La plupart d’entre nous, une fois installés à leur poste de travail, adoptent une posture crispée, les yeux rivés sur leur écran, et bougent beaucoup trop peu. C’est une tendance innée, car nous sommes paresseux de nature pour économiser des calories autrefois précieuses. Mais dans la vie d’aujourd’hui, il n'y a aucun doute que la santé, le bien-être et l’efficacité dépendent directement de mouvements variés et fréquents. C’est pourquoi nous avons inventé ON, le ‘siège qui bouge’, avec sa cinématique brevetée Trimension® à contact permanent dans les trois axes – une première mondiale. Ce nouveau système ne permet pas seulement des mouvements d’avant en arrière et latéraux, mais également des rotations du bassin, dont on sait que l’effet sur la colonne vertébrale est particulièrement salutaire. Deux arceaux agissant comme des jambages indépendants constituent les pièces maîtresses du mécanisme. La géométrie du système est conçue pour coïncider précisément avec les articulations des hanches et des genoux de l’utilisateur. Le résultat: un équilibre permanent entre mouvement et réaction et une liberté de mouvoir qui, très vite, semble couler de source. La cinématique innovante du siège ON est largement sollicitée dans la pratique, et particulièrement bénéfique au bien-être comme à l’efficacité: au-delà des témoignages de nombreux utilisateurs, une étude comparative effectuée sur le terrain en a apporté la preuve scientifique.
Les sièges de la gamme ON sont équipés de la cinématique exclusive Trimension® et offrent de nombreuses possibilités de réglage. Les proportions généreuses de l’assise et du dossier favorisent les changements de posture sans quitter la position assise – et cela en toute liberté, selon l’envie ou l’impératif du moment.
Pour en savoir plus sur l'ensemble de la gamme ON, y compris les modèles en porte-à-faux, consultez notre brochure:
Frame, swivel arms and casters
Frame
- five-star base, optionally made of black through-dyed plastic or die-cast aluminum
- frame surfaces: coated (black, black or white textured matte or silver satin), polished or bright chrome-plated
- swivel arms made of die-cast aluminum coated (black, black or white textured matte or silver satin), polished or bright chrome-plated
- Counter chair with additional height-adjustable foot ring, bright chrome-plated, with lock screw for fixation
Casters
- load-dependent braked twin-wheel swivel casters made of black polyamide according to DIN EN 12529
- optionally electrically conductive
Gas lift and mechanism
Gas lift
- covering of the gas lift by telescopic protection tube made of black or white through-dyed polypropylene
Mechanism
- mechanism shell made of die-cast, shot-blasted aluminum, optionally coated in black, white or silver satin finish, with top cover made of black or white through-dyed polypropylene
Seat and backrest
Seat and backrest
- highly elastic, flexibly suspended seat shell
- seat upholstery made of black or white through-dyed polypropylene, seat cushion made of polyurethane, covered with the same material as the backrest cover in Fiberflex or fabric
- all models optionally with soft padding (with extra cut foam fleece and lateral padding bottoms)
- selected models optionally with constant 6° comfort-tilt
- elastic backrest frame height-adjustable by 60 mm in six locking positions
- for models with management upholstery, the backrest frame is optionally also available with backrest upholstery with additional padding as well as on the front side additionally with laminated cut foam fleece sewn into the cover and side facings, optionally also with leather cover
- seat and back interchangeable
Armrests
Armrests
- 3D armrests made of black or white through-dyed polyamide
- Armrest pads made of black or grey through-dyed polyurethane (TPU), optionally also made of black polyurethane foam, optionally covered with leather
- upholstered, leather-covered armrests (optional) on model 175/73 with contrasting colored stitching
- armrest covers made of black through-dyed polypropylene. Armrests adjustable in height by 100 mm (eight locking positions), in depth by 40 mm, each swiveling 30° inward and outward
Fabrics and covers
Fabrics and Covers
35 Fiberflex | 47 Nova | 54 Pitch | 60 Blend | 66 Lona | 68 Kvadrat Remix | 74 Leather | 87 Leather | 91 Kvadrat SteelcutTrio 3
Accessories and misc.
Misc.
