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Features 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 advantageous popular for certain ENT and ophthalmic examinations


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

Seat rotation

For certain ENT examinations the seat cushion rotates separately from the chair infinetly to the left or right. A  locking mechanism secures any seat cushion position  by a lever.

Foot support

The foldaway foot support enhances the seating comfort for smaller patients.


Foot Switches

Various foot switches are available featuring 2, 3 or 5 functions.
- up - down
-auto down
- seat fwd - bwd

Electric back rest

An electric back-rest movement is available as an option. The switches are located on both sides of the back rest.

Seat cushion movement

A 100 mm fwd - bwb movement of the seat, either manually or electrically controlled, is available as an option

Retractable castors

For wheelchair patients the chairs can be moved out of the way on a retractable set of wheels. The wheels are driven by the electric actuator.

Downloads / Upholstery color chart

Technical Data ak 5004 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) 450 x 930 mm
Chair height back rest upright 1410 mm
Max. length chair, back rest (foot rest or back rest) horizontal 1630 mm
Patient weight max. 150 kg
weight 107 kg
Vertical range chair
Min. height seat cushion 530 mm
Lift 200 mm
Max. height seat cushion 730 mm
Chair rotation (snap lock every 90°)
Horizontal seat movement f + b 100 (1) mm
Castors available (electric) X
Elektrical Data
Line power 230 (3) Volt (3)
Nominal frequency 50/60 Hz
Nominal power max.2,5 A
Duty cycle (ID 10) 6 Min.