INDUSTRY COMPONENT

Five-Point Base

Five-point base for ergonomic office chairs providing stability and mobility.

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Component Specifications

Definition
A five-point base is a structural component of ergonomic office chairs, typically featuring five radially arranged legs that connect to a central hub. It provides a stable foundation that distributes user weight evenly, prevents tipping, and supports the chair's swivel and height adjustment mechanisms. Designed with industrial engineering principles for optimal load distribution and durability.
Working Principle
Utilizes a pentagonal geometry to distribute weight evenly across five contact points, enhancing stability through a wider support base than traditional four-point designs. The central hub houses the caster sockets and gas lift cylinder interface, allowing 360-degree rotation and vertical adjustment while maintaining structural integrity under dynamic loads.
Materials
Typically injection-molded nylon (PA6 or PA66 with 30% glass fiber reinforcement) or die-cast aluminum (ADC12 alloy). High-end versions may use reinforced polypropylene or magnesium alloys.
Technical Parameters
  • Weight 1.8-3.2 kg
  • Diameter 600-750 mm
  • Leg Thickness 8-12 mm
  • Load Capacity 120-150 kg
  • Caster Socket Type 11 mm standard or 13 mm heavy-duty
Standards
ISO 7173, DIN EN 1335, ANSI/BIFMA X5.1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Five-Point Base.

five-point chair base office chair base ergonomic chair component swivel chair base chair stability base nylon chair base cast aluminum base Five-Point Base Five-Point Base in Furniture Manufacturing

Parent Products

This component is used in the following industrial products

Ergonomic Office Chair

Industrial-scale manufactured seating solution for workplace ergonomics and comfort.

View Product Details

Ergonomic Task Chair with Lumbar Support

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

View Product Details

Engineering Analysis

Risks & Mitigation
  • Structural fatigue under cyclic loading
  • Caster socket wear leading to instability
  • Material degradation from UV exposure
  • Floor damage from improper caster selection
FMEA Triads
Trigger: Insufficient glass fiber content in nylon
Failure: Leg fracture under dynamic load
Mitigation: Maintain minimum 30% glass fiber reinforcement and implement material certification
Trigger: Improper caster socket tolerances
Failure: Caster wobble or detachment
Mitigation: Implement statistical process control for socket dimensions (±0.2mm tolerance)

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.5mm on critical dimensions, ±1° on leg angular placement
Test Method
ANSI/BIFMA X5.1 cycle testing: 100,000 swivel cycles, 200,000 impact drops from 50mm height

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Related Components

Wheel
A furniture caster wheel is a swiveling wheel assembly that enables smooth movement and positioning of furniture items.
Swivel Fork
Swivel fork is the rotating component in furniture casters that enables 360-degree directional movement.
Ball Bearing
A precision ball bearing component used in furniture casters to reduce friction and enable smooth rolling motion.
Cup Arm
A mechanical component in furniture hinges that connects the hinge cup to the mounting plate, enabling controlled door movement.

Frequently Asked Questions

Why five points instead of four?

Five-point design provides 25% more stability, reduces tipping risk, and distributes weight more evenly across flooring surfaces.

What materials are most durable?

Glass-fiber reinforced nylon offers optimal strength-to-weight ratio, while die-cast aluminum provides maximum durability for heavy-use environments.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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