- ON swivel, visitor and meeting chairs (without headrest) can optionally also be shipped with the backrest dismantled and packed in cardboard boxes
Technical details
Function
Task chairs with Trimension®, synchronous, three-dimensional kinematics to encourage three-dimensional dynamic sitting. The perfect interaction of the synchro-adjustment mechanism, seat and backrest automatically adapts to any posture the user adopts. The supporting counter pressure is quickly and precisely adjustable in any direction (4.5 rotations max.) for people weighing from 45 to 120 kg. The backrest height is adjustable by up to 60 mm in six lockable positions. The backrest and seat can be locked in the front sitting position. The seating height is precision adjustable between 40 and 52 cm at the touch of a button with a DIN 4550-compliant gas lift. All models are optionally available with seat-depth extension of 40 to 45 cm. (The height of the counter chairs is precision adjustable between 68 and 81 cm). Meeting/visitor chairs with Trimension, on request, available with swivel-mounted column, not height adjustable, alternatively as a four-leg variant or cantilever chair, optionally stackable.
Frame
ive-star base, optionally made of black through-dyed plastic or die-cast aluminum, coated (black, black or white with a textured matte finish, or in a silver satin finish), polished or bright chrome-plated. Twin-wheel swivel casters with load-dependent braking, made of black polyamide compliant with DIN EN 12529 as the standard version for carpets; with gray soft polyurethane tire for hard floors. The casters are optionally electrically conductive. Swivel arms made of die-cast aluminum, coated (black or black with a textured matte finish or silver satin finish), polished or bright chrome-plated. Mechanism shell made of die-cast, shot-blasted aluminum, optionally coated in black or with a silver satin finish, with top cover made of black, through-dyed polypropylene. The gas lift is covered by a telescopic protective tube made of black, through-dyed polypropylene.
Counter stool with extra height-adjustable foot ring, bright chrome-plated, with lock screw to affix it and twin-wheel swivel casters with load-dependent braking.
All 24-hour chairs have a die-cast aluminum star base with extra swivel arm supports, with a modified synchro-adjustment mechanism and exceptionally hard-wearing covers from Wilkhahn’s fabric and leather collection. Designed for people weighing up to 120 kg, the models consequently comply with the DIN EN 1335 standard requirements for 24-hour use.
Seat
Highly elastic, flexibly suspended seat shell with seat upholstery panel made of black, through-dyed polypropylene, polyurethane seat cushioning covered in the same material as the backrest cover in Fiberflex, or fabric. The seat is replaceable. All models optionally have seats with soft padding (with extra cut foam and facings at the sides). In models with management grade upholstery (174/71, 175/71, 171/71), seat cushioning also with extra padding and side facings, optionally covered in leather too. Optionally with seat-depth extension from 400 to 450 mm (all types with upholstery).
Model 175/73 with soft padding, as well as color-contrasting double seams and contour stitching. Seat cushioning with side facings. Task chair models 174/7, 174/72, 175/7, 175/72 , 174/71, 175/71 optionally with a constant 6-degree tilt.
Backrest
Elastic backrest frame, height adjustable by 60 mm in six lockable positions, made of through-dyed, fiberglass-reinforced polyamide, covered with Fiberflex, optionally also with fabric (and extra padding). All models optionally with soft padding (with extra cushion thickness). For models with management grade upholstery, the backrest frame also optionally comes with back cushioning and the front of the backrest also with concealed, cut foam fleece sewn into the cover and with side facings, optionally with a leather cover. All models optionally with soft padding (with extra cut foam). Medium-high and high backrest, high backrest optionally with headrest (height 16 cm), either in the same material as the backrest cover, or covered in leather on the front. The backrest is replaceable. Model 175/73 with soft padding, as well as color-contrasting double seams and contour-defining stitching.
Armrests
3D armrests made of fiberglass-reinforced, black or white through-dyed polyamide. Armrest pads made of black, through-dyed polyurethane (TPU), optionally also made of polyurethane foam and covered in leather if desired. Upholstered, leather-covered armrests (optional) in model 175/73 with color-contrasting stitching. Armrest covers made of black, through-dyed polypropylene. Height of armrests adjustable by 100 mm (eight lockable positions), depth by 40 mm, can be swivelled 30° inwards and outwards in each case.
Standards
The ON task chairs and visitor/meeting chairs comply with the type A or B DIN EN 1335 office-chair, ANSI/BIFMA X5.1 and IGR standards. If required, NPR 1813 models are available.
Packing/Knock-down
Optionally, the ON task, visitor and conference chairs (without headrest) can also be shipped with dismantled backrests in boxes.
Models and dimensions
