CNC Turning Milling Service

Allow multiple operations on a single machine, perfect for high precision parts with complex geometries

  • Tight Tolerance of ±0.0004″ (0.01mm)
  • Parts as Fast as 1 days
  • Aluminium, Steel, Copper, Polymers & More

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Home 9 CNC Turning Milling Service

Why Choose Our CNC Turning Milling Service

We offer Turning and milling services for prototype development to large-scale manufacturing. Simultaneous milling and turning operations can produce complex cones, cylinders, disks, and polygons.

By combining different steps such as drilling, grooving, threading, knurling, boring, and many more. From screws and bolts to high-precision aerospace or automotive parts, all can be created by collaboration with Prolean using CNC turning-milling compound machines.

How to Order Parts?

Get a free quote from a real engineer; once we receive your design, our engineer will review it and send you a quote as fast as one hour.

Get A Quote Within 12 Hours

Upload your design or email our engineer directly and get your quotes as fast as one hour.

Start Production

Your parts will be made once your orders are confirmed. Besides, you will get real-time order updates of the production status from our order tracking system.

Receive Your Part

After all parts pass QC inspection, they will be well packed from transportation accidents. Then, your custom parts are delivered straight to your doorstep.

: We generally evaluate production and provide quotations within six hours. If you need a more urgent quote within 1 hour, please contact us directly through our official WhatsApp account or Skype for immediate communication.

CNC Turning and Milling Materials Options


Aluminum is a superior metal in terms of strength-to-weight ratio. It offers High Machinability, ductility, and thermal & electrical conductivity. Parts with aluminium also become highly resistant to corrosion.
Aluminum (MIC6) Aluminum (2024) Aluminum (5052) Aluminum (5083) Aluminum (6082) Aluminum (6061-T6) Aluminum (6063) Aluminum (7075-T6) Learn more
Golden shiny color, low friction, excellent Machinability, and high electrical & thermal conductivity. Brass can be easily machined and the best choice for low-friction applications.
Brass (360)   Learn more
It offers good strength, hardness, and excellent corrosion resistance with superior heat and thermal conductivity. It also has a very appealing aesthetic.
Copper 101
40% more strength-to-weight ratio than steel, Excellent corrosion resistance, low thermal expansion, and biologically inert. These properties make it perfect for automotive, aerospace, and medical applications.
Grade 1 Titanium Grade 2 Titanium Grade 5 Titanium(TC4, Ti6Al4v) Learn more
Alloy Steel
High mechanical strength, toughness, resistance to wear and fatigue, and sturdiness. In addition to carbon, other alloying elements can be added depending on the needed mechanical and physical qualities.
Alloy Steel 4130 Alloy Steel 4340 Steel (4140 Alloy) Steel (1018 Low Carbon) Tool Steel (A2) m2 d2 20GR Zinc-Galvanized Low-Carbon Steel Carbon Steel (1045)
Stainless Steel
High mechanical strength, Thermal, Wear, and Corrosion resistance. Stainless steel is low-cost and can be machined easily. Parts made from Stainless steel are durable and do not lose that strength over time.
Stainless Steel 201 Stainless Steel 301 Stainless Steel 303 Stainless Steel (304L) Stainless Steel (316L) Stainless Steel (410) Stainless Steel (420) Stainless Steel (440C) Stainless Steel (17-4 PH)   Learn more
Cast iron
It offers three to five times higher compression strength than steel. Low-notch sensitivity, Good Resistance to deformation, excellent anti-vibration, and consistent mechanical properties


Excellent strength, extraordinary impact, and abrasion resistance with chemical inertness. ABS can be machined easily and is very easy to paint and glue.
Acrylic is a lightweight, rigid thermoplastic with optical clarity. It is one of the superior alternatives to glass, offering excellent weather and chemical stability.
High tensile strength, excellent Machinability, Stiffness, wear resistance, creep resistance, and low friction. Overall, Delrin is the ideal replacement for metal.
Delrin (30% Glass-Filled)

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Garolite G-10
High strength-to-weight ratio, fire resistance, low thermal expansion coefficient, and water absorption coefficient are entirely free from corrosion risk. Garolite is perfect for insulating parts and electric circuit boards.
FR-4 is a manufacturing material with strength almost equal to steel and lightweight. It is a perfect fit for making parts for the electrical marine industry since it is flame retardant, has a negligible water absorption coefficient, and is machinable.
Polyethylene (PE)
Polyethylene is known for its malleable properties. It offers a high strength-to-weight ratio, impact strength, chemical inertness, temperature, and weather resistance.
Mechanical properties include high resilience, tensile strength, and fatigue resistance. Nylon is a flexible manufacturing material that is highly resistant to abrasion, heat, chemicals, water, and oils.
Nylon (30% Glass-Filled)

