PI releases V-781 XY stage series for precision motion systems

PI has introduced the V-781 XY Stage series for use in high-performance motion systems. Designed as a monolithic, single-module XY stage rather than a stack of separate linear axes, the V-781 aims to improve straightness, reduce yaw, and maintain geometric stability in a compact, low-profile form. It features direct-drive motors, crossed roller bearings, and nanometer-resolution encoder feedback to support accurate and consistent motion performance.

Key features

• 110x110mm, 210x210mm and 310x310mm travel ranges
• Crossed roller bearings for ultra-smooth motion with superior load and moment capacity
• Direct measuring linear encoders with resolution to 1nm
• High acceleration (up to 1g) and velocity (up to 1m/s)
• Absolute encoder option eliminates the need for homing, enhancing start-up safety and operational efficiency
• Monolithic XY design eliminates misalignment issues common with stacked axes
• Optimized for maximum precision and stiffness, up to 50kg load capacity
• Lower profile with a wider bearing base for improved motion straightness and reduced pitch/yaw errors
• Ironless direct-drive 3-phase linear motors, for cogging-free, friction-free, and backlash-free motion
• Long service life and minimal maintenance, ideal for 24/7 industrial use
• Pre-lubricated for lifetime performance

Performance and integration with advanced motion controllers

The V-781 provides bidirectional repeatability of ±0.07 microns and maintains consistent geometric accuracy in flatness, straightness, pitch, and yaw. It is suitable for applications such as semiconductor wafer inspection, precision metrology, and micro-assembly, where sub-micron accuracy and dynamic response are required. The V-781 stages can be integrated with PI’s A-81x series EtherCAT-based motion controllers for optimal performance.

ACS hardware-based motion controllers support multi-axis synchronization and work with third-party EtherCAT devices. Optional PILOT algorithms can improve stability and dynamics while helping to reduce motor current.

Why choose V-781 XY stages?

The V-781 XY stage series is designed for precision automation and motion control applications. It features direct-drive technology, advanced mechanics, and compatibility with various controllers, making it suitable for applications that require accuracy, stability, and speed.

Industries served

Semiconductor wafer test and inspection, additive manufacturing, laser micro-processing and beam steering, photonics alignment, surface metrology and profilometry, biotech, life sciences, manufacturing, automation

Specifications, datasheet: Ultra-High Precision Direct Drive XY Linear Stage

For more information, visit pi-usa.us.