氣缸是使用壓縮空氣進行運動的元件，這就是它們也被稱為氣壓缸的原因。氣缸對於許多應用領域來說是一種特別經濟高效的解決方案，即使在極端嚴苛的環境條件下也是如此，並且非常易於調試。介於 10 mm/s 至 3 m/s 之間的速度均可達成。由於空氣的可壓縮性，氣缸堅固而靈活，這也使它們能夠抵抗高外力。
氣缸在自動化技術/工廠自動化中有許多應用。氣動驅動器的典型應用領域有夾緊、提升、埋頭鑽孔、推動、拉動、進給、車削、抓取、夾緊和保持、連接、停止、沖壓、壓花和許多其他應用。
Festo 的氣缸範圍包括活塞桿和無桿氣缸（直線驅動器）、擺動氣缸、倍力氣缸、多位置氣缸和阻擋氣缸，以及夾緊氣缸、具直線導軌的氣缸以及氣囊式和膜片式氣缸。另外，我們也提供許多標準氣缸，具有標準化的尺寸和安裝介面。符合特定標準的氣缸具有相同的尺寸。圓形結構 (ISO 6432)、精巧型結構 (ISO 21287) 的活塞桿氣缸，以及型材氣缸和拉桿式氣缸 (ISO 15552) 都設有標準。
Festo 活塞桿氣缸是執行直線運動的氣動驅動器。施加到活塞上的能量透過活塞桿傳遞到要移動的部件上。活塞桿氣缸有圓形氣缸、型材氣缸、精巧型氣缸、短行程氣缸、扁平型氣缸、微型氣缸、插裝式氣缸或不鏽鋼氣缸等可選。
顧名思義，無桿氣缸是沒有活塞桿的氣缸。但即使沒有活塞桿，它們也能執行直線運動，這就是它們也被稱為直線驅動器的原因。無桿氣缸主要用於行程較長的應用中，例如做為多軸龍門的基本驅動器或用於進給任務。
Festo 的擺動氣缸可達成擺角高達 270° 的旋轉運動。葉片式擺動氣缸和齒輪齒條式擺動氣缸通常都能達成最高精度，同時也能提供出色的性能和強大的多功能性。因此，我們的氣動驅動器廣泛應用於各行各業的工廠自動化。
倍力氣缸是兩個相同的型材筒氣缸串聯在一起，使兩個運動方向的推力加倍。倍力氣缸是一種氣缸設計，其特徵是精巧型氣缸串聯在一起。多位置氣缸有兩個版本可選：兩個獨立氣缸的版本和兩到五個氣缸串聯的版本。
Festo 導向氣缸 — 具導向桿和直線導軌的驅動器 — 屬於氣動驅動器，是工業自動化的「主力」之一。它們應用廣泛，例如用於提升、下壓、拉動、推動、夾緊、停止、保持、切割、分離等等。這兩種類型的導向氣缸結合了直線運動和導向運動的優點，並且由於其極高的穩定性而脫穎而出。
藉由其輸送分離器，Festo 在全球提供抓取技術解決方案。輸送分離器簡化了工件的輸送過程，只要連續的工件流必須分離並單獨轉移到下游設備，就可以使用輸送分離器。阻擋氣缸是用於在機器或運輸系統的工件托盤中擋停運動的氣缸，可選具備或不具備無緩衝。具有緩衝功能的阻擋氣缸，可在運輸系統上停止高達約 800 kg 的負載。
Bellows and diaphragm actuators with their special characteristics are in a class of their own in the world of pneumatics. For example, they have no stick-slip effect. They can be used as drive or pneumatic spring elements in a wide range of applications.
Pneumatic rotary indexing tables can be used to carry out continuous rotary movements. Rotary indexing tables are used, for example, in assembly applications. A variable direction of rotation and freely selectable indexing enable a wide range of applications.
Shock absorbers absorb the energy of a moving drive. The movement of the drive piston is brought to a standstill by rubber elements and/or hydraulically. The relatively gentle stopping before the end position prevents a strong impact as well as a spring-back; it also protects the drive and the machine parts from wear or irreparable damage.
The attachments and accessories for pneumatic cylinders offered by Festo include mounting elements for drives and sensors, piston rod attachments, linear guides, accessories for direct valve mounting, clamping elements, freewheel units, accessories for cushioning elements and drive-specific accessories.
In a pneumatic cylinder, the compressed air is used to exert force on a cylinder piston in order move it in a specific direction. The movement of the piston is transferred to the parts to be moved by a piston rod or a frictional connection. A pneumatic cylinder is a drive operated with compressed air usually up to a maximum of 12 bar in order to generate linear or rotary motion. A distinction should be made between single-acting and double-acting cylinders (work is performed only in one direction or in both directions).
A single-acting pneumatic cylinder only has one compressed air connection. The incoming compressed air moves the piston in one direction, and the cylinder force is built up in this direction. If the piston needs to return to its initial position, the air is simply expelled from the cylinder. The mechanical spring pushes the piston back to its initial position. This part has a ventilation/exhaust hole so that no excess or low pressure is generated through the piston movement in the second cylinder chamber.
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The double-acting cylinder requires compressed air for every direction of movement. On this type of cylinder, the force in both the advancing and retracting direction is built up using compressed air. The simplest way of actuating a double-acting cylinder is by using a 5/2-way valve.
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