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A versatile engineering material with high mechanical strength. It provides excellent thermal and chemical resistance. Parts from PEEKS are durable and can be operated at an extensive range of temperatures (up to 2600).
PEEK (30% Glass-Filled)

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Exceptional mechanical properties, including impact strength, toughness, Stiffness, and creep resistance. Because of its transparent nature, Polycarbonate (PC) is a lightweight alternative to glass. Learn more
A low-cost material with good Stiffness, impact resistance, and chemical stability. PP also offers excellent wear resistance and elasticity.
PPSU(Polyphenylene sulfone resins)
PPSU is used in various sectors because of its lightweight, high toughness, excellent impact resistance, high heat resistance, chemical stability, transparent color, and wide operating temperature range
PPS (Polyphenylene)
The unique combination of Physical, mechanical, and chemical properties. Excellent strength, rigidity, fatigue endurance, creep resistance, chemical inertness, and a wide range of working temperatures for the fabricated parts make it a perfect choice for electrical applications with high operating temperatures.
PTFE (Teflon)
High chemical inertness, thermal stability, electrical insulation, and corrosion resistance. Teflon is a low-friction substance that is perfect for making non-sticky and sliding parts for various industries. Learn more
polyetherimide (PEI)
Semi-transparent, high strength, rigidity, thermal stability, chemical inertness, and dimensional stability. Parts made from PEI can work for an extended period without stress cracking.
PMMA (Acrylic)
Transparent, lightweight, strong mechanical strength, hardness, thermal stability, and chemical inertness. Transparent nature makes it an excellent alternative to glass.

CNC Machining Material Guide

Turning and Milling Finishing Options

At Prolean, we understand that achieving the perfect finish on a machined part can make all the difference. Every project presents unique demands; perhaps a glossy sheen, a tactile texture, or even a resilient protective layer. With a commitment to craftsmanship, our team ensures that the resulting piece isn’t just functional, but also aesthetically in line with your aspirations. Delve further to discover the array of specialized finishing options we proudly present, curated to elevate the resilience, allure, and performance of each machined component.


As the machined or deburring

The machined or deburring finish is the standard finish where unwanted attach chips are removed with deburring tools, and sharp edges are chamfered to smooth the surface (3.2 μm).

Bead Blasted

Bead blasting produces a matte texture, removing all the marks of machining tools. It applies to ABS, Aluminum, Brass, Stainless Steel, and Steel parts.


Anodizing involves adding an aluminum oxide coating to aluminum and its alloys. The layers, which come in various colors, increase strength and shield the surface from corrosion.

Powder coating

Powder coating is the electrostatically applying of dry powder to the surface. It produces a thin layer providing excellent resistance to wear, corrosion, and abrasion.


Physical rubbing of a metal surface to create a shiny surface is called a polishing surface finish. It increases the reflectivity and does not affect the dimensional stability of parts.


Brushing is achieved by applying an abrasive brush to the metal surface, which produces a unidirectional satin finish. And it is not recommended for highly corrosive materials.

Smooth machining

Smooth machining is done by controlling the machining process, such as feed rate & cutting speed. It minimizes the tool marks and risk of corrosion.


Black oxide finish reduces surface reflectivity and offers mild corrosion protection. It involves adding a thin layer of magnetite to the surface.


Electro-less Nickel Plating

A thin layer of Nickel is created on the surface from a nickel-containing solution without electrolysis. Electro-less nickel plating provides a shiny appearance, excellent hardness, abrasive, wear, and corrosion-resistance to the substrate material.


Provides excellent corrosion resistance property to the aluminum parts with greenish-gold color. It is the low-cost and quick surface finishing approach.


Electroplating increases the hardness of the steel &aluminum parts. It offers excellent corrosion, wears, and abrasion resistance.


Nickel plating

Make the parts super resistive to corrosion. It enhances mechanical strength, hardness, wear resistance, lubricity, and ductility. Nickel plating is applicable in different materials, including Steel, aluminum, copper, and brass.


Enhance the appearance and functionality of the parts. After Passivation, parts of Steel and its alloys become super resistive from corrosion.

Yellow Chromate conversion coating

A shiny appearance with goldish color provides excellent corrosion resistance. It is applied on the surface of aluminum, magnesium, and their alloys. A layer of chromate also enhances the conductivity of parts

PTFE (Teflon) Coating

The Teflon layer on the parts offers excellent corrosion resistance, water resistance, and non-stickiness with a non-reactive surface.

Fine machining

The higher-precision machines produce delicate machining surfaces by utilizing sharper tools and regulating feed rate and cutting speed. Surface roughness up to Ra 0.8 μm can be maintained with smooth machining.

