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Black Leather Mid-Back Executive Swivel Office Chair Specifications

OFC-MB-PL-CR-50Code:TND7EHV1

Black Leather Mid-Back Executive Swivel Office Chair (model OFC-MB-PL-CR-50) is listed under Executive Boss Chair. Dimensions: 620 × 650 × 1010 mm. Materials: Black smooth leather-look facing over padded cushion; material grade requires supplier BOM confirmation. Load capacity: 500 kg. Product Features: black,upholstery,polished,metal,frame,mid-back,swivel,executive,chair,five-star,caster,base. 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.

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2026-10-31 18:48Popularity: 1
BrandJIULONGYOUSHENGModelOFC-MB-PL-CR-50
Overall dimensions (W × D × H)620 × 650 × 1010 mmFinished Seat Cushion Thickness90 mm
Backrest Padding Thickness70 mmLumbar Support Zone Height240 mm
Clear Width Between Armrests540 mmRecommended user weight capacity150 kg
Net weight18 kgSeat foam density45 kg/m3
Back foam density35 kg/m3Foam rebound40%
Gas lift service classClass 4, 100 mm strokeBase static load rating500 kg
Caster rolling durability100,000 cyclesRecommended daily use duration8 hours
Seating capacity1 personSeat upholsteryBlack smooth leather-look facing over padded cushion; material grade requires supplier BOM confirmation
Back upholsteryBlack smooth upholstered panel with stitched perimeter and gently rounded cornersSeat cushion core90 mm polyurethane foam at 45 kg/m3 density target
Back cushion core65 mm polyurethane foam at 35 kg/m3 density targetInternal seat support12 mm molded plywood or steel-formed seat pan under foam
Back support shell10 mm molded composite or plywood load-bearing shellArm supportsPolished aluminum or chrome-plated tubular steel loop arms with black pads
Center columnChrome-plated steel telescopic gas lift with 50 mm outer tubeFive-star basePolished aluminum or chrome-plated steel five-star base with 680 mm footprint
CastersBlack nylon twin-wheel swivel casters, 60 mm diameter, with polished forksMechanism coverBlack powder-coated steel synchro-tilt mechanism under the seat
Seam constructionNeat perimeter seam with 8 stitches per 50 mm targetSwivel function360-degree swivel around the central gas-lift column
Height adjustmentPneumatic seat-height lift with 100 mm stroke, controlled by the right-side leverTilt functionBack-tilt mechanism with 98 to 112 degree travel and 14 degree maximum recline
Tilt tension controlRotary tension knob adjusts spring resistance for user weight up to 150 kgTilt lockSingle-position upright lock with release through the under-seat lever
MobilityFive 60 mm twin casters provide omnidirectional movement on hard floors or low-pile carpetFixed arm supportRigid polished loop arms provide continuous forearm support without height or width adjustment
Back supportMid-height padded back supports lumbar and lower thoracic area without headrestAssembly interfaceSeat and back assembly mounts to base through central gas lift and mechanism plate
Floor protectionTwin-wheel casters spread load and reduce point pressure on finished floorsRecline Angle / Lock Reference125° with 3suggested lock positions
Tilt Tension User-weight RangeReference adjustment coverage 120 kgReference Package Count1 set / 2 cartons
Reference Assembly Time40 minutes per setReference Carton Dimensions850× 420× 720 mm
Reference Packaged Gross Weight23 kg/setReference Carton Volume0.26 m³/set
Indicative 20GP Loading135 sets at 85% space utilizationIndicative 40HQ Loading320 sets at 85% space utilization
Executive officeSuits a private office behind a 1600 to 2000 mm executive desk due to its formal black and polished-metal finishMeeting roomAppropriate for conference rooms where users need swivel mobility and a compact mid-back profile
Manager workstationFits daily computer work for one user at a 720 to 760 mm high deskReception or counseling areaFormal slim appearance works for visitor consultations without a bulky high-back silhouette
Hard-floor officeRecommended for tile, wood, laminate, and low-pile carpet with 60 mm twin castersSingle-shift commercial useBest suited to 8-hour daily business use by staff and visitors up to 150 kg
Recommended Matching Desk Size2.4 m executive deskReference Daily Use Duration8 hours/day; confirm by ergonomic testing
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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 × 1010 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

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

Recommended user weight capacity150 kg
Net weight18 kg
Seat foam density45 kg/m3
Back foam density35 kg/m3
Foam rebound40%
Gas lift service classClass 4, 100 mm stroke
Base static load rating500 kg
Caster rolling durability100,000 cycles
Recommended daily use duration8 hours
Seating capacity1 person
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 upholsteryBlack smooth leather-look facing over padded cushion; material grade requires supplier BOM confirmation
Back upholsteryBlack smooth upholstered panel with stitched perimeter and gently rounded corners
Seat cushion core90 mm polyurethane foam at 45 kg/m3 density target
Back cushion core65 mm polyurethane foam at 35 kg/m3 density target
Internal seat support12 mm molded plywood or steel-formed seat pan under foam
Back support shell10 mm molded composite or plywood load-bearing shell
Arm supportsPolished aluminum or chrome-plated tubular steel loop arms with black pads
Center columnChrome-plated steel telescopic gas lift with 50 mm outer tube
Five-star basePolished aluminum or chrome-plated steel five-star base with 680 mm footprint
CastersBlack nylon twin-wheel swivel casters, 60 mm diameter, with polished forks
Mechanism coverBlack powder-coated steel synchro-tilt mechanism under the seat
Seam constructionNeat perimeter seam with 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.

