Piston rod cylinders

Piston rod cylinders

Festo piston rod cylinders are pneumatic drives for executing linear movements. Whether as round cylinder, profile cylinder, compact cylinder, short-stroke cylinder, flat cylinder, miniature cylinder, screw-in or stainless-steel cylinder: depending on the piston diameter, thrust forces of up to 50 kN at 6 bar are possible. Selected types in accordance with the ATEX directive are additionally suitable for explosive atmospheres or are made of corrosion-resistant stainless steel and therefore particularly easy to clean.

You can find more products in our category: Pneumatic actuators

Round cylinders

Thanks to their round design, round cylinders can even be installed in tight spaces. What all round cylinders have in common is excellent operational performance, a long service life, and quick and easy installation. The piston rod cylinders are available both as double-acting and single-acting actuators, as well as pneumatic cylinders according to standard ISO 6432.

Round cylinders

Tie rod cylinders

Profile cylinders and tie rod cylinders have identical mounting interfaces and the same technical data, and both have dimensions that conform to the ISO 15552 standard. However, these linear drives differ above all in how the proximity switches are mounted: they are securely inserted in the slot on the profile tube, while on cylinders with tie rods the proximity switches are attached to a tie rod using a separate mounting kit.

Tie rod cylinders

Compact, short-stroke and flat cylinders

Compact cylinders are pneumatic cylinders with an installation length that is extremely compact in relation to the stroke length. Compact cylinders are typically used when space is extremely limited and the requirements on lateral loads are low. The compact cylinders belong to the group of direct mounting cylinders and are usually installed without any specific mounting accessories. Short-stroke cylinders start from a stroke of 2.5 mm and flat cylinders are characterized – as the name suggests – by a particularly flat design with an anti-rotation oval piston.

Compact, short-stroke, and flat cylinders

Multimount and cartridge cylinders

Multimount cylinders are cylinders that can be mounted from one or more sides without additional mounting attachments (except for screws). Cartridge cylinders can be installed and operated in a single-acting way in a threaded hole directly in the system. Separate accessories for mounting these piston rod cylinders and connecting the air supply are not required. This enables an extremely space-saving arrangement.

Cartridge cylinders and multimount cylinders

Cylinders with clamping unit

These are piston rod cylinders with an additional clamping unit for clamping the piston rod. Clamping is frictional when the operating pressure falls below a minimum value and – depending on the type – can be with or without backlash. Cylinders with a clamping mechanism are used for static holding. A holding brake with a relevant test certificate is required for dynamic braking and use in safety-related controllers.

Cylinders with clamping unit

Stainless-steel cylinders

Stainless-steel cylinders are characterized by their corrosion resistance, even within an aggressive environment. The high-quality types of stainless steel 1.4301 and 1.4401 are used in particular. The high-alloy types of stainless steel that have been proven in practice provide protection against chemical strain and damage that may be caused by cleaning agents and disinfectants.

Stainless steel air cylinders

Mode of operation of piston rod cylinders

In a piston rod cylinder, there is always a piston rod with an drive piston, the movement of which is controlled by compressed air. The energy applied to the piston is then transferred by the piston rod to the parts to be moved. Cylinders with piston rod are available as double-acting and single-acting piston rod cylinders.

Single-acting cylinder with piston rod has only one supply port. Compressed air is introduced through the port, causing the piston to move in one direction. When the cylinder releases the air again, the piston returns to its initial position with the help of a spring.

Double-acting cylinders, on the other hand, have two supply ports and are controlled exclusively with compressed air. The compressed air causes and controls the extension and retraction by supplying compressed air to either one or the other port.