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|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (W×D×H, adjustable) | 660 × 680 × 980–1080 mm | |
|---|---|---|
| Seat cushion dimensions | 500 mm W × 480 mm D × 70 mm T | |
| Seat height adjustment range (floor to seat top) | 440–540 mm | |
| Backrest dimensions | 470 mm W × 520 mm H × 65 mm T | |
| Fixed armrest dimensions (seat surface to arm top) | 200 mm; arm pad length 230 mm | |
| Armrest total height range (floor to arm top) | 640–740 mm | |
| 5-star base radius (center to caster contact point) | 350 mm | |
| Caster diameter | 50 mm | |
| Chrome gas lift cylinder outer diameter | 50 mm | |
| Stitching seam pitch | 8 mm | |
| Seat front edge waterfall radius | 40 mm | |
| Fixed armrest height (seat surface to arm pad top) | 200 mm; arm pad length 230 mm, arm pad width 60 mm | |
| Armrest total height range (floor to arm pad top) | 640–740 mm | |
| 5-star base radius (center pivot to caster contact point) | 350 mm | |
| Base leg cross-section dimensions | 30 mm W × 15 mm H | |
| Finished Seat Cushion Thickness | Approx. 70-90 mm | |
| Backrest Padding Thickness | Approx. 45-70 mm | |
| Lumbar Support Zone Height | Approx. 180-240 mm |
Net weight / load capacity / users / durability
| Net weight range | 15–18 kg | |
|---|---|---|
| Recommended maximum static user load | 125 kg | |
| Seat and back foam density | 45D high-density polyurethane foam | |
| Foam rebound rate | 45% | |
| Upholstery abrasion resistance (Martindale) | 50000 cycles | |
| Tilt mechanism recline angle range | 90–110 degrees from vertical | |
| 360° swivel rotation load rating | 125 kg | |
| Caster rolling durability cycle rating | 100000 cycles (≥1000 m travel) | |
| Base static load rating | 1136 kg (2500 lb) | |
| Seat/back foam density and durability | 40D–50D high-density molded polyurethane foam, 40–50% rebound rate | |
| Upholstery abrasion resistance | ≥50000 Martindale cycles | |
| Tilt mechanism performance | 90–110 degree recline range from vertical, adjustable tension for 45–125 kg user weight | |
| Swivel rotation load rating | 125 kg for full 360° rotation around central gas lift column | |
| Caster rolling performance | 100000 cycle durability (≥1000 m travel) on hard floors and low-pile carpet (≤6mm pile height) | |
| 5-star base static load rating | ≥1136 kg (2500 lb) | |
| Seat Foam Density / Rebound Reference | Approx. 35-45 kg/m³ / 50%-65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Two-tone taupe/brown smooth PU faux leather (leatherette) with visible edge stitching | |
|---|---|---|
| Seat and back padding | High-density molded polyurethane foam | |
| Internal seat/back frame | 18 mm thick curved plywood support panel | |
| Armrest construction | Curved polished chrome-plated steel loop frame with padded PU-upholstered top pads | |
| 5-star base | Polished die-cast aluminum alloy 5-leg radial base, 2.5 mm wall thickness | |
| Central height adjustment column | Chrome-plated steel Class 3 pneumatic gas lift | |
| Seat control mechanism | 2.5 mm thick stamped steel tilt and height adjustment mechanism with black powder coat finish | |
| Casters | Black twin-wheel nylon/PU composite casters with steel bearing axles | |
| Hardware fasteners | Zinc-plated steel bolts and connection brackets | |
| Internal seat/back support frame | 17–19 mm thick curved plywood panel, bonded to foam padding with industrial adhesive | |
| Assembly fasteners | Zinc-plated steel bolts, lock washers and connection brackets, standardized M6/M8 thread size | |
| Control lever grips | Black injection-molded PP plastic lever grips, fitted to steel control arms | |
| Seat Internal Support Board Thickness | Approx. 10-14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | Approx. 10-14 mm bent plywood/composite reinforced frame | |
| Gas-lift Engineering Specification | Recommended Class 3-4; outer tube approx. 50 mm; stroke approx. 90-100 mm | |
| Tilt Mechanism Plate Thickness | Approx. 2.0-2.5 mm cold-rolled steel | |
| Five-star Base Material Thickness | Metal base wall approx. 2.5-3.5 mm; diameter approx. 640-700 mm | |
| Caster Engineering Specification | 5 PU-tread swivel casters, approx. 50-60 mm diameter |
Adjustment / rotation / tilt / mobility / storage features
| Pneumatic seat height adjustment | One-touch side lever operates gas lift to adjust seat height 100 mm within 440–540 mm range; locks at any user-selected height | |
|---|---|---|
| Locking tilt function with tension control | Rear control lever locks backrest in upright position; adjustable tension knob modulates recline resistance to match user weight; recline range 20 degrees from upright | |
| 360-degree swivel rotation | Full 360° rotation around central gas lift column for easy access to surrounding desk areas without repositioning the base | |
| Rolling mobility on casters | 5 dual-wheel casters enable smooth omnidirectional movement on hard floors and low-pile carpet; no brake mechanism visible | |
| Fixed ergonomic arm support | Curved loop armrests fixed to seat frame provide stable forearm support at desk height; no height, width or pivot adjustment | |
| Built-in lumbar contour support | Contoured mid-back shape provides natural lower back support without adjustable lumbar pad; curved stitching defines lumbar support zone | |
| Waterfall seat edge pressure relief | Rounded front seat edge reduces compressive pressure on leg blood vessels during extended seated work | |
| Knock-down assembly design | Chair ships disassembled; base, gas lift, casters, seat and back attach with included hardware without specialized tools | |
| Omnidirectional rolling mobility | 5 dual-wheel casters enable smooth omnidirectional movement on hard floors and low-pile carpet (≤6mm pile); casters rotate 360° independently, no brake mechanism fitted | |
