Tight Tolerance Aluminum CNC Machining
Precision aluminum parts require more than high-end machinery. We control temperature, cutting strategy, workholding, datums, and inspection to maintain dimensional stability and surface integrity, with tolerances down to ±0.01 mm.
±0.01 mm
Precision tolerance
0.02 mm
Flatness capability
100%
Aluminum focus
Material specialization
We machine aluminum. Only aluminum.
Engineering reality
Precision is a controlled process, not a machine specification.
Aluminum responds quickly to temperature changes, internal stress, and cutting forces. Our aluminum-only workflow is built around managing those variables throughout the part lifecycle.
Thermal stability
We monitor the machining environment and account for heat buildup during long cycles so finished dimensions remain aligned with the CAD model.
Stress relief
Incremental material removal helps control warping in large pockets and thin-wall sections instead of releasing too much stress in one pass.
Controlled workholding
Custom soft jaws and vacuum fixtures secure components without the clamping distortion that standard vices can introduce.
Strategic tolerancing
We recommend tight tolerances for critical features such as bearing fits, dowel holes, and mating surfaces, rather than over-tolerancing every dimension.
Capabilities
Built for repeatable precision
From complex prototypes to batch production, our process is organized around consistent performance for every unit in the run.
| Capability | Typical range |
|---|---|
| Materials | Aluminum alloys only: 6061, 7075, 6082, 2024, and others |
| Precision tolerance | Down to ±0.01 mm |
| Hole tolerance | Down to ±0.01 mm |
| Flatness / parallelism | Down to 0.02 mm |
| Position tolerance | Down to 0.02 mm |
| Surface roughness | Ra 0.8–3.2 μm |
| Maximum milling size | 1000 × 600 × 500 mm |
| Maximum turning diameter | Ø300 mm |
| Minimum wall thickness | 0.5 mm |
| Minimum hole diameter | Ø1.0 mm |
Designed for assembly performance
Machining strategies for demanding aluminum components
Our Shenzhen facility supports precision components for robotics, automation, and optical equipment, where alignment and repeatability matter.
Complex 5-axis machining
Fewer setups reduce alignment opportunities and improve positional accuracy on complex geometries.
Thin-wall machining
Vacuum workholding and light-pass finishing help prevent vibration and deformation in housings and enclosures.
Deep pocket milling
Chip evacuation and coolant flow are managed to reduce re-cutting and protect surface finish.
Precision threading
Thread position and pitch accuracy support high-vibration assemblies and repeated maintenance.
Quality control
Inspection is part of the process, not an afterthought.
Every production run follows a documented inspection process. We do not rely on visual checks for tight-tolerance parts.
Documented verification
CMMs, bore gauges, pin gauges, and surface roughness testers verify critical dimensions against your technical drawings.
Drawing review
Critical dimensions and tolerances are reviewed against your STEP or PDF files.
In-process control
Machining variables and key features are monitored throughout production.
FAI and final reports
First Article Inspection and final dimensional reports document conformity before shipment.
Project suitability
A fit for precision-led programs
Product development teams
High-precision prototypes that accurately represent the final production part.
Automation and robotics firms
High-strength, lightweight brackets, frames, and motor housings.
Optical and electronics companies
Tight-tolerance enclosures and mounting plates that interface precisely with other components.
When we may not be the right fit
If your project requires high-volume, low-cost commodity parts where tolerance is secondary to price, another supplier may be more suitable. Our focus is precision, structural integrity, and long-term supply stability.
Discuss Your RequirementsRequest a quote
Give our engineers the information to assess your part accurately.
Send your files and project details for feedback on manufacturability, tolerance strategy, and cost optimization before a formal quote.
Recommended RFQ package
- 01. 3D model in STEP or STP format
- 02. PDF technical drawing with critical dimensions and tolerances
- 03. Aluminum grade and surface treatment, such as anodizing or bead blasting
- 04. Expected batch quantity
CNCALPARTS
We Machine Aluminum. Only Aluminum.