Pneumatic cylinders are used for drive tasks. But drive tasks cannot always be carried out using a standard cylinder. Especially for complex drive tasks with demanding, individual requirements, special pneumatic cylinders are often needed.
With a selection of products from Festo such as tandem cylinders, high-force cylinders or multi-position cylinders, you will always find the right product for every drive task.
A standard pneumatic cylinder consists of many components (e.g. piston, piston rod, cylinder barrel) that are designed and produced right from the start for a wide range of applications and possible uses. Pneumatic cylinders can, for example, be double-acting or single-acting or can also have different types of end-position cushioning.
But why do you need different designs of pneumatic cylinders? Special pneumatic cylinders are used when the requirements for the shape or size of a cylinder for a drive are very special. It is therefore the shape or size of a special cylinder that usually differs from that of a standard cylinder. A few deviations are enough to turn a standard pneumatic cylinder into a special pneumatic cylinder.
Pneumatic multi-position drives are available with two different functional principles. According to the first principle, pneumatic multi-position drives consist of two separate cylinders that are connected using a kit and have piston rods that extend in opposite directions. This means that, depending on the actuation and stroke configuration, this type of cylinder can assume up to four positions. According to the second principle, multi-position cylinders consist of two to five cylinders connected in series with different stroke lengths. With this cylinder type, only one piston rod is visible, which moves to different positions in one direction.
A high-force cylinder is a cylinder design that is characterised by pneumatic compact cylinders connected in series. By connecting a maximum of four pistons in series, the force of the cylinder is increased accordingly. The resulting force is transferred to the external piston rods, where it is ready to be used. The resulting force is applied over the entire stroke, up to a maximum of 5 mm before the end position is reached. The cylinder of the first stage is always used for position sensing, because it performs the visible stroke.
These are two identical profile barrel cylinders type DNC connected in series to double the thrust force in both directions of movement. By using cylinders type DNC, the mounting interfaces comply with standard ISO 15552. This means that the mounting accessories from the range of piston rod cylinders DSBx and DNC can be used as well as piston rod accessories. Both profile cylinders of the tandem have magnetic pistons and can be sensed using cylinder sensors. The proximity switches can be easily and securely mounted in one of the sensor slots without any additional accessories. The energy can be reliably absorbed by the adjustable pneumatic cushioning. The DNCT is available with a freely selectable stroke length of max. 500 mm either in a normal version or a heat-resistant version for a maximum ambient temperature of up to 120 °C. Other variants are available on request.