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Featurs and Functions

Height Adjustment

The chair offers a 200 mm electric up – down movement, controlled by either the integrated or an external foot switch. The external foot switch is connected directly to the chair however, it is also possible to control the up – down movement by switches located in the examination unit.


The backrest is infinitely adjustable from vertical to horizontal. The manual adjustment is included with the base model.

The 5° tilt in front of vertical lean is very popular for certain ENT and ophthalmic examinations.

Arm rests

The arm rests fold away upwards for certain ENT examinations and a lateral access to the patient.


For certain ENT examinations the chair top rotates to the left or right. A ball locking mechanism secures the top at 90° positions.


Foot Switches

Various foot switches are available featuring 2 or 3 functions.
- up - down
-auto down

Foot support

An optional leg support is available. The fold out foot support enhances the seating comfort for smaller patients.

Downloads / Upholstery color chart

Technical Data ak 4004 Value Unit
Dimensions and weight
Dimensions base (W x D) 630 x 680 mm
Seat cushion (W x D) 450 x 500 mm
Back rest (W x L) 465 x 870 mm
Chair height (back rest upright) 1350 mm
Max. length chair, back rest (foot rest or back rest) horizontal 1410 mm
Patient weight max. 150 kg
Chair weight 92 kg
Vertical range chair
Min. height seat cushion 500 mm
Lift 200 mm
Max. height seat cushion 700 mm
Chair rotation (snap lock every 90°)
Horizontal seat movement f + b 100 (1) mm
Castors available (electric) X
Electrical Data
Line ppower 230 (3) Volt (3)
Nominal frequency 50/60 Hz
Nominal power max.2,5 A
Duty cycle (ID 10) 6 Min.