PEEK CNC Machining

PEEK stands for Polyether Ether Ketone, a high-performance engineering thermoplastic material known for its excellent mechanical, chemical, and thermal properties.

CNC machining can be used to process PEEK, enabling the production of PEEK parts with precise tolerances and intricate geometries.

Save 30% cost on average!

peek cnc machining prototype

Advanced CNC Machining Service for Your PEEK Parts

Are you searching for a dependable Peek CNC machining partner?

Located in China, AT-Machining is a premier peek CNC machining service provider.

Our extensive capacity comprises over 50 state-of-the-art CNC machines, encompassing 3-axis, 4-axis, and 5-axis milling and turning centers. This enables us to deliver exceptional CNC parts that fulfill your precise specifications, regardless of your industry.

Request a quote now for the best peek CNC machining solutions available!

Get precise and versatile machining of PEEK parts with our optimized 3, 4, and 5-axis CNC milling service.

peek cnc machining

Combine lathe and milling capabilities for efficient CNC turning with live tooling, ideal for machining PEEK parts with cylindrical features

Enhance the surface finish of CNC machined PEEK parts through additional finishing techniques like polishing or sandblasting

What is PEEK

PEEK is a high-performing thermoplastic with excellent mechanical, chemical, and thermal properties, well-suited for demanding applications and extreme environments. It’s biocompatible, and parts can be produced with tight tolerances and complex geometries using techniques like injection molding, extrusion, and CNC machining, perfect for high-precision industries

Some of the key properties of PEEK include:

peek components

Most common grade of PEEK

Explore top PEEK grades: unfilled, glass-fiber reinforced, carbon-fiber reinforced, and bearing grade.

Unfilled PEEK offers superior toughness and elongation compared to other grades, making it ideal for custom components requiring water and steam resistance, inertness, and ductility. This FDA-approved material also comes in multiple colors for a pleasing aesthetic finish

30% glass-fiber reinforced PEEK delivers unparalleled strength, stiffness, and thermal insulation. It maintains the toughness of unfilled PEEK, while also reducing expansion rates and increasing flexural modulus. Ideal for high-load structural applications, it provides exceptional stability and electrical insulation

Get the strongest, stiffest, and most wear-resistant material with 30% carbon-fiber-reinforced PEEK. The lightest with maximum reinforcement, it’s ideal for high-demand applications and excels in load-carrying. With superior thermal conductivity, it improves bearing life by dissipating heat 3.5 times faster than unfilled PEEK.

Experience the ultimate in low wear rates, low friction, and superior machinability with bearing grade PEEK. Combining carbon fiber, graphite, and PTFE, it offers the highest PVs and reduces mating part wear, making it perfect for demanding wear applications. The ideal solution for high-performance bearings that require exceptional wear resistance

PEEK Mechanical Properties Chart

To improve the mechanics and mechanical properties of PEEK materials, one can select from various PEEK grades, gain a better understanding of these materials, and choose the one that best fits the project requirements.

Unfilled PEEK Carbon-filled PEEK Glass filled PEEK Bearing grade PEEK
Tensile Strength 100-160 Mpa 140-200 Mpa 150-180 Mpa 100-120 Mpa
Flexural Strength 140-240 Mpa 200-250 Mpa 240-280 MPa 190-210 Mpa
Elastic Modulus 3.6-4.2 Gpa 6-9 Gpa 11-14 Gpa 3.5-4 GPa
Impact Strength 30-50 kJ/m2 20-30 kJ/m2 20-30 kJ/m2 30-35 kJ/m2
Compressive Strength 100-200 Mpa 250-300 Mpa 330-400 Mpa 180-200 Mpa
Vickers Hardness 70-90 HV 90-120 HV 120-140 HV 100-130 HV
Heat Deflection Temperatures (HDT) 150-160°C (302-320°F) 280-290°C (536-554°F) 290-300°C (554-572°F) 250-260°C (482-500°F)

PEEK CNC machining refers to the process of using computer numerical control (CNC) machines to shape, cut, or drill PEEK material into a desired shape or form.

