The MGH 686 and larger models use a closed-frame structure optimised by finite element analysis, built from a fixed bridge and a moving table — the configuration used where measurement accuracy matters most.
The rigid structure delivers maximum stiffness, optimal stability and minimal vibration, holding accuracy throughout the measuring volume. It suits precision metrology, research and complex high-end components. Travel ranges and accuracy classes appear in the specification table below.
Key features
- Closed frame of fixed bridge and moving table — maximum rigidity, minimum vibration
- Three mechanically independent axes, so motion on one does not disturb another
- Centre-driven Y axis eliminates yaw and improves positioning accuracy
- Y-axis scale mounted centrally on the base, minimising Abbe error
- Dovetail location on the Y guideway maintains rigidity and accuracy in motion
- Granite guideways on all three axes give matched thermal behaviour, resistance to ageing deformation and minimal dynamic geometric error
- Self-cleaning preloaded high-accuracy air bearings throughout
- High-performance DC servo motors with ball screws and timing belts for fast, precise drive
- Pneumatic Z-axis counterbalance improves positioning accuracy and stability
- Dedicated highly integrated CNC system with two-computer architecture for reliability and noise immunity
- Supplied with our own measurement software, complete with networking and reporting