| Integrated lumbar contour support | Contoured mid-back shape provides natural lower back support at 180–220 mm above seat surface, no adjustable lumbar pad fitted; curved horizontal stitching defines the lumbar support zone | |
| Recline Angle / Lock Reference | Approx. 90°-125° with 1-3 suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage approx. 50-120 kg | |
| Rotation / Mobility Configuration | 360° swivel with 5-caster multidirectional movement |
Verified carton / gross weight / assembly / loading data
| Reference carton dimensions | 680 × 660 × 590 mm | |
|---|---|---|
| Reference carton volume (CBM) | 0.265 CBM | |
| Reference gross weight per carton | 18–21 kg | |
| Reference Package Count | 1 set / 1-2 cartons | |
| Reference Assembly Time | Approx. 15-40 minutes per set | |
| Reference Packaged Gross Weight | Approx. 17-23 kg/set | |
| Reference Carton Volume | Approx. 0.17-0.26 m³/set | |
| Indicative 20GP Loading | Approx. 100-135 sets at 85% space utilization | |
| Indicative 40HQ Loading | Approx. 250-320 sets at 85% space utilization |
Recommended spaces / users / usage modes
| Private executive office use | Suitable for manager or executive private offices; polished chrome base and taupe upholstery match professional formal office aesthetics | |
|---|---|---|
| Open-plan workstation seating | Appropriate for senior staff open workstations; height adjustment and mobility support daily desk-based computer work | |
| Conference and meeting room use | Suitable for fixed meeting room seating around conference tables; swivel and tilt support comfortable posture during long meetings | |
| Home office use | Compatible with standard 720–760 mm height home office desks; neutral taupe color coordinates with most residential and home office decor | |
| Reception and visitor administrative areas | Professional appearance suitable for reception desk staff seating; durable faux leather resists stains and is easy to clean between visitors | |
| Recommended desk height compatibility | Pairs with standard 720–760 mm height office desks; seat height adjustment range accommodates both standard and slightly elevated desk surfaces | |
| Cleaning and maintenance | Spot-clean upholstery with damp cloth and mild detergent; avoid harsh chemical cleaners to prevent damage to faux leather surface | |
| Warranty baseline recommendation | Specify minimum 3-year warranty on metal mechanisms, gas lift and base; 1-year warranty on upholstery and foam for commercial procurement | |
| Private executive/manager office use | Suitable for director, manager or executive private offices; polished chrome base and neutral taupe upholstery match professional formal office aesthetics, rated for 8+ hours daily use | |
| Senior staff open-plan workstation seating | Appropriate for senior staff open workstations; 100mm height adjustment, swivel and caster mobility support daily desk-based computer work and document review |
European market access and chemical requirements
| EN 1335-1:2020 | Office furniture - Office work chair - Part 1: Dimensions - Determination of dimensions; applicable for verifying ergonomic dimensional compliance for seated office work | |
|---|---|---|
| EN 1335-2:2018 | Office furniture - Office work chair - Part 2: Safety requirements; applicable for structural safety, stability, and strength requirements to prevent user injury | |
| EN 1335-3:2009 | Office furniture - Office work chair - Part 3: Test methods; standard test protocols to verify compliance with safety and performance requirements | |
| EN 1021-1:2014 | Upholstered furniture - Assessment of the ignitability of upholstered furniture - Part 1: Ignition source smouldering cigarette; standard fire safety test for upholstered seating |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | American National Standard for Office Chairs - General Purpose Office Chairs; applicable for commercial-grade performance, durability, stability and static load testing of this executive chair | |
|---|---|---|
| BIFMA X5.1 Test 11: Caster/chair base durability test | Applicable test to verify 5-star base and caster assembly withstand cyclic loading without fracture |
Standards applicable to China-market projects
| GB/T 3326-2016 | Applicable standards and test results require confirmation | |
|---|---|---|
| GB/T 10357.3-2013 | Test of mechanical properties of furniture - Strength and durability of chairs and stools; applicable for static load, impact, fatigue and stability performance testing of this office chair | |
| GB 18584-2001 | Indoor decorating and refurbishing materials - Limit of harmful substances of wood based furniture; applicable for formaldehyde emission limits from internal plywood frame components | |
| GB/T 19995.2-2005 | Office furniture - Part 2: Office chairs; sets general technical requirements for safety, performance, marking and instructions for office seating |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applicable standards and test results require confirmation; 2. GB/T 10357.3-2013: Test of mechanical properties of furniture - Strength and durability of chairs and stools; applicable for static load, impact, fatigue and stability performance testing of this office chair; 3. GB 18584-2001: Indoor decorating and refurbishing materials - Limit of harmful substances of wood based furniture; applicable for formaldehyde emission limits from internal plywood frame components; 4. GB/T 19995.2-2005: Office furniture - Part 2: Office chairs; sets general technical requirements for safety, performance, marking and instructions for office seating; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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