Welding for Landing Gear & Undercarriage Components

A typical landing gear system includes the main gear assemblies, nose or tail gear, struts, wheels and tyres, brakes, axles, torque links, drag braces, retraction mechanisms, steering components, and attachment fittings. The exact layout varies by aircraft type. Each part has a defined load, movement, or energy-absorption function, so any welding work must be evaluated against the component’s material, design, and approved repair requirements.

Landing gear is commonly classified by arrangement as tricycle, conventional or tailwheel, tandem, and quadricycle gear. Tricycle gear uses nose and main wheels, while conventional gear uses a tailwheel with main wheels forward. Tandem and quadricycle layouts place wheel assemblies differently to suit aircraft configuration and load distribution. The applicable welding approach depends on the specific component, material, joint design, and engineering documentation.

Landing gear components are commonly made from high-strength steels, titanium alloys, aluminum alloys, and, in some applications, magnesium alloys or composite-adjacent assemblies. High-strength steel is widely used for heavily loaded structural members, while titanium can provide strength with reduced weight. Material identification is essential before welding because filler selection, preheat, shielding, heat input, and post-weld requirements differ significantly between alloys.

Some landing gear and undercarriage components may be weldable, but suitability must be determined by the aircraft manufacturer’s repair data, material condition, component history, and applicable aviation requirements. Highly stressed, heat-treated, or safety-critical parts can have strict limitations or may require replacement rather than repair. A technical review should confirm the joint design, welding procedure, inspection method, and any post-weld heat treatment before work begins.

The best process depends on the alloy, wall thickness, joint geometry, tolerance, and heat sensitivity. TIG or GTAW offers precise manual control for many aerospace-grade metals, while laser welding can reduce the heat-affected zone on delicate or tightly toleranced parts. Micro-GTAW supports small features and thin sections. Process selection should follow a weldability assessment and the customer’s engineering or approved repair requirements.

Distortion is managed by using controlled heat input, appropriate fixturing, balanced weld sequencing, suitable joint preparation, and welding parameters matched to the material and section thickness. Laser and micro-welding processes can be useful where a narrow heat-affected zone is needed. Trial welds and fixture development help verify dimensional stability before larger production runs. Inspection after welding confirms whether critical dimensions remain within specified tolerances.

Yes. Wintegral Engineering supports prototype development and small-batch welding for teams validating new designs or preparing parts for limited production. Support can include application review, process selection, welding trials, fixture design, parameter optimisation, and production execution. This approach helps identify weldability and dimensional-control issues early, before a component moves to repeat manufacturing or an in-house welding cell.

Pricing is provided after technical evaluation because each welding requirement has different material, geometry, access, fixture, inspection, and volume considerations. Prototype, low-volume, and repeat-production jobs may require different levels of process development and setup. Wintegral assesses the component and recommended process before preparing a quotation, with multiple process-based options available where appropriate to balance performance, turnaround, and cost.