夹紧气缸直接通过气动夹紧元件或通过运动学设计以夹持或夹紧工件。夹紧元件处于非活动状态时从工作区摆出。借助运动学设计，只需微量能耗就可实现超高夹持力。在夹紧气缸领域，Festo 为市场提供了膜片式夹紧气缸、直线/回转式夹紧气缸和铰链式气缸。
膜片式夹紧气缸是一种行程较短、具有超扁平结构的膜片驱动器，适用于各种卡夹和夹紧任务。当其他夹紧气缸达到极限时，膜片式夹紧气缸仍有诸多“用武之地”：由于采用扁平结构，因此可用于狭窄间隙等位置。其夹紧力最大可达到 1640 N。膜片式夹紧气缸采用圆形和细长结构，不但能胜任扁平夹紧任务，还能完成直线导向型夹紧任务。由于采用密封设计，膜片式夹紧气缸可在尘土飞扬的恶劣环境中使用。
我们的产品系列包括了膜片式夹紧气缸 EV，一种带膜片、无活塞杆的短款气缸。膜片式夹紧气缸 EV 是一款单作用气缸，具有复位功能并采用密封设计。
With linear/swivel clamps, linear and swivel movements can be combined. This means that tools can be inserted and removed even beyond the clamping range. There are clamping tools for a number of applications; they reliably clamp all kinds of workpieces, from wood to sheet metal and even printed circuit boards. Linear/swivel clamps generate clamping forces of up to 1,600 N and clamping strokes of up to 50 mm. They can also be used in welding applications.
Festo currently has linear/swivel clamp CLR, which combines swivelling and clamping in a single work step. The swivel direction is adjustable, so the CLR can be adapted to individual conditions. The CLR is also available with a clamping finger as an accessory as well as with dust and welding spatter protection.
Hinge cylinders are special clamping cylinders that are characterised by a rod clevis at the end of the piston rod and a hinged fork at the bearing cap. This simplifies mounting in clamping devices. An option with clamping unit can also prevent the piston rod from slipping in unpressurised conditions. Hinge cylinders generate clamping forces of up to 3016 N and are particularly suitable for clamping components in welding processes. They clamp and hold components extremely securely and reliably.
The Festo hinge cylinder DW with integrated restrictors and end-position cushioning is ideal for clamping components in welding processes. The hinged fork on the bearing cap makes the DW very easy to mount. In the Asian region, the DW is the automotive standard for body-in-white production.