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PRODUCT MODULE 01 / 06

Physical Dimensions

Automatic mm / inch conversion · Core engineering specifications

Data source: Structured from factory data; final measured values prevail.

Overall dimensions (W × D × H)	610 × 620 × 1010 mm
Finished Seat Cushion Thickness	90 mm
Backrest Padding Thickness	70 mm
Lumbar Support Zone Height	240 mm
Clear Width Between Armrests	540 mm

PRODUCT MODULE 02 / 06

Weight, Load & Performance

Net weight / load capacity / users / durability

Data source: Product performance data; verify exact test conditions before procurement.

Recommended user weight capacity	136 kg
Static base load rating	1134 kg
Gas-lift class and rating	Class 4, 150 kg rated lift
Foam density, seat	45 kg/m3
Foam density, back	35 kg/m3
Foam rebound	45%
Caster rolling durability	100000 cycles
Seat-slide cyclic durability	100000 cycles
Recommended user height range	1900 mm
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%

PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

Data source: Subject to the factory material list and inspection report.

Seat upholstery	Black full-grain leather-look surface over sewn cushion; material grade requires supplier BOM confirmation
Back upholstery	Two horizontal black upholstered back pads with a visible separation seam
Seat cushion	80 mm molded polyurethane foam, proposed 45 kg/m3 high-resilience grade
Back cushion	70 mm layered polyurethane foam, proposed 35 kg/m3 support grade
Internal seat shell	12 mm molded plywood or reinforced polymer seat carrier supporting cushion and mechanism
Back support frame	2.0 mm bent chromed steel side rails connecting upper and lower back pads
Armrest pads	Black padded rectangular tops with polished metal arm supports
Arm frame	25 mm diameter polished chromed steel cantilever frame with welded seat mounts
Gas lift	50 mm chromed steel telescoping gas cylinder with black release lever
Mechanism	3 mm black powder-coated steel multi-function tilt plate with tension housing
Five-star base	Polished die-cast aluminum or chromed steel five-star base with formed ribs
Casters	Black nylon twin-wheel casters with steel mounting stems and hard-floor treads

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Swivel function	360-degree full rotation around the gas-lift center for desk-side access
Seat height adjustment	100 mm gas-lift travel from 440 to 540 mm using the right-side paddle
Backrest recline	Synchronous tilt travel of 15 degrees from upright to reclined working position
Tilt lock	Three-position lock at upright, mid-recline and full-recline angles
Tilt tension control	Rear knob adjusts recline resistance for users up to 136 kg
Arm support	Fixed 230 mm high padded armrests provide forearm support without width or height adjustment
Mobility	Five 60 mm twin-wheel casters provide omnidirectional movement on hard floors and low-pile carpet
Back support	Two-section mid-back padding supports lumbar and lower thoracic regions without separate headrest
Seat entry clearance	Open-front padded seat with 200 mm under-seat clearance allows close approach to a 760 mm desk
Floor protection	Soft black twin-wheel treads reduce floor marking and distribute load over five contact points
Recline Angle / Lock Reference	125° with 3suggested lock positions
Tilt Tension User-weight Range	Reference adjustment coverage 120 kg

PRODUCT MODULE 05 / 06

Packaging & Logistics

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

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

Data source: Recommended applications based on product form and category.

Executive office	Suitable for a 2000 mm executive desk with black leather-style seating and polished metal trim
Open-plan workstation	Fits individual task positions requiring swivel access, caster mobility and 8-hour lumbar support
Meeting room	Usable around 2400 mm conference tables with 760 mm work height
Home office	Suitable for users weighing up to 136 kg at a standard-height desk in a private study
Reception or manager touch-down area	Black upholstery and chromed base coordinate with professional guest or temporary work settings
Hard-floor and low-pile carpet spaces	Five twin-wheel casters support movement across tile, wood, laminate and low-pile carpet
Recommended Matching Desk Size	2.4 m executive desk
Reference Daily Use Duration	8 hours/day; confirm by ergonomic testing

