CNC Milling Service
Our 3-axis & 5-axis CNC milling center is dedicated to creating complex geometries and features
- Tolerances down to ±0.0002″ (0.005mm)
- Parts as Fast as 1 days
- Aluminium, Steel, Copper, Polymers & More
- 3 & 5-Axis Milling
Why Choose Our CNC Milling Service
Prolean is dedicated to precise drilling, boring, reaming, milling planes, bevels, grooves, surfaces (cams), and tapping in various workpieces with various structures and shapes.
Using Multiaxis -CNC milling machines, we produce high-quality parts based on specified designs for commercial and industrial applications. We are eager to work with you to deliver precise CNC machined parts for your project.
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 quotation as fast as one hour.
Get One Hour Quote
Upload your design or send an email directly to our engineer and get your quotes within as fast as one hour
Your parts will get made once your orders confirmed, besides, your will get real-time updated of the production status from our order tracking system
Receive Your Custom Part
After all parts pass qc inspection, they will be well packed from any transportation accidents. Then, your custom parts are delivered straight to your doorstep
CNC Machining Materials Options
AluminumAluminum 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.
BrassGolden shiny color, low friction, excellent Machinability, and high electrical & thermal conductivity. Brass can be easily machined and the best choice for low-friction applications.
CopperIt offers good strength, hardness, and excellent corrosion resistance with superior heat and thermal conductivity. It also has a very appealing aesthetic.
Titanium40% 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.
AlloysGrade 1 Titanium
Grade 2 Titanium
Grade 5 Titanium（TC4, Ti6Al4v)
Alloy SteelHigh 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.
AlloysAlloy Steel 4130
Alloy Steel 4340
Steel (4140 Alloy)
Steel (1018 Low Carbon)
Tool Steel (A2)
Zinc-Galvanized Low-Carbon Steel
Carbon Steel (1045)
Stainless SteelHigh 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.
AlloysStainless 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)
Cast ironIt offers three to five time’s higher compression strength than steel. Low notch sensitivity, Good Resistance to deformation, excellent anti-vibration, and consistent mechanical properties
- Garolite G-10
- Polyethylene (PE)
- PPSU（Polyphenylene sulfone resins）
- PPS (Polyphenylene)
- PTFE (Teflon）
- polyetherimide (PEI)
- PMMA (Acrylic)
ABSExcellent strength, extraordinary impact, and abrasion resistance with chemical inertness. ABS can be machined easily and is very easy to paint and glue.
AcrylicAcrylic is a lightweight, rigid thermoplastic with optical clarity. It is one of the superior alternatives to glass, offering excellent weather and chemical stability.
DelrinHigh tensile strength, excellent Machinability, Stiffness, wear resistance, creep resistance, and low friction. Overall, Delrin is the ideal replacement for metal.
SubtypesDelrin (30% Glass-Filled)
Garolite G-10High strength to weigh ratio, fire resistive, low thermal expansion coefficient, and water absorption coefficient are entirely free from corrosion risk. Garolite is perfect for insulating parts and electric circuit boards.
FR4FR-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.
NylonMechanical 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.
SubtypesNylon (30% Glass-Filled)
PEEKA 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).
SubtypesPEEK (30% Glass-Filled)
Polycarbonate（PC）Exceptional mechanical properties, including impact strength, toughness, Stiffness, and creep resistance. Because of its transparent nature, Polycarbonate (PC) is a lightweight alternative to glass.
Polypropylene(PP)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, great 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.
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.
PVCExcellent Stiffness, flame resistance, weather resistance, dimensional stability, and chemical inertness. PVC is appropriate for pipelines, medical devices, outdoor appliances, and electrical insulation.
CNC Milling Material Guide
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).
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.
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.
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
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.
Precision Machining Tolerances
CNC Milling Service
Manufacturing Specifications & Capabilities
|Linear dimension||+/- 0.025 mm
+/- 0.001 inch
|ISO 2768 Medium|
|Hole diameters (not reamed)||+/- 0.025 mm
+/- 0.001 inch
|ISO 2768 Medium|
|Shaft diameters||+/- 0.025 mm
+/- 0.001 inch
|ISO 2768 Medium|
|Part size limit||950 * 550 * 480 mm
37.0 * 21.5 * 18.5 inch
|ISO 2768 Medium|
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
Part cleaning and Protection
Quality Inspection Report
What is CNC Milling?
CNC milling is an abbreviation for Computer Numerical Control milling. So, the milling operations are numerically controlled by the computers here. CNC milling machines, like cutting and drilling machines, use rotary tools to cut away at a workpiece into the desired shape. Because a computer controls the movement of tools and other machine parts, there will be no human error, resulting in precise parts with tight tolerance. CNC milling can work with any manufacturing material, from steel to plastic.
The instructions for part creation are generated when we load the CAD file into the CNC milling machines. The computer controls the coordinates and positions along with the tool’s movement. CNC milling is used in many industries Such as automotive, aerospace, defense, Medical, and more.
Principle of CNC Milling
The milling process begins with the positioning of the workpiece and tools. Next, the workpiece is inserted into a holding device, and tools are inserted into the spindle. The CAD file determines the milling direction (horizontal or vertical). Once the tool and workpiece placement is complete, a program is edited and executed. The tools are now moved to create the desired shape based on the instructions.
The milling cutter tools move through the multiple axes to create the parts where several operations other than cutting might be needed, such as drilling holes and slots. A milling cutter can move along multiple axes and make several shapes, slots, holes, and other impressions. Milling machines usually have four directions for operations X, Y, Z, & W. The horizontal movement is represented by X and Y. The Z axis represents vertical movement, whereas the W axis represents diagonal movement across a vertical plane.
Different types of CNC Milling
There are four common types of CNC milling operations. Plane, face, angular, and form milling are all options. These milling operations are selected during manufacturing based on the work piece’s shape requirements.
Face milling uses a tool with teeth on its periphery and face. The peripheral teeth cut the workpiece, and the face teeth finished the surface. The plane of the workpiece is positioned at a right angle to the tool axis.
In Angular milling, the cutting tool is placed in a way that makes a specific angle to the workpiece surface to create a design-angle cut, such as a groove or a dovetail. It is generally applicable when Milling planes are neither parallel nor perpendicular to the tool axis.
The milling of irregular surfaces like curve planes is accomplished by form milling with the help of a special cutter called a formed cutter. Various complex parts needed to be created convex, concave, hemispherical, or other complicated shapes, Thanks to formed milling.
Plain milling, also known as surface milling, is the most commonly used type of milling in which the milling cutter axis is parallel to the surface being milled. It is the best method when a large amount of material needs to be removed.
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What is the lowest thickness I can implement into my design to prevent warpage?
We recommend a minimum thickness of 0.5mm for metal and 1mm for plastic. The value, however, is heavily dependent on the size of the parts to be manufactured. For example, if your parts are much smaller, you may need to increase the minimum thickness limit to prevent warpage, and for large parts, you may need to lower the limit.
What is a 5-axis CNC machine?
Five-axis CNC machines can move through 5-axes, allowing the operator to simultaneously mill over five sides of a workpiece.The A, B, and C axes rotate separately from the X, Y, and Z axes. The machine’s configuration or CAD design determines which two of the three additional rotational axes are used.
What kind of CNC milling equipment do Prolean use?
We have rapid prototyping facilities at prolean that include high-end 3-axis, 4-axis, and 5-axis CNC machining centers from Haas and JingDiao.
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