Chinese High Performance PEEK CNC Machining Turning Milling
Custom PEEK components for robotics, pick-and-place systems, and packaging machinery. 5-axis machining, full CMM inspection, and material traceability. Request a DFM review in 2 hours.
STEP / STP / IGS / X_T accepted · NDA available
Why Choose PEEK for Automation?
| Requirement in Automation | PEEK Advantage | Quantitative Evidence | Alternative (Metal / Other Plastic) |
| High-speed reciprocating motion | Low inertia due to low density (1.32 g/cm³) | 70% lighter than steel → 40% less drive torque needed | Aluminum (2.7 g/cm³) – heavier, higher inertia |
| Lubricant-starved or dry-running conditions | Self-lubricating (low coefficient of friction: 0.28–0.35 against steel) | Reduces maintenance intervals by up to 60% in linear guides | Bronze – requires oil; POM – lower HDT (heat deflection) |
| Wide thermal range in cleanrooms / ovens | Excellent dimensional stability (CTE: 1.2–1.6 × 10⁻⁵ /°C up to 150°C) | Maintains ISO 5 clearance fit from ambient to 120°C | Nylon 6/6 – absorbs moisture → swells; Stainless – heavier |
| Electrical insulation in sensor housings | High dielectric strength (19–22 kV/mm) and volume resistivity >10¹⁵ Ω·cm | Prevents stray current interference in proximity sensors | Ceramic – brittle; FR4 – poor impact resistance |
How We Translate Material Properties into Reliable Parts
Complex Geometries, One Setup
- We use 5-axis simultaneous CNC machining centers (Hermle and DMG MORI) to machine PEEK components with undercuts, deep blind holes, and thin-wall sections (down to 0.8 mm thickness) in a single clamping operation.
- Benefit to you: Eliminates cumulative fixturing errors – critical for parts with multiple locating features (e.g., mounting flanges + precision bore) that interface with other automation modules.
PEEK-Specific Toolpath & Cooling Strategy
- PEEK’s low thermal conductivity (0.25 W/m·K) means heat concentrates at the cutting edge. We use:
- Polished diamond-coated carbide tools with optimized rake angles to reduce built-up edge.
- Through-spindle coolant (oil-based, 5-bar pressure) to maintain chip evacuation and control local temperature rise within ±2°C, preventing stress whitening or micro-cracks.
- Result: Achieved surface finishes of Ra 0.8 μm on sealing surfaces and ±0.005 mm on critical dowel pin holes – verified in-process.
Environmental Control for Thermal Stability
- All machining and inspection are performed in a temperature-controlled shop (22°C ± 1°C) . Since PEEK’s CTE is ~5× that of steel, this environment ensures that room-temperature measurements correlate directly to your equipment’s operating baseline.
The following is the details of the principal measurement instruments.
| Instruments name | Abbr. | Brand | Country | Original factory Calibration Frequency |
| Coordinate Measuring Machine | CMM | Zeiss | Germany | Once/Six months |
| Profile Projector | PP | KEYENCE | Japan | Once/Six months |
| Height Tester | HT | TESA | Switzerland | Once/Six months |
| Digimatic Micrometer | DM | Mitutoyo | Japan | Once/Six months |
| Digimatic Calipers | DC | Mitutoyo | Japan | Once/Six months |
High-end engineering plastic PEEK NC machined parts have excellent mechanical properties, good self-lubrication, chemical resistance, flame retardancy, peel resistance, abrasion resistance, strong nitric acid resistance, and radiation resistance. LELAND Technology also uses these parts for medical human bone tissue, and the medical industry uses more PEEK machined parts than before. They can entirely replace metal parts, with lighter weight and good chemical resistance.
With the development of Chinese technology, China’s high-performance PEEK CNC turning and milling has gained a worldwide reputation. Today, the functions and performance of Chinese brand PEEK precision parts are also very good, and the cost-efficiency is very high. After processing, we can ensure that the accuracy meets high requirements, the tolerance is +/- 0.01mm, and the surface flatness tolerance is +/- 0.02mm.
If you need China’s high-performance PEEK CNC CNC machining services, please feel free to send me emails or messages.
In LELAND technology, all our test and measure equipment is imported. Each of our 5 axis CNC equipment is qualified with imported Reinshaw measuring systems. When machining, our system finds improper processes or any mistakes to prevent scrapped parts and save lots of time.
The measure equipment room is kept at a constant temperature and humidity (22°C-24°C, 45%-65% humidity) to make sure all the measurements are precise.
Leland Tech has more than 17 years of CNC machining service experience. We can help customers produce customized CNC parts based on their 2D engineering drawings (PDF files with all dimensions and tolerances) and 3D engineering drawings (Stp. or Step. File). We can also help customers choose suitable processing materials according to customer requirements, and solve technical problems such as surface flatness, strict tolerance requirements, and assembly adaptability.
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