The ensolma pneumatic actuator - unique in industry

ensolma mainly uses its own pneumatic actuator - the "ensolma-Pneumatic-Actuator" (ePA) - successfully for sliding doors because it offers a number of advantages:

The pneumatic actuator requires far fewer components than comparable electric actuators. Fewer components mean more reliability and less risk of failure. When used in cleanrooms, the sliding door leaf moves back and forth in both the closing and sealing phases. We call this ensolma dancing technology. A positive, almost dancing movement is created by pneumatic cylinders, resulting in maximum sealing. 

Longer service life
Our self-developed drives have already proven themselves over decades. Statistically, the elements as a whole fail after about one million cycles. Thus, under normal operating conditions of the doors, a failure of the pneumatic drive elements can be expected after 50 years of operation at the earliest.  

Resistant to disinfectants and moisture
When pneumatically operated sliding doors are used, for example in operating rooms where liquid disinfectant solutions are abundant, the electrical control unit can be relocated to a dry area. As a result, no electrical devices or circuits are used in the pneumatic drive of the door unit. This pneumatic actuator is therefore resistant to liquid droplets. 

With a properly installed silencer system of the pneumatic cylinder, the door leaf is virtually silent.

In the event of a power failure, the door can continue to be used. The pneumatic actuator ensures fail-safe operation in the event of a sudden power failure and guarantees at least 3-4 opening/closing cycles, up to 7 depending on the weight of the door leaf. 

No emission of microparticles
Electric drives are usually made by means of belt transmission made of rubber or polyurethane composites. This causes abrasion. With the ensomla pneumatic actuator, this is eliminated due to the piston technology, which is an important factor in avoiding airborne microparticles. 

Heavy loads
The pneumatic drive is especially advantageous for heavy sliding door constructions. The maximum weight of a door manufactured by our engineers so far is 53 tons, but this is not the limit.
An important advantage of ensolma doors is the holistic technical approach. When choosing the type of drive, our engineers are primarily guided by comfort, safety and reliability in the operation of the door system.
For example, a door weighing up to 2,000 kg is equipped with an automatic threshold as standard. In this case, the most convenient solution is to use a pneumatic actuator that controls both the door movement and the automatic threshold.
If the radiation-proof sliding door contains a small layer of lead (2-3 mm), both pneumatic and electric drives can be used. For lead thicknesses of 5 mm or more, we recommend using a pneumatic drive.
For radiation shield doors, ensolma uses pneumatic drives in 90% of cases.