NBS Source
K21 Two Wing Automatic Revolving Door


Ideal for airports, train stations, hospitals, shopping centres and hotels.


Two wing automatic revolving door including an integrated automatic sliding door type record STA 20 in the rotating centrepiece along with two show-cases with lockable access leaves. The canopy structure is made from a solid and strong steel structure including thermal insulation and clad in aluminium plates along the pelmet and closed with a standard dust cover. The ceiling underside is made from special aluminium cassettes with invisible fixing that offer a solid and perfectly flush view.

All safety features are state-of-the-art and include the unique 'roll back safety leaf' at the rotating front leading edge that offers the highest safety without any comparison.


  • Two wing revolving doors provide spacious compartments.
  • Unhindered access even for wheelchair users with slow-down push buttons for reduced speed.
  • Climate control (temperature, air condition wind draughts) which reduces costs.
  • Includes an integrated sliding door that can be used independently.


Ideal for airports, train stations, hospitals, shopping centres and hotels.

General information

Uniclass 2015

Pr_30_59_24_04 Automatic revolving doorsetsPrimary


L20/495 Automatic revolving doors

L20/500 Manual revolving doors

Specification data - Automatic revolving doorsets

Product Reference

K21 Two Wing Automatic Revolving Door

Size (inside x outside)

3600 x 3758 mm

4200 x 4358 mm

4800 x 4958 mm

5400 x 5558 mm


2100–3000 mm; insert requirements.

Drum wall construction



Solid panel

Drum finish

1.4301 stainless steel (304)

1.4401 stainless steel (316)




RAL powder coated

Insert requirements.


Low-iron (white glass)


Insert requirements.


Floor matting



Insert requirements.


17 mm

22 mm

25 mm


Insert requirements.

Standard product features

Operating features:

The door is supplied with the following basic parts:

  • Single operating switch with the following modes: OFF - Automatic - Continuous - Hand.
  • Single digital status and error display for revolver.
  • Single digital operating switch for sliding door.
  • Single emergency stop switch.
  • Two slow-down push buttons.

Throughput capacity (based on bi-directional use):

  • 3600 x 3758 mm: 2400 per hour.
  • 4200 x 4358 mm: 2450 per hour.
  • 4800 x 4958 mm: 3220 per hour.
  • 5400 x 5558 mm: 3300 per hour.

Capacity is based on theoretical calculation with maximum occupancy of persons per segment per hour in both directions (without engagement).

Entrance opening (between cylinder doors):

  • 3600 x 3758 mm: 2000 mm.
  • 4200 x 4358 mm: 2345 mm.
  • 4800 x 4958 mm: 2685 mm.
  • 5400 x 5558 mm: 3025 mm.

Passage opening (inner sliding doors):

  • 3600 x 3758 mm: 1640 mm.
  • 4200 x 4358 mm: 1940 mm.
  • 4800 x 4958 mm: 2240 mm.
  • 5400 x 5558 mm: 2540 mm.

Canopy height:

350–1000 mm.

Product Options


  • Watertight roof at outside (180°) including two water spouts to drain the water.
  • Dust roof 180° or 360° in aluminium, RAL, anodized, stainless steel etc.
  • Air curtain (heater) including air duct and air outtake for electrical or warm water supplies.
  • Individual design options on request, such as signage, special illumination etc.

Power supply:

230 V AC or 120 V AC, 50/ 60 Hz.

Power connection:

Single phase alternating current, 16 A fused.

Power consumption:

1000 W (3600 mm diameter); 1600 W (5400 mm diameter).

Control unit:

24 V direct current (short circuit proof).

Motor current:

24 V (pulsed).

Environmental conditions:

  • Temperature range: -15–50°C.
  • Humidity range: Up to 85% relative humidity.
  • Case protection: IP 20.

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