XY & XYZ Gantry Stages / Cartesian Robots

What Is a Gantry Stage / Cartesian Robot?

A gantry precision positioning stage is sometimes called a linear robot or Cartesian robot. Gantries typically provide motion in 2 or 3 linear degrees of freedom (X-Y and X-Y-Z) and are often used for pick and place applications, 3D printing or laser machining, and welding applications. These precision motion systems only share the name and general layout with the high load gantry cranes often used in ports for loading and unloading of cargo.

The advantage of an overhead gantry motion system is its ability to cover a relatively large work area on a relatively small footprint. Gantries often include a manipulator / gripper mounted on a vertical axis. 

PI offers several standard and custom Gantry designs, adapted for different applications, from mechanical bearings and hybrid systems to all air bearing designs, all equipped with linear motors and absolute measuring linear encoders. High-end PI gantry stages can provide nanometer resolution and excellent repeatability, together with high throughput.  Air bearings provide frictionless, wear- and maintenance-free motion without particle generation – important for photonics, optics, and semiconductor applications. Several options are available including the integration of Z-positioning stages (both screw-driven and linear motor-driven), mounting holes for scanners, cameras, lasers, or customer specified tooling. 

Download catalogs

XY & XYZ Overhead Gantries

Air Bearings & Linear Bearings, Linear Motors
Show more

A-341 Hybrid XY / XYZ Gantry Stage

Air Bearings & Linear Bearings, Linear Motors

  • 300x300 to 500x1000mm XY travel
  • 10kg load
  • Absolute encoders, 1nm resolution

  • Z-Stage options: linear motors or ball screws 
  • Dynamic error mapping
  • 2m/sec max velocity (cross axis)
A-351 Overhead Gantry XY / XYZ Stage
Show more

A-351 Overhead XY / XYZ Gantry Stage

Linear Bearings, Linear Motors

  • 300x300 to 500x1000mm XY travel
  • 20kg load
  • Absolute encoders, 1nm resolution

  • Z-Stage options: linear motors or ball screws 
  • Dynamic error mapping
  • 2m/sec max velocity (cross axis)

Controllers for Gantry Stages

These high performance controllers feature state of the art ACS SPiiPlusEC motion control modules and EtherCAT® master, and includes ServoBoost™ for up to eight axes of motion. ServoBoost™ provides better, more consistent servo performance that is insensitive to noise or (load) changes in the system.

This series of motion controllers from PI offers a completely integrated electronics solution, with controller, drives, and power supplies packaged together. The A-81x is in a compact 19-inch rack-mount enclosure for 1, 2, or 4 axes of motion, while the slightly larger A-82x is capable of controlling 4, 6, or 8 axes. These controllers are designed and optimized to work with the PIglide line of air bearing stages which feature direct drive linear and rotary servo motors and high resolution encoders.
Show more

A-824/6/8 PIglide Motion Controller

High Power: 4, 6 & 8 Motion Axes

  • Fully integrated closed-loop servo, amplifier module & power supplies
  • 2000 W continuous, 3900 W peak
  • 3-Phase BLDC / voice coil / DC
  • Quiet PWM drives
  • Sine/cosine and BiSS-C encoders
  • 20A peak output current/axis
This series of motion controllers from PI offers a completely integrated electronics solution, with controller, drives, and power supplies packaged together. The A-81x is in a compact 19-inch rack-mount enclosure for 1, 2, or 4 axes of motion, while the slightly larger A-82x is capable of controlling 4, 6, or 8 axes. These controllers are designed and optimized to work with the PIglide line of air bearing stages which feature direct drive linear and rotary servo motors and high resolution encoders.
Show more

A-811/2/4 PIglide Motion Controller

Compact: 1, 2 & 4 Motion Axes

  • Fully integrated closed-loop servo, amplifier module & power supplies
  • 600W power supply
  • 3-phase BLDC / voice coil / DC
  • Quiet PWM drives
  • Sine/cosine and BiSS-C encoders
  • 10A Peak output current/axis