Swivel function360-degree swivel around the central gas-lift column
Height adjustmentPneumatic seat-height lift with 100 mm stroke, controlled by the right-side lever
Tilt functionBack-tilt mechanism with 98 to 112 degree travel and 14 degree maximum recline
Tilt tension controlRotary tension knob adjusts spring resistance for user weight up to 150 kg
Tilt lockSingle-position upright lock with release through the under-seat lever
MobilityFive 60 mm twin casters provide omnidirectional movement on hard floors or low-pile carpet
Fixed arm supportRigid polished loop arms provide continuous forearm support without height or width adjustment
Back supportMid-height padded back supports lumbar and lower thoracic area without headrest
Assembly interfaceSeat and back assembly mounts to base through central gas lift and mechanism plate
Floor protectionTwin-wheel casters spread load and reduce point pressure on finished floors
Recline Angle / Lock Reference125° with 3suggested lock positions
Tilt Tension User-weight RangeReference 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 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

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

Executive officeSuits a private office behind a 1600 to 2000 mm executive desk due to its formal black and polished-metal finish
Meeting roomAppropriate for conference rooms where users need swivel mobility and a compact mid-back profile
Manager workstationFits daily computer work for one user at a 720 to 760 mm high desk
Reception or counseling areaFormal slim appearance works for visitor consultations without a bulky high-back silhouette
Hard-floor officeRecommended for tile, wood, laminate, and low-pile carpet with 60 mm twin casters
Single-shift commercial useBest suited to 8-hour daily business use by staff and visitors up to 150 kg
Recommended Matching Desk Size2.4 m executive desk
Reference Daily Use Duration8 hours/day; confirm by ergonomic testing
STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1 applicabilityOffice furniture seating dimensions and safety terminology fit dimensional verification of this task chair
EN 1335-2 applicabilitySafety requirements for office chairs are suitable for structural and gas-lift acceptance
EN 1335-3 applicabilityTest methods for office chairs support back, seat, arm, and caster durability verification
EN 1022 applicabilityDetermination of seating stability is applicable to the five-star mobile base
STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1 Office Chairs applicabilityBack, base, arm, swivel, tilt, and caster durability clauses suit commercial seating acceptance
STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3324-2017 applicabilityGeneral wooden furniture technical requirements may apply if the inner shell uses wood-based panels
GB/T 10357.3-2013 applicabilityFurniture mechanical surface and chair strength/durability test methods are suitable for procurement verification
GB/T 27719-2011 applicabilityFurniture hardware quality checks are relevant to casters, gas lift, and mechanism acceptance
Standardized tender description text
This product must meet the following technical requirements:
1. GB/T 3324-2017 applicability: General wooden furniture technical requirements may apply if the inner shell uses wood-based panels;
2. GB/T 10357.3-2013 applicability: Furniture mechanical surface and chair strength/durability test methods are suitable for procurement verification;
3. GB/T 27719-2011 applicability: Furniture hardware quality checks are relevant to casters, gas lift, and mechanism acceptance;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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Product Description

The Black Leather Mid-Back Executive Swivel Office Chair presents a formal executive profile through its black smooth leather-look upholstery, padded seat and back, stitched backrest perimeter, gently rounded corners, and polished metal loop arms. Its mid-back form is balanced by a five-star base, creating a slim, structured appearance suited to professional settings without the visual mass of a high-back chair. The chair measures 620 by 650 by 1010 mm, with 540 mm between fixed armrests, a 90 mm finished seat cushion, a 70 mm padded backrest, and a 240 mm lumbar support zone. Construction combines upholstered cushioning with a metallic support system. The seat uses a 90 mm polyurethane foam core with a 45 kg/m3 density target, while the back uses a 65 mm polyurethane foam core with a 35 kg/m3 density target and 40 percent rebound. Internal support is provided by a 12 mm molded plywood or steel-formed seat pan and a 10 mm molded composite or plywood load-bearing back shell. Arms and base may be supplied in polished aluminum or chrome-plated steel, subject to the selected bill of materials; the upholstery material grade also requires supplier confirmation. A chrome-plated steel telescopic Class 4 gas lift with a 50 mm outer tube and 100 mm stroke connects the seat to a 680 mm footprint five-star base. Black nylon 60 mm twin casters complete the mobile base. Functionality centers on 360-degree swivel, pneumatic height adjustment from a right-side lever, and a steel back-tilt mechanism with 98 to 112 degree travel and a 14 degree maximum recline. A rotary knob controls tilt tension for users up to 150 kg, while an under-seat lever releases a single-position upright lock. The rigid polished loop arms provide continuous forearm support but do not adjust in height or width. The chair has a 150 kg recommended user weight capacity, 18 kg net weight, and 500 kg base static load rating. It is appropriate for private executive offices behind a desk up to 2000 mm wide, conference rooms, manager workstations at desks 720 to 760 mm high, reception spaces, and counseling areas. The casters are intended for tile, wood, laminate, and low-pile carpet, and the product is best suited to single-shift commercial use of 8 hours daily. Procurement teams should note the unbranded model OFC-MB-PL-CR-50 is delivered as one set in two cartons, with 23 kg packaged gross weight, 0.26 cubic meter packaged volume, and 40 minutes reference assembly time. A 20GP container can accommodate 135 sets at 85 percent space utilization. Buyers should confirm base and arm material, upholstery grade, and component alternatives through the final supplier BOM before purchase.

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