Precision Nylon (PA) CNC Machining Services
PRECI5 delivers tight-tolerance PA6 and PA66 machining solutions engineered for demanding industrial automation, robotics, and medical equipment. We mitigate moisture absorption and thermal expansion risks using calibrated 5-axis Mazak machining and climate-controlled quality verification.
Managing Moisture Absorption & Dimensional Tolerances
Nylon (polyamide) delivers superior mechanical strength, sliding performance, and wear resistance. However, PA materials are inherently hygroscopic, drawing ambient moisture until reaching equilibrium. Moisture saturation causes measurable volumetric growth and softens the polymer matrix.
| Property | Metric Value (Approximate) | Machining Impact |
|---|---|---|
| Density | 1.13 – 1.15 g/cm³ | Lightweight structural damping |
| Tensile Strength | 70 – 90 MPa | High load-bearing capacity; requires sharp cutting edges |
| Water Absorption (24h) | 0.5% – 1.5% | Dimensions shift if parts are unsealed in high humidity |
| Service Temperature | -40°C to 120°C | Requires thermal expansion clearance during design |
| CTE (Thermal Expansion) | 80 – 100 × 10⁻⁶ / K | Demands controlled tool-path heating to avoid deflection |
*Values represent unreinforced, standard conditions. Different PA grades and moisture saturation states vary significantly.
PA6 vs. PA66 CNC Machining Comparison
Selecting the correct polyamide grade depends on mechanical load, required dimensional retention, and ambient working temperatures.
PA6 (Cast / Extruded)
Optimal Toughness & Damping- Tensile Strength: High (70 - 80 MPa)
- Stiffness / Rigidity: Moderate
- Moisture Absorption: Higher (~1.5% in 24h)
- Wear Resistance: Excellent
- Thermal Stability: Standard (Up to 105°C continuous)
PA66 (Extruded)
Enhanced Hardness & Rigidity- Tensile Strength: Higher (80 - 90 MPa)
- Stiffness / Rigidity: Superior
- Moisture Absorption: Moderate (~0.8% in 24h)
- Wear Resistance: Very Good
- Thermal Stability: Improved (Up to 120°C continuous)
Our Nylon CNC Machining Capabilities
Equipped with 114 production units, our Shenzhen facility operates multi-axis Mazak machining centers with high-speed spindles and micro-positioning precision of 0.003 mm.
| Capability | Main Equipment | Travel Range (mm) | Max Spindle Speed | Precision Level |
|---|---|---|---|---|
| 5-Axis Machining | Mazak C600 | 900 × 900 × 700 | 24,000 rpm | ±0.003 mm |
| 4-Axis Milling | Mazak VCN-430AL | 560 × 430 × 510 | 12,000 rpm | ±0.005 mm |
| Turn-Mill Multi-Tasking | Mazak QTC100MY | X 300 / Z 500 | 6,000 rpm | ±0.005 mm |
| High-Precision CNC Turning | Mazak QTE100 | X 300 / Z 300 | 6,000 rpm | ±0.003 mm |
Thermal Management
High-speed cutting with light feeds mitigates friction heat buildup, preventing surface softening, localized melting, and micro-cracking during deep cuts.
Custom Geometry Tooling
We use polished-flute, razor-sharp carbide and diamond tooling designed specifically for polyamide to eliminate burrs and gummy chip recutting.
Climate-Controlled Metrology
Measurements are conducted in clean, temperature- and humidity-stabilized inspection bays to eliminate atmospheric expansion errors.
Certified Process Control & Traceability
PRECI5 operates under triple certification—ISO 9001, IATF 16949, and ISO 13485. From prototype validation to recurring production runs, our metrology lab ensures parts match your engineering specifications before dispatch.
Frequently Asked Technical Questions
Send Material Grade + Drawing for Review
Contact our technical team in Shenzhen. We will evaluate your 2D/3D drawings, assess moisture-tolerance variables, recommend PA6 vs. PA66 stock, and provide a competitive quote within 24 hours.
Request Nylon Machining Quotation
Attach your CAD model and note whether dry-as-machined or moisture-conditioned tolerances apply.