Festo Pneumatic Roundline Cylinder 25mm Bore, 400mm Stroke, DSNU Series, Double Acting

The Festo DSNU-25-400-PPS-A is a roundline pneumatic cylinder designed for controlled linear motion in automated and industrial systems. With a 25 mm bore and a 400 mm stroke, it provides stable push-and-pull movement for applications that require accuracy, repeatability, and long service life. As a double-acting cylinder, it uses compressed air for both extension and retraction, providing better control than single-acting designs.

How It Benefits Users

The DSNU series is known for smooth operation and consistent force output. This model features adjustable pneumatic cushioning that helps reduce impact at the end of each stroke. That cushioning protects both the cylinder and surrounding components, especially in applications with frequent cycling.

• Double-acting operation for controlled movement.
• Smooth stroke behaviour with end-position cushioning.
• Stable performance over long operating cycles.
• Built to run continuously without needing constant adjustment.

Mechanical Design and Build

The roundline body design allows easy mounting in different orientations using standard accessories. Its compact profile makes it suitable for tight installations on machines, frames, and production lines. The piston rod and seals are designed to handle repetitive motion while maintaining air tightness and stroke accuracy. This design helps reduce air leakage and wear, thereby improving system efficiency.

Applicable Areas of the Festo 559293 Pneumatic Roundline Cylinder 400mm Stroke

It fits well into systems that require reliable linear motion without a complex setup.

• Automated assembly machines
• Material handling systems
• Packaging and sorting equipment
• Pick-and-place units
• Industrial tooling and fixtures

For more information please check the datasheets.