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XY Gantry System – SAX

The Dover SAX gantry stage is a versatile split-axis XY gantry system utilizing high-efficiency, non-contact, ironless linear motors for excellent velocity stability.

All Dover products can be configured to your specifications.Learn More


The non-contact, cog-free linear motors of the SAX gantry system are ideally suited for pick-and-place, 3-D printing, step and settle, as well as scanning applications. They produce quiet motion with low velocity ripple. Non-contact absolute encoders are standard for the SAX. They combine precision position feedback with instant position on power-up, so there is no need for homing routines.

Encoders are positioned close to the customer’s point of interest to reduce Abbe errors. More traditional incremental feedback is an option as well. Utilizing lightweight aluminum construction, the SAX combines high-accuracy and sub-micron repeatability, with angular errors less than 50 arc-seconds. Standard mounting hole configurations allow for mounting other Dover stages such as the RTR rotary table on the lower carriage and KV and MMX miniature linear stages on the upper carriage.


The split-axis gantry is ideal for high-accuracy and high-duty cycle applications.  A few ideal applications are:

  • Imaging
  • Automated part inspections
  • 3-D printing
  • Material dispensing
  • Metrology

Design Features

  • High accuracy and repeatability with optimized encoder locations
  • High speed and acceleration with ironless, cog-free motors
  • Low audible noise
  • Configurable and Customizable
  • High flex cable


Base ModelY Axis (Upper)X Axis (Lower)
Travel (mm)290270
Accuracy (μm)1010
Bi-directional Repeatability (± μm)11
Flatness (μm)1010
Straightness (μm)105
Pitch (arc-seconds)5050
Yaw (arc-seconds)5010
Orthogonality (arc-seconds)2020


  • Custom XY and Z travel lengths
  • Incremental or absolute linear encoders
  • Mounting hole configurations allow for mounting other Dover stages, such as the RTR rotary stage on the lower carriage, and KV and MMX stages on the upper carriages
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