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Mid-Back Black Faux Leather Ergonomic Office Task Chair Specifications

OF-CH-MB-PU-660

Code：56FD4QV1
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2026-08-13 10:02Popularity: 48
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OF-CH-MB-PU-660

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PRODUCT MODULE 01 / 06

Physical Dimensions

Automatic mm / inch conversion · Core engineering specifications

Overall dimensions660 x 640 x 1035 mm
Seat width525 mm
Seat depth450 mm
Backrest width415 mm
Backrest height550 mm
Maximum seat height510 mm
Maximum armrest height above seat265 mm
Five-star base diameter660 mm
Caster diameter50 mm
Arm pad length250 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

Recommended user weight capacity136 kg
Net weight16 kg
Seat height adjustment stroke70 mm
Swivel rotation range360 degrees
Backrest tilt angle12 degrees
Seat foam density50 kg/m³
Seat foam thickness80 mm
Backrest foam thickness50 mm
Upholstery abrasion resistance100000 double rubs
Seat Foam Density / Rebound Reference45 kg/m³ / 65%
PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

Seat and back upholsteryBlack 1.0mm thick PU faux leather, matte finish
Seat core paddingHigh-density molded polyurethane foam, waterfall front edge
Backrest core paddingContoured high-density polyurethane foam with lumbar support curve
Five-star base1.5mm thick chrome-plated steel, polished finish
Gas lift columnClass 3 steel pneumatic cylinder, chrome finish
Tilt mechanism2.5mm thick stamped steel plate with tension adjustment knob
Armrest supportsReinforced nylon height-adjustment posts, padded PU arm pads
Casters50mm diameter twin-wheel nylon casters, black finish
Internal seat frame12mm thick molded plywood support board
Seam stitching8mm stitch pitch, matching black polyester thread
Seat Internal Support Board Thickness14 mm bent plywood or equivalent support board
Backrest Internal Frame Thickness14 mm bent plywood/composite reinforced frame
PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Pneumatic seat height adjustment70mm stroke, activated by side lever under seat, locks at selected height
Height-adjustable armrests70mm vertical adjustment range, locks at desired height for ergonomic arm support
Backrest tilt function12-degree maximum recline, stepless tension adjustment to match user weight
Upright tilt lockLocks backrest in fully upright position for focused task work
360-degree swivelFull rotation around central gas lift for easy access to desk surfaces
Rolling mobilityDual-wheel casters roll smoothly on both carpet and hard floor surfaces
Waterfall seat edgeCurved front seat edge reduces pressure on back of thighs during extended sitting
Maximum depth at full tilt710 mm
Recline Angle / Lock Reference125° with 3suggested lock positions
Tilt Tension User-weight RangeReference adjustment coverage 120 kg
Rotation / Mobility Configuration360° swivel with 5-caster multidirectional movement
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

Private office workstationSuitable for 8 hour daily seated work at standard height office desks
Open plan office task seatingFits standard cubicle and benching desk layouts with compact 660mm width
Home office workspaceCompact footprint fits small home desks, easy to assemble for residential use
Conference room auxiliary seatingFormal upholstered aesthetic suitable for meeting room temporary seating
Co-working space hot desksDurable PU leather surface resists stains and easy to clean between users
Reception desk seatingPolished chrome base and black finish presents professional appearance for visitor areas
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 1335-1:2020Applicable for office chair dimensional, safety and strength requirements for task seating
EN 1022:2018Applicable for office chair stability testing under standard use conditions
EN 12520:2015Applicable for furniture strength, durability and safety requirements for seating
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 performance and durability testing standards
STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016Applicable for furniture dimension measurement and tolerance verification of office chairs
GB/T 39600-2021Applicable for minimum formaldehyde emission limits for furniture upholstery and components
Standardized tender description text
This product must meet the following technical requirements:
1. GB/T 3326-2016: Applicable for furniture dimension measurement and tolerance verification of office chairs;
2. GB/T 39600-2021: Applicable for minimum formaldehyde emission limits for furniture upholstery and components;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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PDF · OF-CH-MB-PU-660

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Product Description

The YUXIANG Mid-Back Black Faux Leather Ergonomic Office Task Chair, model OF-CH-MB-PU-660, presents a polished, professional silhouette tailored for both commercial and residential seated work environments. Its compact, proportional form is anchored by a polished chrome-plated five-star base fitted with black twin-wheel casters, paired with a contoured mid-height backrest and structured padded seat that aligns with standard desk configurations. The matte black PU upholstery is complemented by chrome-finished metal components and padded armrests, delivering a sleek, understated aesthetic that blends seamlessly across formal and casual workspaces. Constructed for consistent daily use, the chair features 1.0mm thick matte black PU faux leather upholstery over high-density molded polyurethane padding for both the seat and backrest. The seat incorporates a waterfall front edge designed to reduce pressure on the backs of the thighs, while the contoured backrest is shaped with a built-in lumbar support curve. Its structural components include a 1.5mm thick chrome-plated steel five-star base, Class 3 steel pneumatic gas lift cylinder, 2.5mm thick stamped steel tilt mechanism, reinforced nylon armrest support posts, 12mm thick molded plywood internal seat frame, and 50mm twin-wheel nylon casters suitable for both carpet and hard floor surfaces. Functional features support flexible, ergonomic use across varied work tasks. A side-activated lever controls pneumatic seat height adjustment with a 70mm stroke that locks at the user’s selected height, while armrests offer 70mm of vertical adjustment to lock into place for customized arm support. The backrest delivers a maximum 12-degree recline with stepless tension adjustment to match user weight, plus an upright lock to hold the backrest in position for focused work. Full 360-degree swivel around the central column allows easy access to surrounding desk surfaces, and the dual-wheel casters enable smooth, quiet movement across flooring types. This chair is well suited for private office workstations supporting 8 hours of daily seated work, open plan cubicle and benching layouts, compact home office workspaces, conference room auxiliary seating, co-working hot desks, and reception areas where a professional, easy-to-clean seating surface is prioritized. For procurement planning, note that each unit ships in two cartons, with an assembly time of 40 minutes per set. The chair has a recommended user weight capacity of 136 kg, and its compact footprint supports efficient space utilization for bulk orders. The durable, stain-resistant faux leather surface simplifies maintenance between users in high-turnover shared spaces.

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