Clamps and Angle Brackets for 34 mm Rails

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XT34 34 mm Optical Rail Accessories

Rails	Clamps and Angle Brackets	Breadboard Mounting	Size Adapters

Rail Joiners	Rail Carriers	Mounting Platforms	Lens Tube Adapter

Features

Provides Stable and Rigid Mounting of 34 mm Rails and Components
Easy to Adjust and Position by Sliding
Clamp Design Permits Rails to be Dropped In and Tightened Into Place
Low-Profile Brackets Rotate by Fixed Angles in Three Dimensions

Thorlabs' clamps and brackets for 34 mm rails are fundamental building blocks of two- and three-dimensional rail constructions.

Clamps
Our clamps securely fasten two rails together and feature fixed and variable rotation options. They are designed with a wide opening that tightens shut around the dovetailed rail, allowing the rail to be added and removed without having to disturb existing components. The clamps can be slid into position and locked in place.

Brackets
Our rigid angle brackets provide rotation by fixed amounts and enable three-dimensional constructions. They are designed to be used in combination with the clamps.

Thorlabs offers a wide and growing complement of accessories for 34 mm rails, including clamps and angle brackets, breadboard mounts, rail carriers, mounting platforms, lens tube adapters, and rail joiners. Together with size adapters that incorporate 66 mm and 95 mm rails into an XT34 setup, these tools provide a complete family of rigid, versatile building blocks suited for virtually any optomechanical setup.

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Double Dovetail Clamps for 34 mm Rails

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The XT34C1 and XT34C2 Fasten Together Two XT34 Rails or a Single Rail and a Mounting Platform

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Item #	Qty	Description
XT34C2	1	Double Dovetail Clamp for 34 mm Rails, 30 mm Long
XT34D2-30	1	30 mm Long XT34 Platform with One 1/4" (M6) Counterbore
RSP1	1	Rotation Mount for Ø1" (25.4 mm) Optics, 8-32 Tap
PH2	1	Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 2"
TR3	1	Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 3"
XT34-200	1	34 mm Construction Rail, L = 200 mm

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Item #	Qty	Description
XT34C2	1	Double Dovetail Clamp for 34 mm Rails, 30 mm Long
XT34D2-30	1	30 mm Long XT34 Platform with One 1/4" (M6) Counterbore
RSP1/M	1	Rotation Mount for Ø1" (25.4 mm) Optics, M4 Tap
PH50/M	1	Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=50 mm
TR75/M	1	Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm
XT34-200	1	34 mm Construction Rail, L = 200 mm

XT34C2 Double Dovetail Clamp Holding an XT34D2-30 Mounting Platform and RSP1 Rotation Mount

Clamp Between Rails or Accessories
Orient Rails Parallel to Each Other
XT34C1: 15 mm Long Clamp
XT34C2: 30 mm Long Clamp

Our Double Dovetail Clamps for 34 mm Rails securely join XT34 rails and components in a parallel orientation. They are available in two lengths: 15 mm and 30 mm.

Using two XT34C1 clamps as a pair prevents torsional strains and keeps two rails parallel over the entire length spanned by the clamps. If a single-clamp solution is preferred, then we recommend the XT34C2, which provides additional surface contact. It is also perfectly sized to attach components on an XT34D2-30 mounting platform, as shown to the right.

Cross Clamp for 34 mm Rails

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XT34CC Cross Clamp with Two XT34 Rails

Compact Clamp Joins Two 34 mm Rails at Right Angles
Single-Screw Clamping Mechanism

The XT34CC Cross Clamp fastens two rails or accessories together at a 90° angle and closes using a single screw, making it easy to perform adjustments. In order to orient two rails such that they are not orthogonal, please see the XT34 Double Dovetail Rotation Clamp below.

Cross Bracket for 34 mm Rails

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Item #	Qty	Description
XT34CB	1	Cross Bracket for 34 mm Rails
XT34-200	1	34 mm Construction Rail, L = 200 mm
XT34C1	1	Double Dovetail Clamp for 34 mm Rails, 15 mm Long
XT34C2	1	Double Dovetail Clamp for 34 mm Rails, 30 mm Long
XT34DP-500	1	34 mm Double Dovetail Rail, L = 500 mm

90° Intersection Created by XT34CB Cross Bracket

Connect Two 34 mm Rails at 90°
Used with Dovetail Clamps

The XT34CB Cross Bracket creates an orthogonal intersection between two 34 mm rails and is typically used with dovetail clamps. It is ideal for situations when an XT34CC Cross Clamp is not available or desired.

Right-Angle Bracket for 34 mm Rails

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Item #	Qty	Description
XT34-200	1	34 mm Construction Rail, L = 200 mm
XT34DP-500	1	34 mm Double Dovetail Rail, L = 500 mm
XT34RA2	1	Right-Angle Bracket for 34 mm Rails
XT34C1	1	Double Dovetail Clamp for 34 mm Rails, 15 mm Long
XT34C2	1	Double Dovetail Clamp for 34 mm Rails, 30 mm Long

XT34RA2 Right-Angle Bracket Enables Vertical Construction

Orient 34 mm Rails at 90° in Three Dimensions
Combines Three Dovetails in One Bracket
Extremely Rigid Part is Machined from a Single Extrusion

The XT34RA2 Right-Angle Bracket features three dovetails that can be used simultaneously. The third dovetail, oriented at 45°, both rotates the rail and enables three-dimensional constructions from a single joint. The right-angle bracket is designed to be used with the double dovetail clamps shown above.

Double Dovetail Rotation Clamp for 34 mm Rails

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Two 34 mm Rails at Arbitrary Angles

Provides a Full 360° of Rotation
Create Complex Orientations Between Rails and Rail Systems

The XT34RD Double Dovetail Rotation Clamp provides continuous rotation of one rail with respect to another. For a simpler clamp that rotates a rail by 90°, please see the XT34CC Cross Clamp above.

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Clamps and Angle Brackets for 34 mm Rails

Features

Double Dovetail Clamps for 34 mm Rails

Cross Clamp for 34 mm Rails

Cross Bracket for 34 mm Rails

Right-Angle Bracket for 34 mm Rails

Double Dovetail Rotation Clamp for 34 mm Rails