PEEK CNC Machining Service
XC Machining provides precision PEEK CNC machining services for custom prototypes and high-performance production components. Known for its exceptional heat resistance, mechanical strength, chemical resistance, and wear performance, PEEK is widely used in aerospace, medical, automotive, semiconductor, and industrial applications requiring reliable performance under demanding conditions.
PEEK in CNC Machining
Polyether Ether Ketone (PEEK) is a high-performance engineering thermoplastic widely used in CNC machining for its excellent mechanical strength, thermal stability, and resistance to chemicals and wear. It maintains useful mechanical properties at elevated temperatures and offers a lightweight alternative to metals in selected demanding applications.
| Alloys available | Unfilled PEEK, Glass-Filled PEEK, Carbon-Filled PEEK, Bearing-Grade PEEK |
| Price | $ |
| Lead time | Under 10 days |
| Wall thickness | 0.75 mm |
| Tolerances | ±0.125 mm (±0.005 in) |
| Max part size | 200 x 80 x 100 cm |
Machined PEEK Properties
Glass-Filled PEEK (PEEK GF30)
Glass-filled PEEK contains approximately 30% glass fiber reinforcement to improve stiffness, strength, and dimensional stability. It is suitable for structural brackets, precision housings, valve components, and mechanical parts requiring greater rigidity and resistance to deformation.
Carbon-Filled PEEK (PEEK CF30)
Carbon-filled PEEK typically contains around 30% carbon fiber reinforcement, providing increased stiffness, improved thermal conductivity, and better dimensional stability compared with unfilled PEEK. It is widely used for aerospace components, industrial equipment parts, and high-performance structural applications.
Advantages and Limitations of PEEK CNC Machining
PEEK is widely used in precision CNC machining because of its exceptional thermal stability, mechanical strength, and chemical resistance. Understanding its advantages and limitations helps manufacturers select the right PEEK grade for aerospace, medical, semiconductor, and high-performance industrial components.
- Excellent Heat Resistance
PEEK maintains useful mechanical properties at elevated temperatures, making it suitable for demanding thermal environments. - High Mechanical Strength
PEEK offers excellent strength, stiffness, and durability for precision structural and mechanical components. - Outstanding Chemical Resistance
PEEK resists a wide range of chemicals, solvents, and industrial fluids under suitable operating conditions. - Good Wear Resistance
PEEK provides reliable wear performance, particularly in bearing-grade formulations designed for sliding applications. - Excellent Dimensional Stability
PEEK offers low moisture absorption and good dimensional stability, supporting precision components and tight-fitting assemblies.
- High Material Cost
PEEK is significantly more expensive than common engineering plastics such as ABS, nylon, and polycarbonate. - Specialized Machining Requirements
PEEK requires suitable cutting tools, machining parameters, and temperature control to achieve consistent dimensional accuracy. - Tool Wear in Reinforced Grades
Glass-filled and carbon-filled PEEK grades can cause increased cutting tool wear because of their abrasive reinforcement fibers. - Thermal Expansion
Although PEEK offers good dimensional stability, temperature changes can still affect part dimensions and machining tolerances.
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PEEK CNC Machining FAQs
1. Why Is PEEK Used for CNC Machining?
PEEK is widely used in CNC machining because of its excellent heat resistance, mechanical strength, chemical resistance, and dimensional stability. It is suitable for manufacturing precision components used in aerospace, medical, semiconductor, and demanding industrial applications.
2. Which PEEK Grade Is Best for CNC Machining?
The best PEEK grade depends on the application. Unfilled PEEK offers excellent chemical resistance and electrical insulation, glass-filled PEEK provides improved stiffness, carbon-filled PEEK offers enhanced rigidity and dimensional stability, while bearing-grade PEEK is designed for low-friction and wear-resistant components.
3. Is PEEK Difficult to CNC Machine?
PEEK can be CNC machined effectively using suitable cutting tools and optimized machining parameters. However, its high material cost, thermal behavior, and the abrasive nature of reinforced grades require careful process planning to achieve consistent quality.
4. Can PEEK Be CNC Machined to Tight Tolerances?
Yes. PEEK can be machined to precise dimensions using controlled machining processes, stable workholding, and appropriate cutting tools. Achievable tolerances depend on the material grade, part geometry, wall thickness, and operating temperature.
5. What Are the Common Applications of PEEK CNC Machined Parts?
PEEK CNC machined parts are commonly used in aerospace assemblies, medical instruments, semiconductor equipment, automotive systems, chemical processing machinery, and industrial components. Typical parts include bushings, bearings, seals, valve seats, electrical insulators, and precision mechanical components.