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Black Split-Dual Back Ergonomic Swivel Office Chair with Fixed Armrests Specifications

ERG-OFC-SPLITBACK-001

Code:NK64YYV1
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2026-08-09 14:56Popularity: 53
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ERG-OFC-SPLITBACK-001

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PRODUCT MODULE 01 / 06

Physical Dimensions

Automatic mm / inch conversion · Core engineering specifications

Overall dimensions655 x 720 x 1160 mm
Seat height adjustment range600 mm, maximum adjustable seat height 600 mm
Seat width510 mm
Seat depth510 mm
Backrest total height580 mm
Five-star base diameter350 mm
Armrest height above seat210 mm
Caster diameter60 mm
Lumbar support pad width440 mm
Seat cushion thickness80 mm
Backrest pad thickness50 mm
Finished Seat Cushion Thickness90 mm
Backrest Padding Thickness70 mm
Lumbar Support Zone Height240 mm
Clear Width Between Armrests540 mm
PRODUCT MODULE 02 / 06

Weight, Load & Performance

Net weight / load capacity / users / durability

Net weight18.4 kg
Recommended static user load150 kg
Seat foam density45 kg/m³
Seat foam rebound rate55%
Mesh upholstery abrasion resistance50000 cycles
Caster rolling durability100000 cycles
Base static load rating1136 kg
Gas lift stroke150 mm
Tilt lock angle18 degrees
Warranty period5 years
PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

Backrest upholsteryBreathable black polyester mesh
Seat upholsteryBlack woven fabric over foam
Seat cushion coreHigh-density cold-cured polyurethane foam
Seat internal support12 mm thick plywood panel
ArmrestsInjection-molded black polypropylene fixed loop arms
Backrest framePolypropylene with fiberglass reinforcement
Five-star baseInjection-molded black nylon
Tilt mechanism2.5 mm thick steel butterfly tilt plate
Height adjustment gas liftClass 3 chrome-plated steel pneumatic cylinder
CastersBlack polyurethane swivel casters
Seam stitch pitch8 mm
Upper back upholsteryBlack breathable polyester open-weave mesh
PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Pneumatic seat height adjustmentSingle-lever controlled, 150 mm stroke to match desk heights 760 mm
Center-tilt rocking function18-degree backward tilt with tension adjustment knob under seat
Multi-position tilt lockLocks tilt in upright and 2 intermediate reclined positions via seat lever
Dual-panel back supportTwo separate upper back pads and independent lumbar pad for spinal alignment
Fixed contoured armrestsCurved loop arms support forearms during typing without height/width adjustment
Smooth-rolling castersFive dual-surface PU casters roll without scratching hard floors or catching carpet
Ergonomic weight distributionContoured seat pan reduces pressure on thighs during 8-hour work shifts
360-degree swivel rotationFull rotational movement around gas lift axis for easy access to adjacent work surfaces
Smooth multi-surface mobilityFive PU casters roll without scratching hard floors or catching low-pile carpet
Waterfall seat edge designContoured front seat pan reduces thigh pressure during 8-hour continuous work shifts
Independent lumbar supportCurved lower back panel maintains lower spine support across all recline positions
Recline Angle / Lock Reference125° with 3suggested lock positions
PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Reference Package Count1 set / 2 cartons
Reference Assembly Time40 minutes per set
Reference Carton Dimensions850× 420× 720 mm
Reference Packaged Gross Weight23 kg/set
Reference Carton Volume0.26 m³/set
Indicative 20GP Loading135 sets at 85% space utilization
Indicative 40HQ Loading320 sets at 85% space utilization
PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

