CNC Machined Aero Engine Impellers for Civil Aviation
Ultra-precision aero engine impellers in 7075-T6 aluminum. 5-axis milling and 9-axis mill-turn in one process chain, micro-arc oxidation, dynamic balancing, and 100 percent CMM profile inspection. AS9100D.
Aerospace Parts
Civil aviation aero engine impellers machined from 7075-T6 aluminum: 5-axis blade profiling, 9-axis mill-turn hub and bore finishing in one setup, micro-arc oxidation ceramic coating, dynamic balancing, and full CMM inspection.
Or email drawings to kgl@kglmfc.com
Key Specifications
| Parameter | KGL Capability |
|---|---|
| Material | Aluminum 7075-T6 (AA 7075) |
| Standard tolerance | ±0.005 mm on machined features |
| Blade profile | CMM verified against the 3D model; 100 percent inspection |
| Surface treatment | Micro-arc oxidation (MAO) ceramic coating |
| Dynamic balancing | Balance quality grade per drawing, ISO 21940 terminology |
| Material traceability | Mill certificates and lot traceability per AS9100D |
| Minimum order | No MOQ; 1-piece prototypes supported |
| Tolerance | ±0.005 mm standard on metals, engineering plastics, and carbon fiber composite |
| Process | 5-axis CNC milling, 3+2 milling, CNC turning, EDM as required |
| Inspection | Hexagon / Zeiss CMM with 0.0015 mm accuracy, full first-article reports |
| Certifications | ISO 9001:2015, ISO 13485:2016, AS9100D |
| Capacity | 100+ CNC machines including 11 five-axis centers |
| MOQ | No MOQ; 1-piece prototypes supported |
| Quote | Within 24 hours for complete 2D/3D files |
About This Part
The impeller sits at the front of an aero engine compressor and sets how efficiently the engine moves air. KGL machines each impeller from one billet of 7075-T6 aluminum, an aluminum-zinc alloy chosen for high strength at low weight, so the rotating assembly stays light and dimensionally stable.
A 5-axis machining center follows the twisted blade surfaces directly from the 3D model, with no hand blending. The 9-axis mill-turn center then completes the hub, the bore, and every datum face in a single clamping, so concentricity does not depend on refixturing. After finish machining, the part receives micro-arc oxidation: a ceramic layer grows from the aluminum substrate and adds surface hardness and corrosion resistance, with thickness controlled so bore and hub dimensions stay within tolerance.
Every impeller is dynamically balanced after coating and inspected on Hexagon and Zeiss CMMs. Blade profile and all critical dimensions are inspected at 100 percent, and a first-article report per AS9102 accompanies new programs. Send your drawing for DFM feedback and a quotation within 24 hours.
This part family supports the Aerospace industry. Read how KGL machines parts for that sector, then send your drawing for a quote.
Why Machine It at KGL
Five-Axis Fleet
100+ CNC machines including 11 five-axis centers run complex geometry in single setups, so tolerances do not stack up across refixturing.
Verified Accuracy
±0.005 mm standard on metals, plastics, and carbon fiber composite, verified on Hexagon and Zeiss CMMs (0.0015 mm accuracy).
Fast Prototypes
Engineering feedback with every quotation; prototype parts typically machined in 15 to 25 days.
One Supplier, End to End
Material sourcing, machining, heat treatment coordination, finishing, CMM inspection and export packaging under one roof.
Part-Specific Advantages
- Machined from one billet of 7075-T6 aluminum: high strength and low weight for the rotating assembly.
- 5-axis machining follows the twisted blade geometry straight from the 3D model, with no hand rework.
- 9-axis mill-turn completes the hub, bore, and datum faces in one clamping, keeping them concentric.
- Micro-arc oxidation grows a hard ceramic layer from the substrate for wear and corrosion resistance.
- Each impeller is dynamically balanced and ships with a 100 percent CMM profile and critical-dimension report.
Typical Applications
- Civil aviation engine compressor impellers
- APU and auxiliary turbomachinery impellers
- Test rig and turbopump impellers for propulsion research
- Overhaul and replacement impellers for engine MRO
Commercial Terms
| Commercial | Detail |
|---|---|
| MOQ | No MOQ |
| Quote turnaround | 24 hours for complete 2D/3D files |
| Certifications | AS9100D, ISO 9001:2015 |
| Production lead time | Prototype 7-15 days; production 3-5 weeks |
| Inspection | Hexagon / Zeiss CMM + dynamic balancing + FAI reports |
Common Questions
Why is 7075-T6 used for aero engine impellers?
7075 is an aluminum-zinc alloy with high strength, and the T6 temper gives a stable structure at low weight. That matters on a rotating part because a lighter impeller reduces the load on the shaft and bearings. The micro-arc oxidation coating then adds surface hardness and corrosion resistance without heavy plating.
What does micro-arc oxidation add over conventional anodize?
MAO grows a thicker ceramic layer directly from the aluminum substrate, so it is harder and more wear resistant than a conventional anodic film, and adhesion is excellent because the layer is not a deposited coating. Coating thickness is specified and controlled so finished bore and hub dimensions remain within tolerance.
How do you verify blade profile?
Every impeller is measured on Hexagon or Zeiss CMMs against the 3D model. Blade profile and all critical dimensions are inspected at 100 percent, with a first-article report per AS9102 for new programs.
Why combine 5-axis machining with 9-axis mill-turn?
The 5-axis machine reaches the twisted blade surfaces; the mill-turn center finishes the hub, bore, and datum faces in a single clamping. Keeping the two operations in one process chain preserves concentricity between blades and bore.
What files do you need for a quote?
A 2D drawing with critical dimensions and a 3D model in STEP or IGES. Include the balance quality grade and coating thickness if your design specifies them. You get engineering feedback with the quotation, within 24 hours.
More Aerospace Parts
Other parts KGL machines in this industry. Every card links to its own detail page.
Ready to Machine This Part?
Send your 2D/3D drawings and get a quote within 24 hours. No MOQ for prototypes and small lots.
Request a Quote