Precision Aluminum CNC Turning Services
CNCALPARTS provides precision CNC turning services focused exclusively on aluminum alloys. By dedicating our facility to aluminum, we optimize cutting parameters, tool selection, and workholding specifically for the material's thermal properties and chip behavior.
Our facility supports prototype, low-volume, and batch production for industries requiring high-performance aluminum components, such as robotics, automation, and precision electronics.
- Precision Tolerance
- ±0.01 mm
- Max Diameter
- Ø300 mm
- Surface Roughness
- Ra 0.8–3.2 μm
CNC Turning Capabilities
We utilize advanced CNC lathes and turn-mill centers to produce accurate, complex rotational parts. Our setup focuses on maintaining tight tolerances and high-quality surface finishes required for functional assembly and aesthetic applications.
| Capability | Specification |
|---|---|
| Material Focus | Aluminum Alloys Only |
| Common Grades | 2011, 6061, 6063, 6082, 7075, 2024 |
| Max Turning Diameter | Ø300 mm |
| Max Turning Length | 500 mm |
| Tolerance (General) | ±0.05 mm |
| Tolerance (Precision) | Down to ±0.01 mm |
| Surface Roughness | Ra 0.8–3.2 μm |
| Threading | M1.6 and above |
| Production Volume | 1–10 (Prototype), 10–500 (Low-Volume), 500+ (Batch) |
| Inspection | CMM, Micrometers, Thread Gauges, Roughness Testers |
Aluminum-Specific Turning Expertise
Turning aluminum requires a different approach than turning ferrous metals. Because aluminum has high thermal conductivity and a different coefficient of expansion, we focus on four critical areas.
Chip Control
Using specific insert geometries and coolant pressures to manage long, stringy chips that can mar surface finishes or cause tool failure.
Deformation Control
Aluminum is prone to distortion under clamping pressure. We design custom soft jaws and collets to secure thin-walled or fragile parts without crushing or warping.
High-Speed Machining
We utilize high-RPM spindles and specific feed rates to achieve superior surface finishes directly off the machine, often reducing the need for secondary polishing.
Thread Integrity
We maintain strict control over thread profiles and pitch diameters to ensure smooth, binding-free assembly for fasteners and connectors.
Parts We Manufacture
Our turning services are tailored for components that require high dimensional stability and precise fitment. Typical aluminum parts include:
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Shafts and Spindles
High-concentricity components for precision drive systems.
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Bushings and Sleeves
Tight-tolerance bearing housings and spacers.
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Threaded Connectors
Fittings and couplings requiring precise M-series or custom threads.
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Flanges and Adapters
Rotational components for optical and modular framing systems.
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Custom Standoffs
Precision spacers for PCB mounting and structural assembly.
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Manifold Components
Internal fluid path parts requiring clean, burr-free bores.
Material Selection for Performance
We machine the full spectrum of aluminum alloys. Choosing the right alloy is critical for the function of your turned part.
6061-T6
Industry StandardExcellent machinability, good corrosion resistance, and accepts anodizing well.
7075-T6
High StrengthHigh strength-to-weight ratio. Used for structural, high-stress components where steel-like strength is required at a lower weight.
2011
High-Speed TurningSpecifically designed for high-speed automatic screw machining. Provides the best surface finish and easiest chip breakage for complex threaded parts.
2024
Fatigue ResistantHigh fatigue resistance, often used in aerospace and high-performance applications.
Quality Control & Surface Finishing
Precision turning is only as good as the final inspection. We verify every batch against your technical drawings.
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Dimensional Reporting: We provide First Article Inspection (FAI) reports and full dimensional data upon request.
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Surface Finish: We offer bead blasting for a uniform matte look, or brushing and polishing for cosmetic requirements.
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Anodizing: We coordinate clear, black, and color anodizing, as well as hard anodizing for increased wear resistance on bearing surfaces or threads.
Why We Focus Only on Aluminum
You may ask, "Do you machine steel or brass?" The answer is no. We specialize exclusively in aluminum CNC machining.
By limiting our scope to one material, we eliminate cross-contamination risks and keep our machines, tooling, and inspection equipment calibrated specifically for aluminum. This focus translates to more stable processes, fewer dimensional errors, and consistent lead times for your projects.
Request a Quote
To receive an accurate quote, please provide your 3D model (STEP, STP, or X_T) and 2D engineering drawing (PDF) containing tolerances and surface finish requirements.
Our engineering team reviews every RFQ to identify potential manufacturing challenges before production begins.
We specialize in aluminum. If your project requires high-precision aluminum turning, we are ready to support you from prototype to production.