SST High-Speed Spiral Door - 1st Generation

Among high-speed doors, the SST High-Speed Spiral Door is revolutionary: Two door systems have been combined in a single design: The spiral door is a burglar-proof, weather-proof, high-speed exterior door to meet today’s demands. When the door laths are rolled up, they are separated by a spiral and never touch. This patented design feature combines consistently high speeds with above-average reliability. The low-wear door will remain attractive for a long time, and individual laths can be quickly and easily replaced when necessary. Even with more than 150,000 door cycles a year, routine maintenance is negligibly low.

SST meets all requirements

The SST high-speed door is an extremely fast, safe and reliable exterior door. The door panel consists of double wall aluminium laths, thermally separated profiles provide (on request) for the best in heat insulation. Any required light entry will be constructed as necessary from multi-clearview laths of acrylglas (SAN). An additional locking device guarantees a very high degree of security against burglary. The widest range of equipment and extensive accessories distinguish the high-speed spiral door as the model for the today’s door technology.

Space-Saving Solutions

The patented spiral (P 0531 320 B1) reduces space requirements considerably. It is fixed to the vertical frame and thus works independently of the building framework. For installations in very limited spaces, a special low lintel version, often used for parking garages, is also available. Therefore, an optimal adaptation to available space of the building can always be found.

Low-Wear Door panel

Power is transmitted through strap hinges with protected rollers on both sides. A connection shaft ensures synchronization. All laths are individually screwed to the strap hinge for free movement preventing transmission tension within the door panel (Patent P 0531 327 B1). Rubber sections link the laths together with a „clip“ technique, making them weather-resistant. This is why individual laths can be quickly and easily replaced when necessary.


Here electronics are the key: The microprocessor controller can be adapted to the door’s function and equipment. The opening speed of 1.5 m/sec opening and 0.75 m/sec for closing is factory pre-set, however, slower or faster speeds are also possible. The control panel is equipped with a membrane keyboard, an information and function display, and remote diagnosis.

Highest availability

The whole construction is designed in the smallest detail for the highest reliability, a long useful life and the least expenditure on maintenance. For example at the motor a maintenance free inductive sensor directly reports all door positions to the controller. All the components of the drive and the power transmission are designed for the heaviest constant employment. Therefore the door panel remains attractive for many years and even the seethrough sections permanently retain their clarity. High-speed spiral doors combine timeless aesthetics with individual economy.

Gentle Start

Gentle acceleration – high speed – gentle braking. These features are vital for long use. So that the drive elements move smoothly and without interruption, the motor does not start with full power. The frequency converter, produced in series, changes the number of revolutions through the frequency to deliver dephased 3 x 220/240 volts to the motor. Power requirement: 1 x 230 volts.

Door Safety

All spiral doors have a mechanical counterbalance: In case of a power failure, a hand lever activates the durable mechanical tension springs on both sides of the door frame which pull the door open. The force is transmitted directly to the shaft by strong straps. The door closing line is protected by the safety edge or the opto-electronic TLG system, which is completely integrated into both sides of the frame and produces an infrared light grid of 2.5 m maximum height.

Multiple application possibilities

High-speed spiral doors are always an intelligent solution. The entry + exit doors of an underground garage would be constructed in the low lintel version in view of the limited space. Air ventilation laths should also be provided instead of the clear view laths. Light units control the traffic. Similar solutions will also be individually created for car wash installations, airports, fire brigades, banks, insurance companies, air-conditioned areas… and many other types of application.


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