Castors
Brake-unloaded castors. Material: polypropylene (recyclable), non-chalking. Load-support limit: 50 kg per double castor. Standard version with hard castors for carpets; if requested, with soft castors for wood or synthetic flooring.
Chair base
a) Material: pressure-diecast aluminium (recyclable). Static load capacity > 1,400 kg. The diameter of the chair base satisfies design guidelines for chair dimensions to prevent the chair from tipping over.
b) Material: synthetic (recyclable). Static load capacity > 1,000 kg. The diameter of the chair base satisfies design guidelines for chair dimensions to prevent the chair from tipping over.
Height adjustment
By safety gas spring with comfortable deep vertical pneumatic cushioning. The gas spring does not support lateral forces. The seat support and the gas spring are not permanently attached to each other. Gas spring protection is by a synthetic sleeve, which also prevents grease rings and extends the service life of the gas spring.
Mechanical system
Synchronous mechanical system with fast lateral spring-force adjustment by means of a slide element. Designed to satisfy the latest ergonomic and functional requirements and expectations. Especially large opening angle for the backrest (25 to 30°). The angle of tilt of the seat and the backrest can be locked in three latching positions. Active adjustment of seat tilt, which also includes the armrests – and which sets new ergonomic standards. Material: the loadbearing parts are made of recyclable pressure-diecast aluminium.
Dynamic sitting
The point-synchronous adaptation to user’s movements eliminates the sliding effect on the user’s back (i.e., there is no “shirtpulloff” effect). The lumbar zone of the backrest always remains at the same point. The mechanical system can be set to continuous function: this means that the chair automatically adjusts to the movements of the user (dynamic sitting). Mechanical springs allow the user to quickly and easily adjust the pressure of the backrest to his or her own individual needs. These springs produce pleasant progressively increasing pressure, the farther back the user leans.
Backrest
Filigree, breathable backrest cover made of elastic, 3-D functional woven mesh. Upholstered backrest: filigree backrest with breathable woven-mesh backrest cover as supporting material, which is additionally upholstered with fabric or leather.
Elastolan: filigree backrest with air-permeable Elastollan, with unique optical structure. A pleasant sitting sensation: no perspiration, not cold. Loose chair covers: filigree backrest covered with breathable loose chair covers, which conceal the backrest frame. Optionally available with a headrest.
Seating surface
An ergonomically designed seating surface that has pronounced rounding in the forward area, to prevent constriction of circulation in the thighs. The axis of the seating-surface tilt action is located toward the front of the seat, to maintain floor contact during synchronous movement of seat and backrest. The especially designed sitting area is shaped in the rear area in such a way to effectively prevent the pelvis from tipping to the rear. The standard version always features a sliding seat.
Armrests
T-armrests: adjustable in height and width, with Soft Pads. Multi-function armrests: adjustable in height and width, and to the front and rear. Swivel action with Soft Pads. Ring-shaped armrests: fixed, but can be adjusted in width by a tool.
Foam
Cold-moulded foam on upholstery support. Contains no chlorofluorohydrocarbons (CFC). The foam is fire-resistant in accordance with DIN 75200.
Upholstery
Backrest: filigree backrest, available either with woven-mesh backrest cover, upholstered backrest, Elastollan, or loose chair covers. Seat: the seat covers are loosely attached to breathable, open-pored cold-moulded foam. This guarantees breathability and vapour permeability. The high-quality upholstery assures that no build-up of heat can take place in the chair (which enhances the bioclimate in the office).
Synthetic materials
The synthetic materials are officially marked and can be recycled. The pigments used do not contain heavy metals.
Conformity with standards
The range of swivel chairs is in accordance with DIN EN 1335.
