Why Centrifugal Casting Is Ideal for Aerospace Bearing, Sleeves and Bushings
Key Takeaways:
- Aerospace centrifugal casting produces dense, uniform metal with fewer internal defects for critical rotating components.
- Improved grain structure and reduced porosity increase durability and fatigue resistance in high-speed bearing applications.
- Tight tolerances and near-net shapes support performance requirements for aerospace bearing materials like 440C, 17-4PH and other hardenable stainless grades.
- Common specifications include AMS 5352 & AMS 5398 along with many other AMS specifications for the alloys and heat treatments required.
Aerospace bearing sleeves and bushings don’t get second chances. They run at high speeds, carry continuous loads, and operate in environments, where even minor material inconsistencies can lead to failure. That’s why engineers turn to aerospace centrifugal casting when performance and reliability are non-negotiable.
Built for Structural Integrity
Centrifugal casting creates a dense, uniform metal structure that you can’t replicate with conventional methods. As the mold rotates, heavier, cleaner metal is forced outward while impurities migrate toward the inner diameter, where they can be removed during machining. The result is a casting with consistent grain structure and minimal internal defects. For bearing sleeves and bushings, that translates directly to predictable performance under load.
Strength That Holds Up Under Rotation
High-speed rotation exposes any weakness in material quality. Centrifugal casting reduces porosity and improves grain alignment, which increases fatigue resistance and overall durability.
When combined with proven aerospace bearing materials — including 440C (and modified versions) for wear resistance, and precipitation-hardening grades like 15-PH and 17-4PH for high strength and toughness — you get components that maintain strength and stability over long service cycles.
Precision That Supports Performance
Bearing performance depends on tight tolerances and consistent wall thickness. Centrifugal casting produces near-net shapes with uniform geometry, reducing the amount of material that needs to be machined while improving dimensional control.
At Delta Centrifugal®, we carry that precision through final machining and inspection. The goal isn’t just to meet spec. It’s to deliver components that perform exactly as intended in service. For aerospace applications, that level of control isn’t optional. It’s the baseline.