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|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall assembled dimensions | 640 x 700 x 1220 mm | |
|---|---|---|
| Five-star base span diameter | 700 mm | |
| Seat width at front edge | 480 mm | |
| Seat depth | 460 mm | |
| Backrest total height from seat surface | 760 mm | |
| Seat height adjustment range (lowest to highest) | 540 mm | |
| Backrest maximum width at lumbar region | 450 mm | |
| Gas lift column exposed diameter | 50 mm | |
| Caster wheel diameter | 60 mm | |
| Seat pan front edge thickness | 20 mm | |
| Maximum seat height from floor | 540 mm | |
| Minimum seat height from floor | 440 mm | |
| Seat edge trim width | 10 mm | |
| Base leg cross-section thickness | 3 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Backrest Padding Thickness | 70 mm |
Net weight / load capacity / users / durability
| Product net weight | 15 kg | |
|---|---|---|
| Recommended maximum user weight | 150 kg | |
| Five-star base static load rating | 500 kg | |
| Gas lift vertical adjustment stroke | 100 mm | |
| Tilt mechanism maximum recline angle | 15 degrees | |
| Caster rolling durability | 100000 cycles | |
| Tilt mechanism operational durability | 300000 cycles | |
| Shell static impact load rating | 136 kg | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back shell | 20mm thick bent laminated hardwood plywood with light oak grain veneer, clear satin lacquer finish | |
|---|---|---|
| Five-star base | Polished die-cast aluminum alloy, 3mm wall thickness, bright chrome-like polished finish | |
| Central height adjustment column | Steel gas lift with chrome-plated outer sleeve, Class 3 pressure rating | |
| Caster wheels | Dual-wheel polyurethane tread with blue accent hub, black nylon wheel body, steel mounting stem | |
| Under-seat tilt mechanism | 3mm thick stamped steel plate with black powder-coat finish, steel tilt tension spring | |
| Seat and back shell edge trim | Thin polished aluminum or chrome edge binding along bentwood perimeter | |
| Mounting hardware | Zinc-plated steel bolts and brackets connecting wood shell to mechanism | |
| Seat surface | Exposed bentwood finish with no visible upholstery or cushioning | |
| Backrest horizontal joint | Finger-jointed laminated wood seam between upper and lower back shell sections, precision sanded flush | |
| Mechanism lever | Black nylon-coated steel adjustment lever for height and tilt control, mounted under front seat edge | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame |
Adjustment / rotation / tilt / mobility / storage features
| 360-degree swivel rotation | Full 360° horizontal rotation enabled by central swivel joint between gas lift and seat mechanism, no rotation lock | |
|---|---|---|
| Pneumatic seat height adjustment | Height adjustable via under-seat activation lever, 100mm vertical travel between 440mm and 540mm seat height | |
| Seat tilt recline | Backward tilt of integrated seat and back shell up to 15 degrees, with adjustable tilt tension control knob, single upright locked position | |
| Rolling mobility | Smooth rolling on hard tile, wood and low-pile carpet surfaces via five dual-wheel casters mounted to base leg ends | |
| Armless integrated design | No attached armrests, allowing unobstructed movement and close approach to desk surfaces | |
| Ergonomic lumbar support | Contoured bentwood back shape provides built-in lumbar curve at the lower back region without separate adjustable cushions | |
| Knock-down assembly | Tool-assisted assembly required to attach casters to base, connect gas lift, and mount seat/back assembly to mechanism | |
| Tilt tension adjustment | Rotary tension knob under seat adjusts spring resistance from 40N to 120N to match user weight for recline control | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg | |
| Rotation / Mobility Configuration | 360° swivel with 5-caster multidirectional movement |
Verified carton / gross weight / assembly / loading data
| Packaging unit | 1 chair per carton | |
|---|---|---|
| Shipping carton dimensions | 800 x 650 x 400 mm | |
| Gross shipping weight per carton | 18 kg | |
| Packaged volume per unit | 0.21 CBM | |
| Required assembly time | 20 minutes | |
| 20GP container loading quantity | 135 units | |
| 40HQ container loading quantity | 340 units | |
| Standard warranty period | 3 years | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set |
Recommended spaces / users / usage modes
| Executive private offices | Sleek minimalist bentwood design complements modern executive workspaces, providing professional ergonomic seating for daily desk work | |
|---|---|---|
| Modern conference and meeting rooms | Armless, streamlined profile fits neatly under conference tables, supporting comfortable seating during extended meetings without bulky armrest obstruction | |
| Home office workspaces | Compact footprint and light wood finish matches Scandinavian and mid-century modern home decor, suitable for residential work from home setups | |
| Open plan workstations | Quiet PU casters and swivel function support easy movement between workstation zones, with durable construction for daily commercial use | |
| Co-working and flexible office spaces | Neutral light wood and polished metal finish coordinates with varied interior palettes, with robust construction suitable for high-traffic shared use | |
| Design studio and creative workspaces | Contemporary bentwood aesthetic supports creative studio environments, offering a design-forward alternative to standard upholstered office chairs | |
| Executive reception areas | Slim profile and premium finish presents a polished appearance for visitor seating in executive reception zones, with rolling mobility for easy reconfiguration | |
| Recommended Matching Desk Size | 2.4 m executive desk |
EU Market Access Requirements* EN Standards
| EN 1335-1:2020 | Applies to office work chairs, defining dimensional requirements for seat height, depth, backrest dimensions and clearance for adult office use | |
|---|---|---|
| EN 1335-2:2018 | Applies to office work chair safety requirements, specifying stability, strength and durability test criteria for commercial office seating | |
| EN 1022:2018 | Applies to seating furniture stability, defining test methods to prevent forward, backward and sideways tipping during normal use |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applies to general-purpose office chairs, defining test methods and performance requirements for static load, durability, stability and component strength | |
|---|---|---|
| ANSI/BIFMA X5.11-2015 | Applies to large occupant office chairs, defining enhanced load requirements for users up to 181kg, applicable for heavy-duty executive seating applications |
Standards applicable to China-market projects
| GB/T 3326-2016 | Applies to furniture dimensional coordination for office desks and chairs, defining recommended seat height, depth and backrest dimensions for adult office seating | |
|---|---|---|
| GB/T 10357.3-2013 | Applies to mechanical performance test methods for chair seating, specifying static load, impact and durability test procedures for office chair strength and stability | |
| GB 28007-2011 | Applies to general technical requirements for children's and adult office chairs, defining safety standards for structural stability, edge finishing and hazardous material limits | |
| GB 18584-2001 | Applies to indoor decoration and refurbishment materials, defining formaldehyde emission limits for wood-based furniture components used in office seating |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applies to furniture dimensional coordination for office desks and chairs, defining recommended seat height, depth and backrest dimensions for adult office seating; 2. GB/T 10357.3-2013: Applies to mechanical performance test methods for chair seating, specifying static load, impact and durability test procedures for office chair strength and stability; 3. GB 28007-2011: Applies to general technical requirements for children's and adult office chairs, defining safety standards for structural stability, edge finishing and hazardous material limits; 4. GB 18584-2001: Applies to indoor decoration and refurbishment materials, defining formaldehyde emission limits for wood-based furniture components used in office seating; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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