Gray Upholstered Mid-Back Executive Swivel Chair (model OFC-MB-GRY-5STAR-01) is listed under Executive Boss Chair. Dimensions: 650 × 680 × 1040 mm. Materials: Gray upholstered surface over padded cushion, likely leather-look fabric or coated textile; visible material class only and supplier BOM required. Load capacity: 102 kg for 1 hour. Product Features: mid-back,executive,chair,upholstered,shell,five-star,swivel,base,integrated,armrests,gray,finish. This page consolidates 6 groups of specifications and GB / EN / ANSI/BIFMA standard references, with metric and imperial units. 1 supplier(s) are listed and you can request a quote online.
| Brand | JIULONGYOUSHENG | Model | OFC-MB-GRY-5STAR-01 |
| Overall dimensions (W × D × H) | 650 × 680 × 1040 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 | 18 kg |
| Recommended user weight capacity | 150 kg | Static seat-load verification target | 102 kg for 1 hour |
| Caster rolling durability target | 100000 cycles over a standard obstacle course | Gas lift cyclic durability target | 100000 height-adjustment cycles |
| Back tilt durability target | 150000 recline cycles | Seating capacity | 1 person |
| Suggested daily use duration | 8 hours per working day | Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
| Back Foam Density Reference | 38 kg/m³ | Seat upholstery | Gray upholstered surface over padded cushion, likely leather-look fabric or coated textile; visible material class only and supplier BOM required |
| Backrest upholstery | Gray continuous upholstered back panel with rounded shoulder edges; exact leather, PU, or fabric grade is not visually provable | Seat foam | Molded polyurethane cushion foam with 90 mm target thickness and 45 kg/m3 target density |
| Back foam | Polyurethane padding over a shaped back shell, with 60 mm lumbar target thickness and 38 kg/m3 target density | Foam resilience target | 42 percent ball rebound minimum |
| Internal back shell | Molded structural board or polymer shell, 8 mm target thickness, bonded to the upholstery stack | Armrest construction | Integrated curved arm supports upholstered in matching gray material with rigid internal carrier |
| Tilt mechanism | Black painted steel multi-function mechanism with an 2.5 mm plate thickness | Gas lift | Chrome-plated steel telescopic gas lift, 50 mm outer diameter, Class 4 procurement grade |
| Five-star base | Polished aluminum-alloy or chrome-plated steel five-star base with 2.5 mm target wall thickness | Casters | Black twin-wheel hard-surface casters with 60 mm wheel diameter and swivel stems |
| Seat support plate | Black steel mounting plate connecting cushion frame to tilt mechanism | Swivel function | 360-degree continuous swivel around the central gas-lift axis |
| Seat height adjustment | Pneumatic lift with 80 mm target stroke, operated by the right-side lever | Back recline | Synchronized tilt movement with 115degree target recline range, published angle 115 degrees |
| Tilt tension control | Rotary tension knob adjusts recline resistance for user weight between 50 kg and 150 kg | Tilt lock | Multi-position lock secures the back at selected upright or reclined working angles |
| Mobility | Five twin-wheel casters provide omnidirectional rolling on hard floors or low-pile carpet | Integrated arm support | Fixed curved armrests provide forearm support without width, height, or pivot adjustment |
| Lumbar contact | Shaped lower-back cushion zone provides passive lumbar support at 260 mm above the seat | Single-person occupancy | Central pedestal and 520 mm seat width support one seated user |
| 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 | 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 |
| Executive office | Suitable behind a 2000 mm executive desk where the gray upholstery and polished base provide a formal appearance | Private manager workspace | Supports 8-hour desk work with 520 mm seat width, lumbar contour, tilt control, and mobile pedestal base |
| Meeting and conference room | Usable at conference tables requiring a mobile chair with 520 mm seat-height compatibility and quiet swivel access | Consultation or reception setting | Fits professional client-facing areas due to the tailored gray shell, integrated arms, and compact 650 mm width |
| Hard-floor office environment | Recommended for wood, tile, or sealed floors; specify soft-tread casters if floor protection is contractually required | Procurement configuration | Order with arm and upholstery color samples, gas-lift certificate, caster test report, and BIFMA or EN test evidence before bulk purchase |
| Recommended Matching Desk Size | 2.4 m executive desk | Reference Daily Use Duration | 8 hours/day; confirm by ergonomic testing |
| Time | Field | Original Value | Corrected Value | Note / Status |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
Data source: Structured from factory data; final measured values prevail.
| Overall dimensions (W × D × H) | 650 × 680 × 1040 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
Data source: Product performance data; verify exact test conditions before procurement.
| Net weight | 18 kg | |
|---|---|---|
| Recommended user weight capacity | 150 kg | |
| Static seat-load verification target | 102 kg for 1 hour | |
| Caster rolling durability target | 100000 cycles over a standard obstacle course | |
| Gas lift cyclic durability target | 100000 height-adjustment cycles | |
| Back tilt durability target | 150000 recline cycles | |
| Seating capacity | 1 person | |
| Suggested daily use duration | 8 hours per working day | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
Data source: Subject to the factory material list and inspection report.