Corporate open-plan workstationsFits standard 760 mm desk heights for 8-hour daily desk work
Home office study spacesCompact footprint fits small home desks without occupying excess floor space
Meeting and conference roomsSwivel and tilt function supports casual collaboration and long meetings
Coworking shared spacesDurable construction withstands frequent multi-user daily rotation
Task work areas for administrative staffFixed armrests and lumbar support suit typing and document processing tasks
Training room seatingCaster mobility allows easy reconfiguration of training room layouts
Coworking shared hot-desk areasDurable construction withstands frequent multi-user daily rotation and adjustment
Administrative staff task workstationsFixed armrests and lumbar support reduce fatigue during typing and document processing
STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020Applicable for office chair dimensional, safety and strength requirements
EN 1335-2:2018Applicable for office chair mechanical safety test methods
EN 1022:2018Applicable for seating stability verification for domestic and contract use
STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017Applicable for general-purpose office chair safety and performance testing
ANSI/BIFMA X5.11-2015Applicable for heavy-user rated office chair load verification if specified
STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016Applicable for office chair dimensional accuracy and structural stability verification
GB/T 10357.3-2013Applicable for chair strength and durability mechanical performance testing
GB 28007-2011Applicable for upholstered furniture formaldehyde emission limits for indoor use
GB/T 35607-2017Applicable for furniture caster rolling resistance and durability verification
Standardized tender description text
This product must meet the following technical requirements:
1. GB/T 3326-2016: Applicable for office chair dimensional accuracy and structural stability verification;
2. GB/T 10357.3-2013: Applicable for chair strength and durability mechanical performance testing;
3. GB 28007-2011: Applicable for upholstered furniture formaldehyde emission limits for indoor use;
4. GB/T 35607-2017: Applicable for furniture caster rolling resistance and durability verification;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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Product Description

The Black Split-Dual Back Ergonomic Swivel Office Chair with Fixed Armrests, model ERG-OFC-SPLITBACK-001, delivers balanced support and understated professional styling for regular work use. Its silhouette features a streamlined mid-back profile with clean, matte black finishes across all components, built on a nylon five-star base fitted with smooth PU casters for a polished, unobtrusive look that integrates seamlessly with a range of interior design schemes. Fixed curved loop armrests sit at a consistent height above the contoured seat, creating a cohesive visual line without protruding adjustment hardware that can clutter tight work areas. Construction prioritizes durability and consistent comfort over extended use. The backrest uses breathable black polyester mesh stretched over a fiberglass-reinforced polypropylene frame, structured as two separate upper back pads paired with an independent lumbar pad to support natural spinal alignment. The seat features a high-density cold-cured polyurethane foam core with 45 kg/m³ density, supported by a 12 mm thick plywood panel and wrapped in black woven fabric, shaped to reduce thigh pressure during full work shifts. The structure is reinforced with a 2.5 mm thick steel butterfly tilt plate, Class 3 chrome-plated steel pneumatic height adjustment cylinder, and injection-molded components for reliable long-term performance, with mesh upholstery rated for 50000 abrasion cycles, casters for 100000 rolling cycles, and a base static load rating of 1136 kg to support a maximum static user load of 150 kg. Total net weight is 18.4 kg, with overall dimensions of 655 x 720 x 1160 mm. Core practical functions support flexible work postures: a single under-seat lever controls 150 mm of pneumatic seat height adjustment to match standard 760 mm desk heights, with a separate tension knob regulating an 18-degree center-tilt rocking function, and a lever lock to secure the chair in the upright position or two intermediate reclined angles. The five dual-surface PU casters roll smoothly without scratching hard flooring or catching carpet fibers, while fixed contoured armrests provide steady forearm support during typing and administrative tasks. This chair is suited for a wide range of work settings, including corporate open-plan workstations, compact home office studies, meeting and conference rooms, shared coworking spaces, administrative task areas, and training rooms, where its swivel mobility and durable build support both focused individual work and collaborative group activity. For procurement teams, note that each unit ships across two cartons, with a packaged gross weight of 23 kg and reference assembly time of 40 minutes per set. Shipping logistics note a 20GP container holds 135 sets at 85% space utilization, suitable for bulk workspace fit-outs.

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