Editorial Technical Reference

Ergonomic Task Chair with Lumbar Support

This page explains how Ergonomic Task Chair with Lumbar Support is classified within Upholstered Furniture. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Industrial-scale manufactured office chair with adjustable lumbar support for prolonged sitting comfort

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Product Specifications

Technical details and manufacturing context for Ergonomic Task Chair with Lumbar Support

Definition
This ergonomic task chair is manufactured at industrial scale for office and home office environments. It features adjustable lumbar support mechanisms to maintain proper spinal alignment during extended periods of sitting. The chair incorporates multiple adjustment points including seat height, armrests, and tilt tension to accommodate various body types and work preferences. It is designed for mass production while meeting ergonomic standards for workplace seating.

Key parameters include a seat height adjustment range of 420–520 mm (ISO 9241-5), a lumbar support adjustment range of 150–250 mm, seat width of 480–540 mm (ISO 9241-5), seat depth of 450–510 mm (ISO 9241-5), and a maximum load capacity of 150 kg (EN 1335-2). The tilt angle range is 90–135 degrees (EN 1335-2), backrest height is 550–650 mm, and armrest adjustment range is 60–80 mm. The seat foam density is 35–45 kg/m³ (ISO 845), frame material is glass-fiber reinforced nylon (PA66+30%GF, UL 94), gas spring class is 4 (EN 16955), base diameter is 650–700 mm (EN 1335-2), caster diameter is 50–60 mm (EN 12529), and net weight is 18–25 kg depending on options.

Materials on file include polyurethane foam, polyester fabric, steel frame, and polypropylene plastic. The chair is designed for mass production and is intended for use in workplace settings. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.
Working Principle
The chair uses an adjustable lumbar support pad or mechanism that can be positioned vertically and protrude horizontally to provide customized lower back support. A gas lift mechanism enables seat height adjustment, and a tilt mechanism allows reclining. The lumbar support can be moved within a range of 150–250 mm vertically, and the seat height adjusts from 420–520 mm. The tilt mechanism allows the backrest to recline from 90 to 135 degrees. These adjustments work together to accommodate different body types and sitting preferences, promoting proper spinal alignment during prolonged sitting.
Common Materials
Polyurethane foam, Polyester fabric, Steel frame, Polypropylene plastic
Technical Parameters
ParameterTypical rangeNotes & selection driver
Seat Height Adjustment RangeRequired420–520 mmVertical adjustment range from floor to seat surfaceISO 9241-5
Lumbar Support Adjustment RangeRequired150–250 mmVertical travel distance of lumbar support mechanism
Seat WidthRequired480–540 mmWidth of the seating surface at widest pointISO 9241-5
Seat DepthRequired450–510 mmFront-to-back measurement of seating surfaceISO 9241-5
Maximum Load CapacityRequired150 kgMaximum recommended user weightEN 1335-2
Tilt Angle Range90–135 degreesMaximum backward tilt angle from verticalEN 1335-2
Backrest Height550–650 mmIncludes lumbar support zone
Armrest Adjustment Range60–80 mmHeight adjustable armrests
Seat Foam Density35–45 kg/m³Molded polyurethane foamISO 845
Frame MaterialPA66+30%GFGlass-fiber reinforced nylonUL 94
Gas Spring Class4Class 4 for heavy-duty useEN 16955
Base Diameter650–700 mmAluminum or nylon baseEN 1335-2
Caster Diameter50–60 mmDual-wheel casters for hard floorsEN 12529
Net Weight18–25 kgDepends on options

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Lumbar Support Mechanism
    Provides adjustable lower back support with vertical and depth adjustment
    Material: Polypropylene with foam padding
  • Gas Lift Cylinder
    Enables smooth height adjustment of seat
    Material: Steel with hydraulic fluid
  • Seat Cushion Part
    Provides comfortable seating surface with pressure distribution
    Material: Polyurethane foam with fabric cover
  • Five-Point Base Part
    Provides stable support with casters for mobility
    Material: Reinforced polypropylene
  • Adjustable Armrests Optional Part
    Provides forearm support with height and width adjustment
    Material: Polyurethane foam with plastic casing

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Ergonomic Task Chair with Lumbar Support.

adjustable lumbar support office chair ergonomic desk chair task seating with back support

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max user weight: 150 kg (330 lbs) static load
other spec: Seat height adjustment: 40-55 cm, Backrest tilt: 90-120°, Lumbar support adjustment: 5 cm vertical range
temperature: 15°C to 35°C (operational ambient range)
Media Compatibility
✓ Office environments with 8+ hour daily use ✓ Call centers and control rooms ✓ Home office setups with ergonomic requirements
Unsuitable: Industrial manufacturing floors with heavy vibration, particulates, or chemical exposure
Sizing Data Required
  • User height range (cm)
  • Desired seat depth (cm)
  • Required lumbar support height adjustment (cm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Lumbar Support Mechanism Failure
Cause: Fatigue failure of plastic or metal components due to cyclic loading from repeated adjustments, compounded by poor lubrication or material degradation over time.
Gas Lift Cylinder Seal Degradation
Cause: Wear and tear of internal seals leading to gas leakage, often accelerated by contamination, improper use (e.g., excessive side loading), or exposure to temperature extremes.
Maintenance Indicators
  • Audible hissing or squeaking from the gas lift cylinder during height adjustment, indicating seal failure or gas leakage.
  • Visible sagging, misalignment, or inability to maintain position in the lumbar support or seat back, suggesting mechanism wear or structural compromise.
Engineering Tips
  • Implement a regular lubrication schedule for all moving parts (e.g., tilt mechanisms, adjustment levers) using manufacturer-recommended lubricants to reduce friction and wear.
  • Establish and enforce user guidelines to prevent misuse, such as avoiding excessive force on adjustments, maintaining proper weight limits, and keeping the chair clean from debris that can ingress into mechanisms.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 9241-5:1998 (Ergonomics of human-system interaction - Workstation layout and postural requirements) ANSI/BIFMA X5.1-2017 (General Purpose Office Chairs - Tests) EN 1335-1:2020 (Office furniture - Office work chair - Part 1: Dimensions - Determination of dimensions)

Quoted from the published standard.

Manufacturing Precision
  • Caster bore diameter: +/-0.05mm
  • Seat pan flatness: 0.2mm
Quality Inspection
  • Static Load Test (ANSI/BIFMA X5.1)
  • Durability Cycle Test (ISO 24496:2022)

Manufacturers of Ergonomic Task Chair with Lumbar Support

Manufacturer profiles associated with Ergonomic Task Chair with Lumbar Support.

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Frequently Asked Questions

What is the seat height adjustment range?

The seat height adjustment range is 420–520 mm, measured from floor to seat surface, per ISO 9241-5. Verify the exact range for the specific model with the manufacturer.

What is the maximum load capacity?

The maximum recommended user weight is 150 kg, per EN 1335-2. Always confirm the load capacity for the specific model with the supplier.

What materials are used in construction?

Materials on file include polyurethane foam, polyester fabric, steel frame, and polypropylene plastic. The frame material is glass-fiber reinforced nylon (PA66+30%GF) per UL 94. Confirm material details with the manufacturer.

What standards are referenced for this chair?

Referenced standards include ISO 9241-5 for seat dimensions, EN 1335-2 for load capacity and tilt, ISO 845 for foam density, UL 94 for frame material, EN 16955 for gas spring class, and EN 12529 for casters. These are verification references, not proof of certification.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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