| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 655 x 620 x 1100 mm | |
|---|---|---|
| Seat width | 550 mm | |
| Seat depth | 510 mm | |
| Maximum seat height from floor | 550 mm | |
| Minimum seat height from floor | 450 mm | |
| Backrest total height above seat | 580 mm | |
| Backrest width | 525 mm | |
| Five-star base diameter | 350 mm | |
| Caster diameter | 60 mm | |
| Fixed armrest height above seat | 220 mm | |
| Inner armrest clearance width | 490 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Backrest Padding Thickness | 70 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
| Net chair weight | 14.5 kg | |
|---|---|---|
| Maximum recommended user weight | 150 kg | |
| Seat foam thickness | 50 mm | |
| Seat foam density | 45 kg/m³ | |
| Backrest foam rebound rate | 60% | |
| Tilt mechanism plate thickness | 2.0 mm | |
| Gas lift stroke length | 100 mm | |
| Five-star base static load rating | 1136 kg | |
| Caster rolling durability cycles | 100000 | |
| Upholstery abrasion resistance | 50000 double rubs |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Woven polyester fabric, 0.8 mm thickness, 50000 double-rub abrasion rating | |
|---|---|---|
| Seat cushion filling | High-density polyurethane injection foam, CFC-free | |
| Backrest and lumbar pad filling | Molded high-resilience polyurethane foam | |
| Back frame and armrests | Glass-fiber reinforced PA/PP plastic, light grey/white finish | |
| Seat support plate | 12 mm multi-layer pressed wood composite panel | |
| Tilt and height mechanism | 2.0 mm thick A3 steel with black powder-coat finish | |
| Gas lift cylinder | Chrome-plated steel with black plastic collar, Class 3 rated | |
| Five-star base | Glass-fiber reinforced nylon, light grey/white matte finish | |
| Casters | Dual-wheel PU tread with white/light grey hub and black housing | |
| Upholstery seam stitch pitch | 8 stitches per 30 mm | |
| Upholstery seam construction | Polyester bonded thread, 8 stitches per 30mm seam pitch | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | Pneumatic height adjustment via right-side lever, 100 mm total stroke | |
|---|---|---|
| 360-degree swivel rotation | Full 360-degree horizontal rotation enabled by central swivel joint | |
| Backrest tilt function | Synchronized free-float rocking tilt with tension adjustment knob under seat | |
| Tilt lock position count | 3-position recline lock to secure fixed back angles | |
| Maximum backrest recline angle | 15 degrees from upright seated position | |
| Independent lumbar support | Dedicated curved lower lumbar pad providing static mid-lower back support | |
| Split back ergonomic support | Dual separate upper back panels to reduce spinal pressure while seated | |
| Rolling mobility | Dual-wheel casters enable smooth movement on hard floors and low-pile carpet | |
| Fixed arm support | Integrated loop armrests provide stable forearm support during desk work | |
| Tilt lock positions | 3-position recline lock to secure upright, mid-recline, full-recline angles | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg |
Verified carton / gross weight / assembly / loading data
| Reference Package Count | 1 set / 2 cartons | |
|---|---|---|
| Reference Assembly Time | 40 minutes per set | |
| Reference Carton Dimensions | 850× 420× 720 mm | |
| Reference Packaged Gross Weight | 23 kg/set | |
| Reference Carton Volume | 0.26 m³/set | |
| Indicative 20GP Loading | 135 sets at 85% space utilization | |
| Indicative 40HQ Loading | 320 sets at 85% space utilization |
Recommended spaces / users / usage modes
| Open-plan office workstation use | Suitable for 8 hour daily seated work at standard 760 mm height desks | |
|---|---|---|
| Home office setup | Compact footprint fits small home workspaces for remote work and study | |
| Meeting and conference rooms | Swivel and mobility features support collaborative discussion around tables | |
| Co-working shared spaces | Neutral light grey finish matches modern flexible workspace design schemes | |
| Student study desk seating | Adjustable height accommodates teen and adult users at study desks | |
| Reception and admin areas | Professional understated design fits front-desk and administrative workstations | |
| Recommended Matching Desk Size | 2.4 m executive desk | |
| Reference Daily Use Duration | 8 hours/day; confirm by ergonomic testing |
EU Market Access Requirements* EN Standards
| EN 1335-1:2020 | Office work chair dimensional, safety and strength requirements for task seating | |
|---|---|---|
| EN 1335-2:2018 | Office work chair safety performance requirements for structural components | |
| EN 1335-3:2009 | Office work chair test methods for durability and stability verification |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | General purpose office chair standard for strength, durability and stability |
|---|
Standards applicable to China-market projects
| GB/T 3325-2017 | General technical requirements for metal furniture, applicable to structural frame and base strength | |
|---|---|---|
| GB/T 35607-2017 | Office chair stability, strength and durability test method for performance verification | |
| GB 18584-2001 | Limit of harmful substances in wooden furniture components for indoor use |
This product must meet the following technical requirements: 1. GB/T 3325-2017: General technical requirements for metal furniture, applicable to structural frame and base strength; 2. GB/T 35607-2017: Office chair stability, strength and durability test method for performance verification; 3. GB 18584-2001: Limit of harmful substances in wooden furniture components for indoor use; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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