3" Rails for Quick-Connect Stages

  • Dovetail Rails Designed for Extended Linear Positioning
  • 150 mm, 250 mm, and 500 mm Stock Lengths
  • Custom Lengths up to 750 mm




1/4" (M6) Counterbored Holes and Slots for Breadboard Mounting

End View





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XRR1 Rotation Stage Mounted on XR25DR Baseplate for Coarse Linear Positioning

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When mounted on a rail, the stage's translation axis is perpendicular to the adjustment axis of the rail.


  • Outer Dovetail Compatible with 3" XR Quick Connect Stages
  • Allows for Coarse Adjustment of Mounted Components
  • 150 mm, 250 mm, and 500 mm Lengths Available
  • Counterbored 1/4" (M6) Mounting Slots Compatible with Imperial and Metric Breadboards
  • Additional Dovetail Compatible with 34 mm Rail Accessories

These 3" dovetail rails provide a convenient way to mount our XR series stages and accessories on a breadboard or optical table. All rails feature an outer male dovetail for mounting the translation stage, as shown in the image to the right, and an inner 34 mm male dovetail for mounting other clamps and platforms.

A mounted component can be translated across the entire length of the rail. The XR25DR2, XR25DR, and the XR25DR3 come in lengths of 150 mm, 250 mm, and 500 mm, respectively. For these stages, travel along the rail would be in the direction orthogonal to the stage's translation axis. The graduated scale engraved along one edge of each rail makes it easy to repeat adjustments between multiple locations on the rail; the XR25-RC3 rail carriers can be used to mark a specific location on the rail before moving the stage.

The rails feature 1" long, 1/4" (M6) counterbored mounting slots and a central 1/4" (M6) counterbored mounting hole that allow the rail to be used with both imperial and metric breadboard hole patterns. Standard cap screws can be used with this rail without interrupting the translation of mounted components.

For our complete selection of 3" dovetail components, see the Quick-Connect Stages tab.

Posted Comments:
user  (posted 2023-04-28 16:14:56.38)
Dear Sir/ma'am, Can two rails (XR25DR3) be connected back to back without interrupting the motion of the carrier plate? Regards,
jdelia  (posted 2023-05-08 01:37:24.0)
Thank you for contacting Thorlabs. We do suggest mounting two of these rails back-to-back as it should be relatively seamless. I have contacted you directly to discuss whether this procedure may work for your application.

Build Multi-Axis Configurations

Vertical Rotation Translation Stage
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Z-axis assembly kits allow stages to be mounted in vertical orientations.

Quick-Connect Dovetails

Quick Connect Translation Stages
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The female dovetails on the bottom of one stage mate with the male dovetails on another.

XR & XRN Dovetail Stages and Accessories

Our XR series manual stages feature quick-connect dovetails that allow for the construction of multi-axis systems without the need for additional hardware. The common dovetail feature with a single locking clamp makes it quick and simple to swap parts in and out while preserving excellent orthogonality.

Our selection of products with a quick-connect dovetail includes:

  • Linear Translation Stages:
    • Stackable 1-Axis Stages
    • Pre-Assembled 2- and 3-Axis Configurations
  • Rotational Stages:
    • 360° Flat Rotation
    • Tip/Tilt Goniometers
  • Adapters:
    • Z-Axis Assembly Kits
    • Parallel and Perpendicular Mounting between 2" and 3" Dovetails
  • Rail Accessories:
    • Stationary Mounting Platforms
    • Rail Component Positioners
  • Base Plates and Rails

Most items are available in compact (2" dovetail) and full-size (3" dovetail) varieties. Adapters are available to interface between the two sizes. See the tables below for all available options.

Linear Translation Stages
Click Photo to Enlarge XRN Stages XR Stages XRN Stages
Items Compact 25 mm Stages Compact 9 mm Vertical Stage Full-Size 25 mm Stages Full-Size 50 mm Stages 14 mm Vertical Stage
Motion X, Y, Z, XY, XZ, YZ, XYZ Z (Vertical) X, Y, Z, XY, XZ, YZ, XYZ X, Y, Z, XY, XZ, YZ, XYZ Z (Vertical)
Quick-Connect Dovetail 2" Dovetail 3" Dovetail
Additional Features info info info info info


Rotation and Goniometric Stages
Click Photo to Enlarge
Items Compact Rotation Stage Compact Goniometric Stages Full-Size Rotation Stage
Motion 360° Rotation ±8° Tip/Tilt About Fixed Point Above Stage 360° Rotation
Quick-Connect Dovetail 2" Dovetail 3" Dovetail
Additional Features info info info


Dovetail Accessories
Mounting Platforms XRN Platforms XR Platforms
2" Mounting Platforms 3" Mounting Platforms
Rail Positioners Rail Positioner
2" Rail Positioners 3" Rail Positioners

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
XR25DR2 Support Documentation
XR25DR2Customer Inspired! 3" Dovetail Rail, 150 mm Long
XR25DR Support Documentation
XR25DR3" Dovetail Rail, 250 mm Long
XR25DR3 Support Documentation
XR25DR3Customer Inspired! 3" Dovetail Rail, 500 mm Long
7-10 Days