In the past, very few industries ran production in cleanrooms. Today, however, cleanroom production has extended beyond electronics and photovoltaic manufacturing, medical technology and the semiconductor industry. Numerous other industrial sectors also need components that are suitable for use in cleanrooms. Click here to find the most important information.
Which products does Festo offer for use in the cleanroom?
You can use all cylinders, valves, grippers and drives, all handling systems, vacuum systems and compressed air systems, sensors, filters, regulators and fittings from more than 80 product ranges from Festo in ISO class 7 cleanroom environments. Most are suitable for use in classes 6 and 5, and many can even be used in class 4 environments. We can also provide customised special solutions.
Which Festo products are suitable for use in the cleanroom?
Festo supplies products suited to all cleanroom classes:
many of our series products can be used with ISO classes 4 and 9. As a result, you get proven quality and fast delivery at an affordable price.
Specialist solutions are available for ISO classes 1 to 3.
Cleanroom classes 7-9: the entire product range from Festo
Almost all Festo products can be used in a cleanroom of class 7 or higher.
Cleanroom classes 4 - 6: specially tested series products for ISO classes 4 - 6
A selection of our series products are tested for use in the cleanroom. Many of our products are compatible with ISO classes 4 - 6.
Cleanroom classes 1 - 3: products produced specially for ISO classes 1 - 3
These products are manufactured to customer requirements, then transferred to series production.
- How does Festo qualify cleanroom products?
- How are cleanroom products classified?
- How do I find suitable cleanroom products?
- What should be taken into account when using cleanroom products?
The most important criterion is that the products used comply with the specified cleanroom class during operation. That’s what really counts. All cleanroom products from Festo are certified in accordance with ISO 14644-14. However, the cleanroom class depends on where in the application the product is used. This sounds complicated but is actually good news.
Cleanroom class according to location of use
The fact that the cleanroom compatibility of operating equipment always depends on where it’s used means that you don’t have to ensure stricter cleanliness everywhere. Cleanrooms are not homogenous zones. Maybe you need ISO 14644-14 class 5 directly above the workpiece, while class 7 is enough for the rest of the workflow. In other words, standard products from Festo fulfil the requirements in most cases.
The same positive answer also applies to cleanroom compatibility for packaging. Technically correct cleanroom packaging is possible with Festo, but it’s seldom really necessary and represents a cost factor that you can often do away with. Our experience shows that most components can be assembled and prepared for shipping in a normal environment. Final cleaning takes place directly on-site.
Don’t hesitate to get in touch with us if you have any doubts. For example, if the component needs to fulfil a safety function or if your ambient conditions differ from the values listed in the data sheet.
Tips for cleanroom design
End position switch
When wiring the end position switches of double-acting cylinders, you need to make sure that you can’t move the cables and that they don’t rub against each other or any other equipment.
You should avoid high-force impacts in the end position. That's what cylinder cushioning is for. Adjustable and self-adjusting cushioning variants PPV and PPS significantly reduce particle emissions.
It’s better not to use single-acting cylinders because particles are discharged into the atmosphere via the exhaust. The piston rod seal is also considerably thicker in double-acting cylinders.
The cylinder fittings are leak-free when correctly assembled . The piston rod seal, on the other hand, is a source of particle contamination due to its design. A protective bellows or vacuum exhaust can therefore be helpful .
You should avoid using rod eyes , rod clevises, flexible couplings and swivel flanges  since they generate abraded particles. Make sure that the tubing doesn’t move or rub against anything.
In the case of vacuum applications, its' advisable to use our rotary drives. This is because rotary motion is easier to seal than linear motion, and is therefore more suitable.
Fine particulates and contamination should be filtered out in several stages during compressed air preparation. We recommend using a filter cascade with 40 , 5  and 1 µm  stages in cleanrooms.
The pilot air for valves is hardly ever of any importance . In contrast, exhaust air must always be ducted and should not be discharged into the cleanroom via silencers . When correctly mounted, fittings are leak-free .
Spindle axes are better suited for cleanrooms than toothed belt axes; they cause less abrasion and discharge fewer particles. Furthermore, the spindles are greased and thus the abraded particles stick to them.
Standard energy chains are critical in cleanrooms. Although there are special energy chains for cleanrooms, it’s generally better to ensure during the design phase that the handling unit is placed, where possible, underneath the workpiece.
And last but not least: when it comes to cleanroom compatibility at Festo, we always assume that closed, monitored compressed air systems are being used, without leakages and without particles being discharged into the environment by the exhaust air.
It’s important to note that our components are not suitable for conveying (with tubing and fittings) or switching (using valves) purified air! Our fine and micro filters are the only exception, since they generate highly purified air depending on the grade of filtration.