CAPABILITIES
CNC Drilling Service
We offer CNC drilling for prototypes and production parts, with quotes from a real engineer in one hour and production in as little as one day.
- Multi-Axis (3, 4, or 5-axis) Drilling
- Works with Aluminum, Steel, Copper, Polymers, etc
- Certified quality with detailed inspection reports
- Customized CNC machining and drilling
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What is CNC Drilling?
CNC drilling is a computer-controlled machining process that uses a rotating drill bit to create round holes in materials like wood, metal, plastic, or composites.
Unlike manual drilling, CNC drilling utilizes 5-axis drilling software to automate the operation. This software directs and positions the drill bit, making the process more efficient and precise.
The machine creates clearance holes, which are used for assembly with fasteners such as bolts or screws. This automation ensures faster, more accurate drilling compared to traditional manual methods.
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Why Choose Our CNC Drilling Service
Professional CNC Drilling Solutions: Prolean offers CNC drilling services for both small and large complex parts.
Advanced Drilling Equipment: Equipped with upright, bench, and radial drill presses, capable of drilling precise holes up to 7 cm in diameter.
Versatile Material Processing: Can drill metals, alloys, and polymers, including aluminum, steel, and copper.
Comprehensive Quality Assurance: Provides certificates of compliance, raw material certificates, and detailed inspection reports.
5-Axis Drilling Centers: Enables turning parts and drilling cross holes both on and off-center.
Efficient Coolant Systems and Drill Range: High-pressure coolant systems and a wide range of HSS, carbide, and inserted drills ensure high-quality results.
Comparing Different CNC Drilling Types
| Factors | CNC Drilling | Reaming | Micro Drilling | Center Drilling |
| Primary Use | Initial hole creation in solid materials | Finishing and sizing pre-drilled holes | Drilling tiny holes | Preparing holes for accurate drilling |
| Hole Diameter Range | Up to 80 mm | Up to ~80 mm | Less than 0.1 mm (often much smaller) | Typically, up to 25 mm |
| Tolerance | ±0.001” (hole placement), ±0.0002” (repeatability) |
IT9 to IT7 (dimensional accuracy) |
Typically ±0.002 mm or finer | ±0.01 mm |
|
Surface Roughness |
Ra 50 – 12.5 μm | Ra 3.2 – 0.8 μm | Ra 0.8 μm or finer | Ra 10 – 5 μm |
| Typical Tools | Twist drill, deep hole drill | Hand reamers, machine reamers | Micro drills, often with special coatings | Center drills, spotting drills |
| Material Compatibility | Metals, plastics, composites | Metals, plastics, composites | Metals, plastics, ceramics | Metals, plastics, composites |
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 Immediately
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.
CNC Drilling Material Options
- Low density, non-ferrous, and does not rust easily
- Used in the manufacture of aircraft and automobiles. Most suitable for application in constructing frames of buildings and other structures and machinery.
- Strong and does not corrode, suitable for use in hospitals and the kitchen.
- It is found in almost all industrial machines and equipment.
- Flexible and electrically conductive, applied to electrical conducting and ornamental purposes.
- They are used in plumbing parts and many other mechanical products.
- Lighter than steel, it is used to construct aircraft and other equipment and medical tools and equipment.
- They are also used in other superior auto parts and marine merchandise.
- High electrical conductivity is used in wires and electrical contacts.
- They are primarily used in heat exchangers and also in plumbing systems.
- Clear and hard-wearing, used to create showcases and billboards.
- Applicable to protective covers and other decorative components.
- Thermochromic and optically translucent.
- She was employed in products such as car parts and other robust containers, lenses of spectacles, and safety glasses.
- It is rugged and can also withstand chemical attacks.
- They are used to produce car parts and electronics. Most often used in furniture and covers.
- Chemically resistant and with low friction, it makes seals and gaskets.
- Extensive preparation of non-stick surfaces in many other industries.
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Finishing Options For CNC Drilling
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
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.
CNC Drilling Applications
Automotive
Prolean employs CNC drilling in automotive manufacturing to create engine parts, chassis components, and fastener holes, guaranteeing that every vehicle is assembled and built to last.
Aerospace
Prolean’s CNC drilling produces accurate holes in aircraft parts for fastening, cable management, and airflow. Drilled materials include aluminum, titanium, and composites, and the drilling is done to specific safety and performance standards.
Electronic
For electronics, our experts make holes in circuit boards and enclosures to mount components, cool devices, and make electrical connections.
Energy
Prolean drills components for turbines, piping, and structural frames in the energy sector are crucial for the effectiveness and reliability of energy supply systems.
CNC Drilling FAQ’s
Technical FAQ’s
What is the best practice for drilling a straight hole?
When preparing to drill a straight rolling, ensure the workpiece is well secured so it does not shift or bend. For high accuracy, the drilling depth should generally not exceed four times the diameter of the drill bit.
Is it possible to thread holes through a drilling operation?
No, drilling alone only smooths the surface of the material, and there are still no threads on it. To make internal threads, one has to use a tapping tool to make threads on the walls of the hole.
