Collection:Bellow Cylinders

Bellow cylinders function both as driving and pneumatic spring components, offering a versatile solution for various applications. Unlike traditional pneumatic actuators, bellows cylinders do not have a piston rod. Instead, they feature a simple design consisting of two metal plates with a ribbed rubber bellows. This design allows for the generation of large forces directly by applying pressure to the large surface area of the end faces.

A significant advantage of bellow cylinders is their low installation height compared to conventional cylinders, making them ideal for applications with space constraints. Additionally, their ease of movement allows for larger axis offsets and angular rotations of up to 20°, providing greater flexibility in system design. The absence of the stick-slip effect, which is common in traditional cylinders, ensures smooth and consistent motion.

Bellow cylinders do not require a spring return, as the return is typically achieved by the weight of the load. For applications requiring larger strokes, double bellows are available. These cylinders can be used with various media, including compressed air, gases, and liquids, provided the properties of the rubber are suitable for the specific medium.

Festo bellows cylinders are available in diameters ranging from 80 mm to 385 mm, with strokes of up to 230 mm. They can handle a maximum load bearing capacity of 70 kN at 8 bar, making them suitable for a wide range of pneumatic actuator applications. When selecting a bellow cylinder, consider the required diameter, stroke length, and load capacity to ensure optimal performance for your specific needs.