| Seat upholstery | Gray upholstered surface over padded cushion, likely leather-look fabric or coated textile; visible material class only and supplier BOM required | |
|---|---|---|
| Backrest upholstery | Gray continuous upholstered back panel with rounded shoulder edges; exact leather, PU, or fabric grade is not visually provable | |
| Seat foam | Molded polyurethane cushion foam with 90 mm target thickness and 45 kg/m3 target density | |
| Back foam | Polyurethane padding over a shaped back shell, with 60 mm lumbar target thickness and 38 kg/m3 target density | |
| Foam resilience target | 42 percent ball rebound minimum | |
| Internal back shell | Molded structural board or polymer shell, 8 mm target thickness, bonded to the upholstery stack | |
| Armrest construction | Integrated curved arm supports upholstered in matching gray material with rigid internal carrier | |
| Tilt mechanism | Black painted steel multi-function mechanism with an 2.5 mm plate thickness | |
| Gas lift | Chrome-plated steel telescopic gas lift, 50 mm outer diameter, Class 4 procurement grade | |
| Five-star base | Polished aluminum-alloy or chrome-plated steel five-star base with 2.5 mm target wall thickness | |
| Casters | Black twin-wheel hard-surface casters with 60 mm wheel diameter and swivel stems | |
| Seat support plate | Black steel mounting plate connecting cushion frame to tilt mechanism |
Adjustment / rotation / tilt / mobility / storage features
Data source: Functional configuration; the supplier specification prevails.
| Swivel function | 360-degree continuous swivel around the central gas-lift axis | |
|---|---|---|
| Seat height adjustment | Pneumatic lift with 80 mm target stroke, operated by the right-side lever | |
| Back recline | Synchronized tilt movement with 115degree target recline range, published angle 115 degrees | |
| Tilt tension control | Rotary tension knob adjusts recline resistance for user weight between 50 kg and 150 kg | |
| Tilt lock | Multi-position lock secures the back at selected upright or reclined working angles | |
| Mobility | Five twin-wheel casters provide omnidirectional rolling on hard floors or low-pile carpet | |
| Integrated arm support | Fixed curved armrests provide forearm support without width, height, or pivot adjustment | |
| Lumbar contact | Shaped lower-back cushion zone provides passive lumbar support at 260 mm above the seat | |
| Single-person occupancy | Central pedestal and 520 mm seat width support one seated user | |
| 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
Data source: Reference for export quotations and container planning.
| 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
Data source: Recommended applications based on product form and category.
| Executive office | Suitable behind a 2000 mm executive desk where the gray upholstery and polished base provide a formal appearance | |
|---|---|---|
| Private manager workspace | Supports 8-hour desk work with 520 mm seat width, lumbar contour, tilt control, and mobile pedestal base | |
| Meeting and conference room | Usable at conference tables requiring a mobile chair with 520 mm seat-height compatibility and quiet swivel access | |
| Consultation or reception setting | Fits professional client-facing areas due to the tailored gray shell, integrated arms, and compact 650 mm width | |
| Hard-floor office environment | Recommended for wood, tile, or sealed floors; specify soft-tread casters if floor protection is contractually required | |
| Procurement configuration | Order with arm and upholstery color samples, gas-lift certificate, caster test report, and BIFMA or EN test evidence before bulk purchase | |
| 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 furniture seating | Defines dimensions, safety, and structural design considerations for office task seating | |
|---|---|---|
| EN 1335-2:2018 office performance requirements | Recommended basis for strength, durability, stability, and safety acceptance testing | |
| EN 1335-3:2009 office test methods | Specifies mechanical test methods supporting the load and durability verification targets | |
| EN 1021-1:2014 upholstered seating ignitability | Recommended cigarette-ignition fire test for the upholstery and foam assembly |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 office chairs | Recommended North American acceptance standard for general-purpose office chair safety and durability | |
|---|---|---|
| BIFMA X5.1 static load tests | Applicable standards and test results require confirmation |
Standards applicable to China-market projects
| GB/T 3324-2017 general technical requirements | Applies to wooden or wood-derived furniture construction, finish quality, dimensional stability, and inspection of upholstered chair structural elements | |
|---|---|---|
| GB/T 10357 furniture mechanical tests | Recommended test basis for seat, back, armrest, leg strength, stability, and fatigue verification |
This product must meet the following technical requirements: 1. GB/T 3324-2017 general technical requirements: Applies to wooden or wood-derived furniture construction, finish quality, dimensional stability, and inspection of upholstered chair structural elements; 2. GB/T 10357 furniture mechanical tests: Recommended test basis for seat, back, armrest, leg strength, stability, and fatigue verification; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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