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1 applicability	Use for office-chair dimensions, safety-based clearances and dimensional verification
EN 1335-2 applicability	Use for structural safety requirements including stability, strength and mechanism integrity
EN 1335-3 applicability	Use for mechanical safety and durability test methods during procurement inspection
EN 1022 applicability	Use for seating stability testing on the five-star swivel caster base

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1 durability applicability	Use 100000-cycle targets for swivel, tilt, caster and fatigue testing

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 10357.3 applicability	Use for seat, back and arm strength and durability test acceptance on office seating
GB/T 3324 applicability	Use for general wooden furniture dimensions, workmanship and inspection requirements if wood components are supplied
GB 17927 applicability	Use for upholstered furniture soft-furniture safety and structure requirements
GB/T 27923 applicability	Use for office-chair information disclosure, sizing and procurement documentation

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 10357.3 applicability: Use for seat, back and arm strength and durability test acceptance on office seating;
2. GB/T 3324 applicability: Use for general wooden furniture dimensions, workmanship and inspection requirements if wood components are supplied;
3. GB 17927 applicability: Use for upholstered furniture soft-furniture safety and structure requirements;
4. GB/T 27923 applicability: Use for office-chair information disclosure, sizing and procurement documentation;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Mid-Back Black Leather Executive Swivel Office Chair, model EOCH-MB-BLK-CR-01, presents a tailored executive seating form with black leather-look upholstery, a mid-height back, and polished chromed metal detailing. Its visual character is defined by a sewn black seat cushion, two horizontal back pads separated by a visible seam, and padded rectangular armrest tops mounted on polished cantilever supports. The chromed steel five-star base and black twin-wheel casters give the chair a structured office profile while supporting 360-degree movement around the gas-lift center. Construction combines molded and layered polyurethane foam with a chromed steel frame. The seat uses an 80 mm molded cushion with a finished cushion thickness of 90 mm and proposed 45 kg/m3 high-resilience foam. The backrest uses 70 mm layered foam at a proposed 35 kg/m3 support grade, with a 240 mm lumbar support zone and 2.0 mm bent chromed steel side rails connecting the upper and lower pads. Beneath the seat, a 12 mm molded plywood or reinforced polymer carrier supports the cushion and mechanism. The arm frame uses 25 mm diameter polished chromed steel with welded seat mounts, while the 50 mm chromed telescoping gas cylinder includes a black release lever. Material grade for the full-grain leather-look surface requires confirmation in the supplier bill of materials. Functional features support active desk work. Seat height adjusts through 100 mm of gas-lift travel, from 440 to 540 mm, using a right-side paddle. The synchronous backrest recline moves 15 degrees from upright to a reclined working position and can be locked at upright, mid-recline, or full-recline settings. A rear knob controls tilt tension for users up to the recommended weight capacity of 136 kg. Fixed padded armrests are 230 mm high and leave a 540 mm clear width between them, offering forearm support without width or height adjustment. Five 60 mm twin-wheel casters provide omnidirectional movement on hard floors and low-pile carpet. The chair suits executive offices paired with a 2000 mm desk, open-plan task positions, meeting rooms around 2400 mm conference tables at 760 mm work height, private home offices, reception areas, and manager touch-down spaces. Its black upholstery and chromed base coordinate with professional interiors using tile, wood, laminate, or low-pile carpet. Procurement teams should note the unbranded supply, two-carton packaging, 40-minute reference assembly time, 23 kg packaged gross weight, and 0.26 m3 carton volume per set. A 20GP container can accommodate 135 sets at 85 percent space utilization. Published ratings include a 136 kg recommended user weight, Class 4 150 kg gas lift, 1134 kg static base load, 45 percent foam rebound, and 100000-cycle caster rolling durability.

Mid-Back Black Leather Executive Swivel Office Chair Specifications

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