CNC Milling Service
Precision CNC milling services for complex parts in aluminum, steel, titanium, and engineering plastics.
Overview
PiPrecision delivers precision CNC milling services for complex parts in aluminum, steel, titanium, and engineering plastics. Our multi-axis milling centers handle everything from simple brackets to intricate aerospace components requiring tight tolerances and superior surface finishes.
With ISO 9001-certified quality systems and more than six years of export experience, we combine advanced manufacturing technology with rigorous inspection protocols. We support one-piece minimum orders, CAD quote review within 24 hours, and production lead times from two weeks, subject to drawing review.
Whether you need rapid prototyping, low-volume production, or high-volume manufacturing, our milling capabilities scale with your project requirements.
Capabilities
Standard 3-axis vertical machining for prismatic parts
Rotary table integration for complex geometries
Full 5-axis for intricate contours and reduced setups
Up to 15,000 RPM spindle speeds for aluminum
Capable of machining HRC 60+ hardened steels
Features as small as 0.1mm in diameter
Quality Assurance
- CMM (Coordinate Measuring Machine) inspection
- Surface roughness measurement (Ra, Rz)
- First Article Inspection Reports (FAIR) available
- Statistical Process Control (SPC) for production runs
Specifications
| Maximum Work Envelope | 800mm × 600mm × 500mm (31.5" × 23.6" × 19.7") |
| Positioning Accuracy | ±0.005mm (±0.0002") |
| Repeatability | ±0.003mm (±0.00012") |
| Standard Tolerance | ±0.05mm (±0.002") per ISO 2768-m |
| Precision Tolerance | ±0.005mm (±0.0002") available |
| Drawing-Reviewed Tolerance | ±0.005mm (±0.0002"), subject to drawing review |
| Surface Finish (Standard) | Ra 1.6 μm (63 μin) |
| Surface Finish (Fine) | Ra 0.4 μm (16 μin) |
| Surface Finish (Mirror) | Ra 0.1 μm (4 μin) |
| Minimum Feature Size | 0.1mm (0.004") |
| Minimum Wall Thickness | 0.5mm (0.020") |
Published capabilities are indicative and subject to drawing review.
Equipment
Primary Machines
- HAAS VF-4SS — 5-Axis, 12,000 RPM, 30-tool ATC
- DMG MORI DMU 65 monoBLOCK — 18,000 RPM, integrated 5-axis
- HAAS VF-2SS — 3-Axis, 12,000 RPM, high-speed machining
- Brother Speedio S1000X1 — 16,000 RPM, rapid positioning
Inspection Equipment
- Hexagon Global Classic SR CMM — Coordinate measuring machine
- Mitutoyo Surftest SJ-210 — Surface roughness tester
- Vision Measurement System — For small features
Materials
| Material | Grades | Applications |
|---|---|---|
| Aluminum | 6061-T6, 7075-T6, 5052, 6082-T6, etc. | Aerospace, electronics, automotive |
| Stainless Steel | 303, 304, 316, 17-4PH, 420, etc. | Medical, marine, food processing |
| Steel | C45, Q235, 1018, 4140, A2, D2, etc. | Tooling, industrial, automotive |
| Titanium | Grade 2, Grade 5 (Ti-6Al-4V) | Aerospace, medical implants |
| Brass & Copper | C360, H59, C464, C110, T2, etc. | Electrical, decorative, plumbing |
| Engineering Plastics | ABS, POM, PEEK, PC, Delrin, Nylon, etc. | Medical, electrical insulation |
Sample Parts
Why Choose PiPrecision
- 6+ yrs Export Experience
- 24h CAD Quote Review
- 1 piece Minimum Order
- 2 weeks Production Lead Time
Need CNC Milling Service?
Initial review is targeted within 24 hours for a complete RFQ. Orders from one prototype are supported.
Request QuoteCNC Milling Service FAQs
Process-specific answers from the PiPrecision Engineering and Quality teams.
What part sizes can PiPrecision CNC mill?
The published 800 × 600 × 500 mm figure is a machine travel or work-envelope reference, not a guaranteed finished-part size. Usable capacity is smaller when fixtures, rotary axes, tool length and access, part loading, material weight, feature depth, or inspection access consume the envelope. Send the complete part and stock dimensions; engineering must confirm the machine, setup, reach, workholding, and tolerances for every large, thin, heavy, or distortion-sensitive part.
Answer owner: PiPrecision Engineering Team
When is 5-axis milling preferable to 3-axis or 4-axis machining?
Indexed 3+2 machining positions the part and cuts with the rotary axes locked; simultaneous 5-axis machining moves linear and rotary axes together during the cut. Either can reduce setups for multiple faces, compound angles, or difficult tool access and may improve relationships between features made in one setup. Simultaneous 5-axis work adds programming, collision-control, toolpath, and verification demands, so it is not automatically more accurate or economical. PiPrecision selects the method from geometry, tolerance, surface, quantity, and inspection needs.
Answer owner: PiPrecision Engineering Team
Can PiPrecision mill thin walls and distortion-sensitive parts?
Thin walls may be feasible, but wall thickness alone does not predict stability. Material condition and residual stress, wall height and unsupported length, stock shape, tool pressure, heat, workholding, and removal sequence all matter. Engineering may recommend balanced roughing, intermediate stress relief, temporary supports, sacrificial features, revised corner radii or tolerances, or an agreed restrained-versus-free-state inspection method. Submit the full geometry rather than relying on a generic minimum-wall figure.
Answer owner: PiPrecision Engineering Team
Which materials can be CNC milled?
Common candidates include aluminum, stainless steel, carbon and alloy steels, titanium, brass, copper, and engineering plastics. Feasibility is confirmed by exact grade, temper or heat-treatment condition, stock form, dimensions, quantity, required certificates, and final finish. Substitute grades are not assumed. Plastics may also require moisture-conditioning, temperature, stress-relief, or inspection-state requirements because they can move with humidity, temperature, and machining stress.
Answer owner: PiPrecision Engineering Team