Laser Cladding

Provides excellent corrosion, wear, and abrasion resistance. Laser Cladding is also effective for treating minor surface imperfections such as cavities, tiny cracks, and rust damage.


Provides a random, non-linear texture with a shiny, high gloss finish. However, it might be unable to create sharp corners and pockets


Provides a random, non-linear texture with a shiny, high gloss finish. However, it might be unable to create sharp corners and pockets

3 Ways to Ensure Perfection



For metals, the standard is ISO-2768 fH (fine)

For plastics, the standard is ISO-2768 mK (medium)

Metric threads tolerances:ISO 965-1 standard UN Threads Tolerances: ASME B1.1-2003 standard

knurling: ISO13444:2012 standard Our factory is ISO 9001:2015 certificated

Visual inspection and Protection

Constant visual inspection conditions

Quantification of cosmetic surface quality

Process requirements

Part cleaning and Protection

Quality Inspection Report

Inspection Confirmation

Dimensional confirmation

Appearance confirmation

Quality documentation

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Technology Overview

What is CNC Turning-Milling?

While turning machining only rotates the workpiece and milling machining rotates the cutting tools, turning-milling machining combines both approaches in which both the workpiece and the tools can spin following the demands of the CAD file and input instructions.

A mill-turn center machine is used for the Turning-milling machining, basically, a hybrid system that performs both Turning and milling operations simultaneously without switching the device. Because complex geometries require both processes, this approach eliminates the need for frequent machine switching and streamlines manufacturing compared to the normal CNC machining process.

Both milling and turning tools are included in CNC mill-turning machines, and they are set up so that they can be used simultaneously and quickly under input instructions from a computer.

Use of CNC turn-mill machine

The various components for the automotive, aerospace, defense, medical, and mechanical industry requires geometries that involve both turning and milling operation. The CNC Turn-mill machine is ideal for such cases. However, it might not be cost-effective to use it to manufacture items where one process is sufficient, and the operator might have to cope with a more complicated setup.We recommend the CNC turn-mill is ideal when the milling required on the part is less than 25 %.

Working Principle of CNC Turning Milling

The working bar is fastened to the chuck on the spindle and rotates rapidly when computer commands direct the turning operations. When milling operations are required, it becomes stationary, and the rotating tools begin to move to feed the material.

The CNC turn-mill machine can perform turning, milling, boring, facing, drilling, and many other operations. The rotational direction of the machine that commonly uses the milling head is referred to as the “B-axis” in turn-mill machines. The workpiece is fastened to the milling head, allowing various tool-to-workpiece angles.

There are four standard Axis of movement. X-axis: Movement perpendicular to the Axis of the workpiece, Y-Axis: movement using a live tool or separate milling head perpendicular to the Axis of the workpiece, Z- axis: Movement along the stock axis required when holes need to be drilled in the center of the workpiece, B- Axis: movement around the Axis of the workpiece.

The CAD file is first loaded onto the device, and the program is customized following the drawing. Before beginning the process, the turning-milling operation instructions are provided. Even after that, manual supervision is required to ensure quality. However, it doesn’t need different programming or education for each process—just one program will do.

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Technical FAQ’s

What kind of CNC turn-mill equipment do ProLean's use?

We have a Feeler HT-30SZ, 5-axis mill-turn machine that can mill and turn bar stocks, castings, forgings, billets, and other complicated components while maintaining high accuracy. While Copper, steel, Brass, Titanium, plastic, and many more materials can be used in CNC turning-milling.

What is the smallest thickness I may incorporate into my design to prevent warpage during the turning-milling process?

We offer a minimum thickness of 0.5mm and 1mm for metal and plastic, respectively. However, the value is greatly influenced by the size of the created parts. For instance, you might need to drop the minimum thickness limit for large parts and raise it for much smaller parts to minimize warpage.

General FAQ’s

What are the Advantages of Using the Turning-milling process?

Comparing a turning-milling process to separate milling and turning operations, the combination has many benefits. Turning-milling generates accurate parts using the same machining setup, which reduces production time instead of performing independently, necessitating separate setup, instructions, and tool arrangements. Compared to an individual approach, the single configuration reduces adjustment and fixation time and maintains tight tolerance because handling different machines requires labor and raises the possibility of dimension error.

What parts can be made with the Turning-milling process?

We offer Precision measurement equipment, craft and automotive parts, parallelepiped-shaped parts with threaded holes, and other complex shapes using a CNC turning-milling technique.

What is the key difference between CNC milling and Turning?

The CNC milling method utilizes rotatory tools and a stationary workpiece, whereas the turning process rotates the cylindrical workpiece, and the tool remains stationary to achieve the desired shape.

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