Festo piston rod cylinders are pneumatic drives for executing linear movements. They are available as round cylinders, profile cylinders, compact cylinders, short-stroke cylinders, flat cylinders, miniature cylinders, screw-in or stainless-steel cylinders; and, depending on the piston diameter, they can provide thrust forces of up to 50 kN at 6 bar. Selected types in accordance with the ATEX directive are also suitable for explosive atmospheres or are made of corrosion-resistant stainless steel and therefore particularly easy to clean.
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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.
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 cylinder sensors are mounted: they are securely inserted in the slot on the profile tube, while on cylinders with tie rods the cylinder sensors are attached to a tie rod using a separate mounting kit.
Compact cylinders are pneumatic cylinders with an installation length that is extremely compact in relation to the stroke length. They are typically used when space is extremely limited and the requirements for lateral loads are low. The compact cylinders belong to the group of directly mounted 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 characterised – as the name suggests – by a particularly flat design with an oval piston that is protected against rotation.
Compact pneumatic cylinders, short-stroke and flat 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 directly in the system using a threaded hole and can be operated as single-acting. There is no need for separate accessories to mount these piston rod cylinders and to connect the air supply. This creates an extremely space-saving layout.
这类气缸是带附加夹紧单元的活塞杆气缸，该夹紧单元用于夹紧活塞杆。 当工作压力低于最低设定值时，摩擦夹紧机构即被激活。根据具体型号而定，该机构可带或不带回转间隙。 带夹紧机构的气缸用于静态夹持。 用于动态制动以及安全相关控制系统中时，必须配备附有相关测试认证的保持制动器。
不锈钢气缸具有出色的耐腐蚀性能，即便在恶劣的腐蚀性工况下也能胜任。 这一特性主要归功于对 1.4301 和 1.4401 高品质不锈钢材料的应用。 经过实践验证的高合金不锈钢，可有效防止化学应力以及清洁剂和消毒剂可能造成的损坏。
活塞杆气缸始终配备有一根带驱动活塞的活塞杆，其运动由压缩空气控制。 作用在活塞上的能量随后通过活塞杆传递给待移动的部件。 带活塞杆的气缸分为双作用和单作用两种类型。
带活塞杆的单作用气缸只有一个供气口。 压缩空气通过该供气口进入气缸，从而使活塞向一个方向移动。 当气缸再次排气时，活塞在弹簧的作用下返回初始位置。
双作用气缸则设有两个供气口，仅能通过压缩空气驱动。 当压缩空气输送到任一供气口时，气缸就会推进或返回。
活塞杆气缸的运动质量不仅取决于气缸规格，也离不开阀流量控制的支持。 基于速度控制阀的气动解决方案（通常为气动节流阀或气动节流装置）能实现在设备端直接对推进与返回速度进行现场调节。 它的运作方式相当于简单的气缸速度控制器，且无需改变机械结构。
为确认行程已完成并保证顺序动作的可重复性，建议加装气缸传感器作为气缸的限位开关。 这些气缸终终端位置置传感器常用作气缸的限位开关，通常利用气缸用舌簧开关来检测活塞磁铁。 这一特性使其成为可靠的气缸行程终端位置传感器，同时也是适用于日常自动化场景的实用型气缸限位开关。