Low-profile Two-axis, Positioning with Clear Aperture

The Dover OFS™ series inverted microscope XY stage combines low-profile, two-axis positioning with a clear aperture, allowing it to be used for applications requiring transmitted light, cable, or pneumatic access through the bottom.


Inverted Microscope XY Stage – OFS

wdt_ID Base Model OFS-4040 OFS-6060 OFS-8080 OFS-1010
1 Travel (mm) 50x50 100x100 150x150 200x200
2 Travel (in) 2 x 2 4 x 4 6 x 6 8 x 8
3 Accuracy (μm TIR) Commercial Grade 45 65 75 80
4 Bi-directional Repeatability (± μm) Commercial Grade 5 5 5 5
8 Accuracy (μm TIR) Precision Grade 15 20 20 20
9 Bi-directional Repeatability (± μm) Precision Grade 2.5 2.5 2.5 2.5
10 Load Capacity (kg) 2 5 5 5
11 Flatness & Straightness (μm TIR) 5 10 15 20
12 Total Mass (kg) 2 3 5 8

Print Datasheet


The OFS™ series has orthogonality “machined-in” by the three-piece construction of these XY stages that employ ball ways. Both motors are attached to the center section so that they both move with the lower axis and the cabling only flexes in one direction of travel. The 1.5-inch-by-1.5-inch clear aperture allows OFS™ series tables to be used in applications requiring transmitted light, cable or pneumatic access through the bottom, or two-sided access to the user’s part. The use of side-mounted lead screws with spring-loaded friction nuts driven by 17-frame motors achieves a stage body thickness of only 1 inch. The motors include rear-shaft mounted knobs for manual control, and locking motor and limit/encoder connectors allow convenient attachment of cabling.

Design Features

  • Clear aperture for two-sided access
  • Large 42 millimeter unobstructed opening


  • Motor options available: stepper motors or servo motors
  • Feedback options available: rotary encoder, linear encoder with analog or digital (1 um or 0.1 um resolution are standard, other resolutions available upon request)
  • Download the datasheet for this linear motion XY stage for additional technical details


The Dover OFS™ inverted microscope XY stage has been integrated with microscopes to allow backlighting of a sample from below.



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