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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)	620 × 650 × 1050 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.

Net weight	17 kg
Recommended user weight capacity	150 kg
Gas-lift rated static load	250 kg
Back tilt travel	18 degrees
Swivel rotation	360 degrees
Recommended daily use	8 hours
Seat foam density	45 kg/m3
Back foam density	35 kg/m3
Foam rebound	40%
Color options represented	1 black color

PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

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

Outer upholstery	Black leather-look facing, 1.2 mm target thickness, stitched into segmented panels
Seat cushion	90 mm molded polyurethane foam at 45 kg/m3 density target
Back cushion	70 mm polyurethane padding at 35 kg/m3 density target
Internal seat shell	12 mm molded plywood or engineered composite seat board
Back frame	1.5 mm steel tubular inner frame with formed edge support
Armrest pads	Black padded upholstered tops over rigid support rails
Arm supports	Chrome-finished bent metal supports with polished end caps
Five-star base	Polished aluminum or chrome-plated steel 700 mm base, 3.0 mm section target
Gas lift	50 mm chrome-plated steel class-4 gas lift
Tilt mechanism	2.5 mm steel tilt plate with spring tension assembly
Casters	Black nylon 60 mm twin-wheel casters with steel roller axles
Stitching	Black bonded polyester thread at 8 stitches per 50 mm target

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Height adjustment	Pneumatic seat-height lift with 80 mm travel controlled by the right-side lever
Back recline	Synchronized conventional tilt with 18 degree rearward travel
Tilt lock	Single-position upright lock engaged through the seat-side control lever
Tension adjustment	Rotary tension knob tunes recline resistance for users up to 150 kg
Swivel function	360 degree full rotation on a central bearing and gas-lift assembly
Mobility	Five hooded twin-wheel casters provide rolling movement on hard floors and low-pile carpet
Arm support	Fixed curved loop arms supply 220 mm forearm support without width or height adjustment
Back support	Segmented mid-back with horizontal lumbar band and two vertical upper panels
Seat support	Waterfall front seat edge reduces pressure behind the knees during 8-hour desk work
Replacement caster compatibility	Standard 11 mm grip-neck stem for field replacement
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 workstation	Pairs with 1800 mm management desks where black upholstery and chrome trim suit formal offices
Private office	Suits daily computer work, document review and visitor-facing meetings behind a desk
Conference room	Useful as premium seating for boardrooms requiring swivel movement and consistent black finish
Manager or supervisor area	Appropriate for users needing arm support, moderate lumbar contour and compact mid-back height
Hotel business center	Suitable for short meetings and computer stations where durable black upholstery simplifies maintenance
Reception consultation desk	Fits behind reception counters or consultation stations requiring a polished professional appearance
Recommended floor surface	Best on carpet tile, hardwood, laminate or commercial vinyl with 60 mm twin-wheel casters
Recommended Matching Desk Size	2.4 m executive desk

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

Office chair safety	EN 1335:2018
Office chair dimensions	EN 1335:2020
Office chair durability	EN 1335:2009
Upholstery fabric properties	EN 14465:2003
Castor safety	EN 12528:1999

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

Office chair safety and durability	ANSI/BIFMA X2017
Base load verification	ANSI/BIFMA X2017Clause 7
Caster durability	ANSI/BIFMA X2017Clause 11
Gas-lift safety review	BIFMA X2017plus DIN 4550 Class 4

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

Safety and dimensional review	GB/T 35389
Upholstered furniture durability	GB/T 3324
Formaldehyde and emissions testing	GB 18580
Flammability review	GB 17927.1

Standardized tender description text

This product must meet the following technical requirements:
1. Safety and dimensional review: GB/T 35389;
2. Upholstered furniture durability: GB/T 3324;
3. Formaldehyde and emissions testing: GB 18580;
4. Flammability review: GB 17927.1;
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 Chair, model OFC-MB-BLK-520, presents a formal executive seating profile with black leather-look upholstery, padded segmented panels, a mid-height back, and bright chrome-finished metal detailing. Its compact proportions and polished five-star base create a structured appearance suited to desks and meeting environments where a consistent professional finish is required. The chair measures 620 by 650 by 1050 millimeters, with 540 millimeters of clear width between the fixed curved loop arms. Construction balances cushioned contact surfaces with a metallic support structure. The seat uses a 90-millimeter molded polyurethane cushion at a 45 kg/m3 density target, while the back has 70 millimeters of padding at a 35 kg/m3 density target and a 240-millimeter lumbar support zone. Upholstery is black leather-look facing at 1.2 millimeters target thickness, stitched into segmented panels. The internal seat board is 12-millimeter molded plywood or engineered composite, and the back is supported by a 1.5-millimeter steel tubular frame with formed edge support. Fixed armrests combine padded upholstered tops, rigid rails, chrome-finished bent metal supports, and polished end caps. The chair is built around a 50-millimeter chrome-plated steel class-4 gas lift and a 700-millimeter polished aluminum or chrome-plated steel five-star base with a 3.0-millimeter section target. Steel tilt hardware, a central bearing, and hooded nylon twin-wheel casters complete the mechanism. It weighs 17 kilograms and is rated for users up to 150 kilograms; the gas-lift static load rating is 250 kilograms. Daily-use functions support standard desk work over an eight-hour period. A right-side lever controls 80 millimeters of pneumatic seat-height travel. The synchronized conventional tilt offers 18 degrees of rearward recline, with a single-position upright lock and a rotary tension knob for adjusting recline resistance. Full 360-degree swivel allows easy turning, while the five twin-wheel casters enable movement on hard floors and low-pile carpet. Fixed arms provide 220 millimeters of forearm support but do not adjust in width or height. This unbranded executive chair is suitable for private management offices, executive workstations with 1800-millimeter desks, manager or supervisor areas, boardrooms, hotel business centers, and reception or consultation stations. Its black finish and chrome trim fit formal computer work, document review, short meetings, and visitor-facing settings. Procurement planning should note that each set ships in two cartons, with packaged gross weight of 23 kilograms and carton dimensions of 850 by 420 by 720 millimeters. Reference assembly time is 40 minutes per set, and carton volume is 0.26 cubic meters. A 20-foot general-purpose container can accommodate 135 sets at 85 percent space utilization.

Mid-Back Black Leather Executive Swivel Chair Specifications

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