Telescopic Beam Tubes: Spring Bellows

Applications

Telescopic spring bellows beam tubes are best suited for systems where the optical path needs to accommodate smooth, continuous motion at lower speeds—such as focus adjustment or controlled travel of a process head. Unlike rigid tubes, the bellows construction allows extension and contraction while keeping the beam fully enclosed.

This design provides several benefits across cutting, welding, drilling, and R&D environments:

• Maintains a sealed beam path to protect optics from dust, debris, and contamination.

• Allows controlled motion for Z-axis and other low-speed adjustments without exposing the beam.

• Supports flexible layouts where component spacing may change during operation.

By combining enclosure, adjustability, and support for continuous movement, spring bellows tubes offer a practical solution for systems that require both cleanliness and flexibility.

Selecting a Part Number

Selecting the right telescopic spring bellows beam tube involves four main considerations:

Step 1: Aperture Size
Choose the clear aperture that matches the beam size in your system. We recommend 1.5x your beam diameter.

Step 2: Mounting Style
Determine the connection type for each end of the tube. Mounting styles include threaded male, threaded female, and bolt circle configurations, allowing integration with a wide range of couplers, adaptors, and mounts.

Step 3: Length Range
Select the appropriate extension length based on the distance between optical components. Standard ranges cover both compact and extended setups, with custom lengths available if your system requires a unique span.

Step 4: Orientation
Specify whether the tube will be mounted in a vertical or horizontal orientation. This ensures the bellows operate smoothly and maintain proper alignment within your beam delivery system.