measure delicate surfaces without scratching them. 

• Automotive: Inspecting engine pistons, crankshafts, and fuel injector needles to reduce friction and noise.
• Aerospace: Verifying the precision of jet engine bearings and turbine shafts where even a micron of error can cause catastrophic failure.
• Medical: Ensuring the roundness of prosthetic hip joints and surgical tools.
• Bearing Industry: Critical for high-speed ball bearings to ensure smooth rotation and long life. 

• Contact Method (Traditional): A sensitive diamond-tipped stylus or probe traces along the workpiece’s surface. As the stylus moves up and down (Z-axis) while traversing horizontally (X-axis), the sensors record coordinate points.
• Non-Contact Method (2026 Trend): Modern systems, such as the Keyence VR-6000, use structured light, lasers, or optical sensors to capture wide-area 3D measurements in seconds without physical contact.
• Data Processing: Specialized software, such as CMM-Manager, processes the collected point data to compare the actual shape against nominal CAD designs. 

• Combined Measurement: Many 2026 models integrate both contour and surface roughness measurement into a single device, such as the Mitutoyo Formtracer, saving time and reducing equipment costs.
• High Precision: Advanced machines offer sub-micron resolution (often as low as 0.016 µm) and high-speed drives reaching up to 80 mm/s.
• Automated Analysis: CNC-controlled machines allow for “one-click” automated measurement sequences, which are essential for high-volume production lines. 

• Automotive: Inspecting the curvature and alignment of body panels, engine valves, and brake calipers.
• Aerospace: Verifying turbine blade profiles and fuselage panels for aerodynamic efficiency.
• Electronics: Analyzing semiconductor wafer flatness and circuit board surface accuracy.
• Medical Devices: Ensuring the exact surface contours of implants and surgical instruments for patient safety. 

Model No. CMM-V564CNC CMM-V686CNC CMM-V8106CNC CMM-V8126CNC

Measuring Range (X,Y,Z) 500x600x400mm 600x800x600mm 800x1000x600mm 800x1200x600mm

Resolution 0.0001mm/0.00001″ Renishaw reflecting metal tape scale

Measuring Accuracy

Repeatability

Main Structure 3-Axis DIN00 grade granite; Bridge type measuring machine

Motion System 3-Axis with USA AMETEK & JAPAN SANYO high performance DC motor drive; USA GATES synchronous belt system

Drive Speed Uniaxial Max: 520mm/s; Acceleration Max: 1350mm/s

Pressure System 3-Axis with FESTO pressure control configuration; Japan SMC self-clean air floating and filter system

Measuring System 3-Axis Renishaw high accuracy reflecting metal tape measuring scale system

Probe System (Optional) 1. Renishaw MH20i (360° rotating, 15° indexing manual trigger probe)
… (Full list of 8 options and standard accessories as pictured) …

Control System Renishaw UCC control system

Measuring Software RATIONAL DIMIS CAD; New auto 3D graphical display measuring software

Computer Hardware 2.5G Dual-Core Computer; Win 10; 22″ LED monitor

Dimension of Machine (LxWxH) 1100x1400x2300mm 1400x1700x2800mm 1600x1900x2800mm 1600x2100x2800mm

Machine Weight 900kg 1300kg 1700kg 1900kg

Maximum Loading 500kg 800kg 1000kg 1000kg

Air Supply 0.6 – 0.8 Mpa

Power Requirement 100-240VAC ±10% 50-60HZ

Environment Requirement Storage temperature: 15°C – 32°C (Humidity < 70%RH); Best measuring temperature: 18°C – 22°C (Humidity 45%~65%RH)

Optional Accessory Fixture/Stylus kit/Replacement rack/Sensor module/Image measuring system/Other special software or accessory.