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Aisle Spreadbar

Critical reinforcement components within aircraft cabin floor structures that distribute loads evenly across the aisle to maintain rigidity and alignment. Capable of withstanding vibration, bending, and stress.

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Process

CNC Milling, 5-Axis Machining, Wire EDM, CNC Turning.

Materials

Aluminum 7075-T6, Titanium Grade 5, Stainless Steel 17-4PH, Inconel 718, PEEK

Tolerance

±0.005mm

Finishes

Hard Anodizing, Passivation, Electropolishing, Powder Coating

Precision CNC Machining

Precision Aisle Spreadbar Engineering with Thorough Quality Inspection

Aisle spreaders are made to maintain structural stability in aircraft cabins while minimizing added weight. Produced using precision CNC and multi-axis machining, these parts ensure dimensional accuracy and alignment.

Each component undergoes strict testing for load-bearing capability and vibration resistance to guarantee consistent performance under demanding flight conditions.

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Materials for Aisle Spreadbars

Materials are selected to balance weight, fatigue strength, and corrosion resistance, ensuring structural reliability.

Aluminum 7075-T6 Titanium Grade 5 Stainless Steel 17-4PH Inconel 718 PEEK (Polyetheretherketone)
Surface Finishes

Finishing options improve longevity, appearance, and surface protection in the aircraft environment.

  • Hard Anodizing: Enhances surface hardness and corrosion resistance.
  • Passivation: Protects stainless steel surfaces from oxidation and contaminants.
  • Electropolishing: Smooths surfaces to improve fatigue life and cleanliness.
  • Powder Coating: Provides protective, wear-resistant coatings with aesthetic appeal.
Applications

Aerospace Aisle Spreadbars

Manufacturing structural cross-members ensuring seat frame rigidity and effective under-seat luggage retention with lightweight aluminum alloys.

  • Structural Cross Tubes

    High tensile strength preventing lateral seat frame deformation.

  • Spreadbar End Fittings

    Precision milled interfaces for secure seat leg attachment.

  • Luggage Restraint Profiles

    Durable geometry acting as effective under-seat baggage stops.

  • Support Connecting Collars

    Robust machined clamps for additional central structural bracing.

Capabilities

Our Aisle Spreadbar Machining Capabilities

Aisle spreadbars are produced using multi-axis machining facilities that maintain an accuracy of ±0.005mm. Each component undergoes advanced dimensional inspection, surface roughness testing, and fatigue validation.

Full traceability, first-article inspection, and documentation ensure that every spreader meets strict aerospace standards for strength, alignment, and consistent long-term structural reliability.

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Technical Parameters

Values

Dimensional Tolerance

±0.005mm

Flatness/Parallelism

≤ 0.01mm per 100mm

Max Part Envelope

600 x 500 x 300mm

Min Wall Thickness

0.6mm (material dependent)

Surface Roughness

Ra 0.8um typical (machined), Ra 0.2um (polished)

Finish Thickness

5–25µm (per specification)

Docs & Certs

FAI, material certs, full lot traceability

Process

Process & Quality

DFM Review – We analyze critical datums, load paths, and propose weight-saving ops.
CAM & Fixturing – 5-axis strategies minimize re-clamps and preserve datum integrity.
In-Process Checks – SPC sampling and probing keep parts on target.
FAI & CMM – Full ballooned reports with 3D model-to-part correlation.
Traceability – Heat numbers and finishing lots linked to each serial.
Recommend

Related Aircraft Cabin Components

  • Seat Track Assemblies

    Distribute seating loads across the cabin floor structure.

  • Floor Beams

    Provide key structural support beneath the cabin.

  • Cabin Mounting Frames

    Ensure alignment between interior modules and floor systems.

FAQ

Frequently Asked Questions

These are our common FAQs. If you need specifics: such as machines, quoting, lead time, shipping, quality process, packaging, or payment, please email info@aerocncparts.com.

Our engineers will reply with clear, detailed information.

Can aisle spreaders be tailored for different aircraft floor layouts?
Yes, dimensions, hole patterns, and mounting interfaces can be customized to fit unique aircraft configurations and floor systems.
What is the expected lead time for producing aisle spreaders?
Typical production time is 4 to 7 business days, depending on the complexity and finishing requirements. Expedited machining options are available.
Do buyers receive complete documentation and inspection reports?
Yes, all parts come with dimensional reports, FAI documentation, and complete material traceability for aerospace compliance.
Can prototype and small-batch production be accommodated?
Yes. Low-volume and prototype runs are supported to validate the design and ensure a proper fit before proceeding to large-scale manufacturing.
Are there specific finish options for aesthetic consistency in cabin interiors?
Yes, powder coatings and anodized finishes can be color-matched to interior specifications for visual uniformity.
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Full material traceability, 100% inspection, AS9100-ready process

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