Auxiliary Power Unit (APU) Components
Precision-machined components engineered for reliable performance in auxiliary power systems.
Martinic manufactures high-precision machined components for auxiliary power units, supporting aircraft starting, backup power, and environmental control functions.
These parts operate in high-thermal, high-rotational, and pressure-intensive environments where dimensional stability and material integrity are critical. Produced on advanced 5-axis machining centers and high-performance turning platforms, APU components are delivered with full assembly and testing support.
Key Features
- Machined from super alloys including Inconel 625/718, A-286, and Custom 465
- Ultra-tight tolerances to ±.0002”
- Complex geometries via 5-axis palletized machining
- Full-rate production and prototype capability
- In-house assembly, balancing, and spin testing
- Proven on Parker, Collins, and Pratt & Whitney APU platforms
Our Capabilities
Martinic supports APU component production across a range of material, geometry, and production-volume requirements.
- Solids, castings, and forgings
- Multi-axis milled housings and structural components
- Precision-turned shafts and rotational components
- Integrated bearing, liner, and bushing assemblies
- Plating and Balancing and spin-tested assemblies options per aerospace specification
All configurations are validated through CMM inspection and in-process statistical controls to ensure consistent dimensional and metallurgical performance.
Put Our Capabilities to Work
Partner with Martinic for APU components engineered for thermal stability, rotational precision, and production reliability.