High-Precision CNC Machining of PEEK Parts | Engineered for Reliability in Automation Equipment
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 |
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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