To ensure optimal CNC machining of PEEK materials, it’s essential to address the issue of chips sticking to the tool during the process. Sticking chips can cause tool wear and a reduction in the quality of the machined surface. To mitigate these challenges, appropriate cutting tools, machining parameters, and cooling strategies are critical.

Contact AT-Machining for expert CNC machining of PEEK and other thermoplastics. Our skilled engineers and machinists will tailor high-quality components to your specifications.

peek plastic machining

Benefit of PEEK CNC machining

There are several benefits to CNC machining polyether-ether-ketone (PEEK):

High Precision

CNC machining allows for high precision and accuracy in the production of PEEK parts, making it possible to create complex shapes and features with tight tolerances.


CNC machines can produce a large volume of PEEK parts with consistent quality and dimensional accuracy, ensuring that each part meets the required specifications.

Faster Turnaround

CNC machining can produce parts quickly and efficiently, which can reduce the time and cost associated with traditional manufacturing methods


CNC machines can produce PEEK parts in a wide range of shapes and sizes, making it possible to create customized parts to meet specific design requirements.

Material Properties

PEEK's exceptional properties suit demanding applications and environments. CNC machining produces high-performance parts that leverage these strengths to meet specifications


CNC is an affordable method for low-volume production runs as it has low setup costs and can be automated, lessening the requirement for manual labor.

part design

Optimize Design

Simplifying the design and reducing the complexity of the part can reduce machining time and waste material

material selection

Larger Batch Sizes

Ordering larger quantities of parts can often result in reduced cost per part due to economies of scale

machining parameters

Use Efficient Tool Paths

CNC machines can be programmed to use the most efficient tool paths to reduce machining time and tool wear

supplier selection

Supplier Selection

Selecting an experienced CNC machining company like AT-Machining can produce PEEK parts cost-effectively. A skilled supplier can provide expertise in material selection, part design, and machining optimization to reduce costs.

Gallery of CNC machined PEEK parts

Our manufacturing capabilities serve diverse industries, including medical, aerospace, and marine robotics. We take on projects of any size and offer exceptional service to all customers

Quality is not an act, it is a habit - Aristotle

At AT-Machining, we believe that the best results come from actively implementing quality practices in our manufacturing process. 

CNC Machining PEEK FAQs

Yes,CNC machining is one of the most common methods used to machine PEEK. CNC machining involves using computer-controlled tools to cut and shape the PEEK material into the desired shape and size. The process can produce high-precision, high-quality parts with tight tolerances and complex geometries.

PEEK machining’s precise tolerances depend on factors such as part size, complexity, equipment, and method used. CNC machining is common and can achieve ±0.005 to ±0.010 inches (0.127 to 0.254 mm) tolerances, but experienced machinists may use specialized tooling to achieve tighter tolerances despite PEEK’s hardness and toughness

PEEK, along with high-performance engineering thermoplastics such as PEI, PPS, PAI, and PSU, offers high temperature and chemical resistance, as well as excellent mechanical and electrical properties. These materials find uses in high-strength applications in the aerospace, automotive, and electrical industries. Alternatives may be considered depending on the application due to their similar properties.

Acetal (POM), along with other plastics like acrylic (PMMA), polyethylene (PE), polypropylene (PP), and polycarbonate (PC), are relatively easy to machine due to their good machinability and dimensional stability. However, the ease of CNC cutting depends on the specific application requirements and the equipment and tools used. 

PEEK parts produced by CNC machining are used in aerospace, defense, medical, automotive, and electrical industries. Its high strength, stiffness, and resistance to harsh environments make it suitable for demanding applications, including medical implants and prosthetics.

PEEK is a high-performance material with excellent strength and chemical resistance, while POM is a low-friction, wear-resistant material that is easy to machine and has good dimensional stability. The choice of material will depend on the specific requirements of the application