The Ensolma Pneumatic Actuator - Unique in the Industry

For sliding hermetic doors and for the radiation-protection doors both types Ensolma uses its own pneumatic actuator system - the "Ensolma-Pneumatic-Actuator" (ePA) - because it offers a number of advantages:

Reliability

The pneumatic drive requires significantly less components than comparable electric drive. This means more reliability and a reduced risk of failure.

For example, in the hermetic sliding doors the door leaf has a sophisticated movement when closing. It is dropped to the floor and at the same time pressed against the wall, sealing the entire perimeter of the door opening. We call this Ensolma's 'dancing technology'. The combined, almost dancing movement is created by pneumatic cylinders that ensure maximum sealing efficiency.

Extended Service Life

Our customised and in-house developed pneumatic actuators have proven their reliability over decades. 

The pneumatic components used in industrial applications are highly reliable and have a high MTBF of 1,000,000 cycles. 

Under normal operating conditions they guarantee reliable operation for 10-20 years.

Resistant to Disinfectants and Moisture

The sliding doors use in the environments, where liquid disinfectants are used extensively, like operating theaters, the electric control unit should be relocated to a dry area. The pneumatic drive contains no electrical components or circuits, making it
resistant to liquid droplets.

Silent Operation

With a properly installed silencer system on the pneumatic cylinder, the door operates extremely quietly.

Fail-safe 

In the event of a power failure, the door remails operational. The pneumatic drive ensures fail-safe operation, allowing for at least 3-4 opening and closing cycles for the heavy doors, and up to 15 cycles for the hermetic doors, depending on the door's weight. 

No microparticle emissions 

Electric drives usually use rubber or polyurethane composite belts for power transmission. This causes abrasion. The use of pneumatic drives, which works on the basis of cylinders, eliminates this problem. This is an important factor in avoiding microparticles in the air.

Handles 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, though this is not the upper limit.

Holistic Engineering Approach

Ensolma doors benefit from a comprehensive technical design philosophy. When selecting a drive type, our engineers prioritize comfort, safety, and reliability in door system operation.
For example, a radiation protection door with a weight up to 2,000 kg is equipped with an automatic threshold as a standard. In such cases, the most convenient solution is a pneumatic drive that controls door movement and the automatic threshold.
For radiation-shielding sliding doors with thin lead layers (2-3 mm), either pneumatic or electric drives can be used. However, for lead thicknesses of 5 mm or more, we recommend pneumatic drives.
Ensolma uses pneumatic drives for radiation protection doors both types and for the hermetic sliding doors, ensuring optimal performance and reliability.