ON - 170 range

In today’s busy office environment we all spend long periods of time in hunched positions at our desks. Bizarrely, despite being bad for our bodies we choose to adopt a lazy posture. What the human body actually requires is frequent and a varied range of movements. Wilkhahn understands this key principal of ergonomics which is why we have developed Trimension® for the ergonomic ON chair. This unique tested feature is a patented technology for three dimensional, synchro-adjusted dynamic seating.

Trimension® doesn’t just encourage forwards, backwards and sideways movements, but the pelvis to rotate too - which is so important for the spine’s stability. Two separately moveable swing plates, just like two thighs, lie at the core of the technology. Minimal shifts in weight are already translated into movement. The position of the pivotal points and the way they work are exactly like knee and hip joints. As a result, the body’s equilibrium remains in perfect balance – no matter what posture it adopts or the way it moves. This new dimension in seating quickly becomes something that’s -taken for granted. Backache is effectively prevented and the metabolism, muscles and joints are stimulated.

ON at a glance

ON is the first swivel chair that enables perfect, three-dimensionally supported sitting thanks to a new type of synchronously supporting 3-D kinematics - Trimension. ON thus creates significantly greater and more natural range of motion in the lateral tilt and rotation of the pelvis and shoulders.

ON stimulates metabolism, improves spinal elasticity and muscle coordination, and increases activity without tiring the body.

The innovative mechanism with independently movable swivel arms, the three-dimensionally movable flexframe consisting of a torsionally flexible, slim upholstered seat shell and elastic back frame, as well as the backrest covering made of Fiberflex ensure excellent seating comfort.

A wide range of models and combinations leave nothing to be desired in terms of function and design. They ensure seating solutions from a single mold and from a single source.


Product information

Frame, swivel arms and casters
Gas lift and mechanism
Seat and backrest
Fabrics and covers
Accessories and misc.
Technical details
Models and dimensions


170 ON Brochure-numerique FRZ (pdf 6.93 MB)
AT / IN / ON Brochure numerique Sieges 24 FR (pdf 4.22 MB)
AT(187/72) ON(174/72) IN(184/72) ESP Brochure numerique FR (pdf 5 MB)
Informations sur le produit
170 ON brochure (pdf 1.43 MB)
170 ON Design Report Special (pdf 1.55 MB)
170 ON informacion du produit (pdf 0.33 MB)
170 ON Notice (pdf 0.86 MB)
170 ON Trimension Manual (pdf 1.52 MB)
AT / IN / ON Brochure numerique Sieges 24 FR (pdf 4.22 MB)
Cleaning and Disinfecting information (pdf 3.1 MB)
Environmental Statement (pdf 7.73 MB)
Healthy and future-proof Office Workspaces (pdf 6.34 MB)
Office-for-motion-fr (pdf 0.8 MB)
Wilkhahn Catalogue (pdf 31.74 MB)
Fichiers CAO - Revit files
170 ON 2d files (zip 0.2 MB)
170 ON 3d files (zip 8.06 MB)
170 ON 3ds files (zip 3.85 MB)
170 ON Chair Range Revit Imperial (zip 11.43 MB)
170 ON-Range Revit files metric (zip 31.54 MB)
170 ON Facts 10 2009 (pdf 0.06 MB)
170 ON dt Designpreis 2011 Silber (pdf 0.04 MB)
170 ON Ecodesign 2012 (pdf 0.03 MB)
170 ON Facts 12 2010 (pdf 0.06 MB)
170 ON Good Design USA-2010 (pdf 0.03 MB)
170 ON GREENGUARD Certification (pdf 0.67 MB)
170 ON GREENGUARD Gold Certificate (pdf 0.69 MB)
170 ON iF Product Design Award 2010 (pdf 0.04 MB)
170 ON Magazin das Buero 2012 (pdf 0.07 MB)
170 ON Quality Office Certificate (pdf 0.51 MB)
170 ON Task Chair GS Certificate (pdf 0.53 MB)
174 ON Universal Design Award 2011 (pdf 0.07 MB)
EMAS Certficate of Registration (pdf 0.55 MB)
Informations sur l'environnement
170 ON GREENGUARD Certification (pdf 0.67 MB)
170 ON GREENGUARD Gold Certificate (pdf 0.69 MB)
EMAS Certficate of Registration (pdf 0.55 MB)
Environmental Statement (pdf 7.73 MB)
Vidéos et plus
170 ON Form and Function (mp4 125.64 MB)
Siège de travail (mp4 138.01 MB)