What is the maximum depth that CNC drilling can achieve?
The depth that a CNC machine can drill depends on the type of drill and its capability to drill to a certain depth. Typically, a CNC drill can drill to a depth five times the drill bit’s diameter without distorting the hole. Peck drilling methods are generally used for deeper holes. With these more advanced methods, the depth can sometimes reach up to 400 times the diameter of the hole.
General FAQ’s
What is the difference between CNC Drilling and Thread Tapping?
CNC drilling makes holes in the workpiece using drill bits for further processing or joining. Thread tapping, in contrast, aids in making internal threads in these holes by use of a tap tool to use screws or bolts in the construction process.
What are the benefits of using CNC drilling?
CNC drilling is a relatively precise, faster, automatic, and flexible machining process. Therefore, it suits high repeatability and quality requirements across all sectors.
What types of parts can be made using CNC drilling?
CNC drilling can make various parts, from simple plates with a few holes to complex components with intricate drilling patterns. It produces everything from electronic enclosures to automotive parts and aerospace components.
3 Ways to Ensure Perfection
Standards
Metals: ISO-2768 fH (fine)
Plastics: 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
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
Technology Overview
What is CNC Drilling?
CNC (Computer Numerical Control) Drilling is a widely used subtractive manufacturing technology that involves the use of computers to control machine tools. These machine tools, in the case of CNC drilling, are drills that are used to create holes of different diameters and depths in a variety of materials.
Principle of CNC Drilling
At the core of CNC drilling is a computer-controlled system that directs the drill bit’s movements. The drilling process begins with a digital 3D design of the part, created using CAD (Computer-Aided Design) software. The 3D design is then converted into machine instructions using CAM (Computer-Aided Manufacturing) software. These instructions, or G-codes, control the movement, speed, and positioning of the drill bit.
Advantages of CNC Drilling
CNC Drilling machines can have multiple axes of movement. Most commonly these are 3-axis machines, but there are also 4 and 5-axis machines that offer even more flexibility, allowing the drill bit to approach the workpiece from different angles and in different positions.
One of the key advantages of CNC drilling is its precision. It can achieve very tight tolerances, often as tight as ±0.0005″ (0.0127mm). This high degree of accuracy is consistent across all parts produced, regardless of the production volume.
Another advantage is the ability to drill complex and intricate patterns that would be difficult or impossible to achieve manually. This makes CNC drilling suitable for a wide range of industries, including aerospace, automotive, electronics, medical, and more.
See why customers dig us
Yesterday, I received the parts for my musical instruments. These are incredibly consistent and accurate.
The delivery timing and quality of the CNC machining service amaze me. I would recommend Prolean with my other business friends too. Thank you!
-Ema Alves, Owner at Conserve the Sound
Prolean has been manufacturing numerous customized components for my metal-workshop machines for the past two years, and I have found that they are excellent with their CNC machining services.
I am delighted with the level of quality they offer and the precision of the customized machine parts.
-Mason Lucas, Purchasing manager at Alpha Manufacturing
ProLean has consistently provided me with excellent milling service using their 5-axis CNC machine. I've worked with many contract manufacturers, but other than ProLean, I've never found accurate tolerance on my parts.
We were able to satisfy our client's needs thanks to Prolean's prompt reaction. Additionally, I frequently found that their engineers are always willing to innovate creatively to deliver top-notch service.
-Tanesha Adesina, Technical manager at Bossard Technology
I needed a quick prototype for my research, but I had no idea that their CNC machines were so sophisticated and could produce it in just three days. The prototype was quite precise and fell within the tolerances of the CAD I provided.
Thumbs up! Not just selling, nothing else count for them; Service Service Service, first!
-Jason Barrett, Individual Mechanical Engineer
I have been collaborating with ProLean to produce PCB boards for our business For the last year. Continuous technical assistance and communication with the manufacturing.
Engineers and mechanics help us continuously satisfy our customers' expectations. I hope that this collaboration continues for a very long time.
-Rugen Thakur, Mechanical Engineer at Cipsa- Tech.
The heat sink was marvelous, within the critical tolerance, and the surface finish was excellent. The fan position, seal, and fin structure all performed as intended. I'll tell my friends and other electronics companies about your service.
I appreciate your exceptional communication and CNC-Machining service.
-Blake Henderson, Product Designer at MechaTronix,
It's challenging to describe the Prolean in a few words, but the three stand out: Fantastic, Amazing, and Perfect.
The best addition to our firm has been Prolean. With their cutting-edge 5-axis CNC machine, they are providing the service of replacing and installing new components in our pharmaceutical development industry with accuracy and cleanliness as their top concerns.
-Jose Gaonkar, Mechanical Engineer at Cadila Pharmaceuticals
I purchased several custom CNC-machined parts for mechanical tools from Prolean, and I want to remark that their quality and accuracy were far superior to those of some of the more prominent machine tool manufacturers.
Prolean's engineers could explain everything to me in a language I could comprehend, even though I am not a mechanist and may have asked the wrong questions.
-Evert Wagner, Product Designer at HYDAC Supplier
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