Aerospace Landing Gear CNC Machining

Precision-Crafted Landing Gear Components

From 300M ultra-high-strength steel struts to titanium trunnions, we machine the critical parts that keep aircraft safe on every touchdown. Delivered with full traceability and AS9100D certification.

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260 ksi
UTS on 300M Steel
±0.001"
Strut Concentricity
100%
Lot Traceability
10K+
Fatigue Cycles
Aerospace landing gear strut machined from 300M steel 300M STEEL · 260 KSI UTS
Why CNC Works AI

Why Your Landing Gear Program Deserves a Dedicated CNC Partner

Landing gear is where structural and safety-critical demands collide. Every strut must absorb impact loads beyond 5g, every axle must resist 1,000+ lb-ft of torsion, and every trunnion must survive decades of pressurization fatigue. Perfect for a single component failure means an emergency landing—or worse—there is no room for "good enough."

We do not just machine landing gear parts. We engineer them: selecting the right alloy heat treatment, programming toolpaths that preserve grain flow, and validating every dimension against aerospace-grade CMM protocols.

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Manufacturing Excellence

What Sets Our Landing Gear Machining Apart

⚙️

Deep-Hole Drilling

Gun-drilled strut bores to L/D ratios over 30:1 with straightness within 0.001" per foot.

🌡️

Austenitize + Marquenched

Proprietary 300M heat treatment delivering 260 ksi UTS with 12% elongation.

📐

5-Axis Simultaneous

Complex strut bores and turbine-disk machining in a single setup—tighter tolerances, fewer errors.

🔍

Fatigue-Test Validation

Every lot sampled through 10,000+ cycle fatigue testing with full S/N curve documentation.

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Component Engineering

Components We Machine for Your Landing Gear Program

Each component below is machined to OEM or MIL-spec requirements, with full process documentation and material traceability.

Aerospace landing gear strut and piston

Landing Gear Struts & Pistons

The strut is the backbone of your landing gear assembly. We machine these from 300M ultra-high-strength steel blanks that are austenitized, oil-quenched, and double-tempered to 260 ksi UTS.

BoreGun-drilled bore tolerances to H7
FinishChrome-plating-ready surface Ra 0.4μm
AlignmentConcentricity ±0.001" over 48"
Grain FlowPreserved via optimized toolpath
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Titanium trunnion and structural fitting

Trunnions & Structural Fittings

Trunnions transfer landing loads into the wing or fuselage structure. Our 5-axis simultaneous machining handles the complex compound angles and internal pockets that conventional 3-axis setups simply cannot reach.

MaterialTi-10V-2Fe-3Al and Ti-6Al-4V ELI
5-AxisProfiling for compound-angle lug bores
IntegritySurface integrity per AMS 4911
Inspection100% FPI and ultrasonic available
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Aerospace wheel and brake housing

Wheels & Brake Housings

Brake housings must dissipate kinetic energy under extreme thermal loads while maintaining structural integrity. We machine these from 7075-T6 aluminum forgings with optimized wall-thinning for weight reduction.

Alloy7075-T6 / 7050-T7451 aluminum
Thin WallMachining to 1.5mm without distortion
ThermalHeat-sink fins ±0.05mm pitch
SurfaceAnodize-ready per MIL-A-8625 Type II
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Torque link and retract actuator

Torque Links & Retract Actuators

Torque links prevent wheel rotation during retraction. Actuators must cycle thousands of times without seal failure. We machine both from 4340 or 300M with precision bores and seal grooves.

Seal GrooveTolerances to ±0.002mm
ThreadingHydraulic ports to UNF-3B
FinishRa 0.2μm on seal lands
TestingFull pressure-test certification
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Custom Solutions

Need a Custom Landing Gear Component Not Listed Here?

We regularly machine locking pins, axle nuts, drag braces, and door actuators for commercial and defense landing gear programs. Send us your drawing—our engineers will respond within 4 hours.

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Material Selection

Materials Engineered for Extreme Landing Loads

Every alloy is sourced from aerospace-certified mills with full mill-test reports and lot traceability.

300M ultra-high-strength steel for landing gear struts

300M Steel

260 ksi UTS, 12% elongation. Austenitized, oil-quenched, double-tempered. The gold standard for landing gear struts.

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Titanium alloy Ti-10V-2Fe-3Al for trunnions

Ti-10V-2Fe-3Al

High-strength beta titanium. 180 ksi UTS with superior fracture toughness. Ideal for trunnions and structural lugs.

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7075-T6 aluminum for brake housings and wheels

7075-T6 Aluminum

83 ksi UTS, excellent fatigue resistance. Forged and solution-treated. Perfect for wheels and brake housings.

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4340 alloy steel for torque links and actuators

4340 Alloy Steel

240 ksi UTS, deep-hardening nickel-chrome-moly. Cost-effective alternative for torque links and actuator bodies.

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Quality Protocol

Our Landing Gear Quality Assurance Checklist

Every part ships only after passing this exhaustive verification protocol.

Dimensional & Material Checks

  • Raw material MTR review and lot traceability lock
  • First-article inspection (FAI) per AS9102
  • CMM dimensional report with 3D point cloud
  • Surface roughness validation per ISO 4287
  • Hardness testing: Rockwell C on every heat-treat lot
  • Chemical composition verification via OES spectrometry

Non-Destructive & Functional Tests

  • Fluorescent penetrant inspection (FPI) per ASTM E1417
  • Ultrasonic testing (UT) for internal discontinuities
  • Magnetic particle inspection (MPI) for ferrous alloys
  • Pressure testing on hydraulic actuator assemblies
  • Fatigue sampling: 10,000+ cycles with S/N curves
  • Final visual inspection under 10× magnification
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Our Process

From Drawing to Delivery: Our Landing Gear Workflow

1

Engineering Review

DFM analysis, material selection, and toolpath simulation completed within 24 hours of drawing receipt.

2

Pre-Production

First-article machining, FAI reporting, and customer approval before any production volume release.

3

Certified Production

AS9100D-controlled manufacturing with SPC charting, in-process CMM checks, and lot segregation.

4

Final Validation

NDT, pressure test, fatigue sampling, and CoC packaging with full material and inspection traceability.

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Buyer Questions

Frequently Asked Questions

300M ultra-high-strength steel is the industry standard for main landing gear struts, delivering 260 ksi ultimate tensile strength with 12% elongation. For weight-sensitive applications, Ti-10V-2Fe-3Al beta titanium offers 180 ksi UTS at 60% of the density. We will recommend the optimal alloy based on your load cycle requirements.

Yes. Every lot is locked to the original mill-test report (MTR) at receipt. Traceability is maintained through machining, heat treatment, inspection, and final packaging. A certificate of conformance (CoC) with material pedigree ships with every order.

We coordinate chrome plating, cadmium plating, phosphate coating, and anodizing through AS9100D-certified subcontractors. All surface treatments are documented in the production traveler and verified on the CoC.

Absolutely. We routinely machine single-piece first articles and small-lot qualification builds (5–50 units) before ramping to production volumes. Our NRE is transparent and quoted upfront.

First articles: 2–3 weeks. Production lots: 4–6 weeks depending on material availability and NDT requirements. Expedited programs are available for AOG or flight-test deadlines.

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Ready to Machine Your Next Landing Gear Program?

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