CNC machining service in China - High Precision CNC Machining

We Share Information, Tips and Things We've Learned from Our Years in the 5 Axis Parts Machining and Manufacturing Industry.

CNC machining service in China - High Precision CNC Machining

Nov 16, 2022

We offer CNC milling service in China and fabricate custom machining parts.

  • Professional service from 10 to 1000+ parts

  • Over 5000 SQM machining shop at your service

  • Quality guaranteed – Shipping worldwide

  • 50+ materials and 10+ surface finishes

In case you were searching for a trustworthyCNC machining serviceprovider in China, you came to the right address.Your goal is probably to find the best CNC machining parts provider who delivers quality components at an affordable cost? At Jamesli’s CNC shop, we are specialized in milling and turninghigh precision parts. And, that is not all: quotations are issued within two days and production starts fast. Therefore, there are no long waiting times for CNC milling service in Chinaat Jamesli. Furthermore, our operators are flexible and skilled. We are used to ship goods by boat, plane and train (to Europe). And more: we unburden our customers by adding value through product assembly. Nevertheless, Chinese CNC machining services are a good choice for those companies looking to outsource their machining of metal and plastic components.

Table of content:

  1. Why off-shore outsourcing CNC machining to China?

  2. What are the benefits of CNC machining services in China?

  3. CNC milling service.

  4. CNC turning service: precision machining.

  5. Prototype machining and small batch CNC machining.

  6. What does CNC machining stand for?

  7. Materials we process with CNC machining.

  8. Our equipment to fabricate machining parts.

  9. How choosing a CNC machining factory in China?

Why off-shore outsourcing machining to a CNC shop in China?

Why is off-shore outsourcing CNC machining to Chinaa crucial step for many product engineers around the globe?  It has to be said that many worldwide businesses have their components manufactured in China, since few other countries match with China for cost and efficiency. All things considered, in terms of CNC machining services, there are a lot of factories in China and it is often not easy to find the right supplier. In addition, communication is more challenging than it is with domestic supply chains. Not to mention differences in currency, standards, and intellectual property laws, for example.

And yet, when outsourcing your manufacturing to a company like Jamesli, you will benefit from our expertise, working speed and competitive quotes. We are a one-stop shop with over a decade of experience in exporting custom made components. And we have a European-Chinese management. This means, there wont be any problems when working with us. Quotes are issued withing 24 hours, CNC machining starts promptly and goods re only shipped out when accepted by our quality department. Give it a try with Jamesli.

What are the benefits of CNC machining services in China?

CNC machining services in China have several benefits for you. First, the supply chain is very broad and efficient. Next, our operators are skilled and motivated. And yet, they work 10 hours per day. Do you think the distance is a disadvantage? Well, we deliver small series to Europe within one week, if requested. This is including sand blasting, anodizing and laser engraving of text and symbols, for example. But, don’t try to speed up too often. Because, fast fabrication comes at an extra cost and you penalize the quality.

Lets say an average production time for small series is about 3 weeks. At Jamesli we are good at manufacturing custom machined parts. More specific, CNC millingof aluminum and other materials like stainless steel and brass and common steel are among the possibilities. In addition, we fabricate plastic components.

You can count on our high standard and prices are competitive. Don’t hesitate to drop us an email with your inquiry. One of our sales engineers will answer you request within 24 hours. And not to forget, we offer CAD services and engineering support as well. When you let us make the drawings you can rest assured the parts will be designed and manufactured in the best possible way.

CNC milling service.

CNC milling is one of the CNC machining services we offer. More specific, we fabricate parts in China with high precision. You might think the cnc machining process looks similar to drilling, however, the two manufacturing process are definitely not the same. Drilling is only suitable for axial processing. Other axial cutting processes are making holes, tapping of tread and reaming. A CNC mill moves laterally and axially to remove material. There are different types of milling tools, each used to make specific cavities or just cut away material. Axial cutting requires teeth on the tip of the cutting head. At Jamesli we work with the latest machinery. These include 3 and 5-axis milling equipment. Manufacturing of precision components with an outstanding surface finish is possible with our CNC machining capabilities.

CNC turning service: precision machining.

With our CNC turning services we offer precision turning. To clarify, both plastics and metals are cut to the desired shape with the highest accuracy. Jamesli is one of the most capable sources for CNC turning in the Dongguan area. Furthermore, we get the job done correctly and at an competitive cost.

Prototype machining and small batch CNC machining.

We keep a part of our milling and turning capacity free for machining prototypes. At the same time, we handle low-volume production.
In fact, most customers value the high quality and accuracy of our CNC machining service. Therefore, we ensure that each component we produce meets the requirements. Since 2010, we became experienced in CNC milling and turning, and our reputation for quality continues to grow. At Jamesli , we have provided thousands of precision parts for different applications such as machine parts, construction components, turbine components, sensors, forgings, valves, sockets, bushings, and more. Most of the production runs finish within 1 to 2 weeks depending on complexity of the parts.  Fast services are also available.

What does CNC machining stand for?

In brief, we use CNC machining shape workpiece by removing material. This process works for metal as well as plastic materials. In addition, we use our machinery to fabricate complex 3D-shapes. More specific, a milling machine uses a rotating cutting tool that moves in all three dimensions. In this way, it removes material to achieve the desired part shape. The cutting tool cuts material (chips) from a full piece of material. We place that workpiece on the moving table of the machine. The spindle with the mill is located above the workpiece.

A processing unit controls the vertical (Z axis) motion of the cutter and the horizontal (X and Y axis) motion of the block of material while the cutting tool turns. In case of turning, it is the workpiece that rotates and the cutting tool works along the axis of the part. Contact us for CNC milling and turning service in China. Our team is confident to fabricate quality parts in short times and at an excellent cost.

Machined components.

Most  CNC machined componentsare electronic enclosures, machinery components, fixation products, mounting brackets, spare-parts and more. At Jamesli , our number one priority is customer satisfaction. To clarify, we process large volumes, and still we maintain speed and quality. Please contact us for CNC milling services. With our CNC machining centers, we provide precision CNC machiningof numerous materials, including stainless steel machining and aluminum machining. Next, we specialize in precision milling and turning. Therefore, we utilize CNC milling centers. In addition, all of the spindles are high-speed with fast tool change. Feel free to visit our plant  and you will see our latest equipment for CNC millingand CNC turning.

Series CNC machining.

At Jamesli , we also offer a variety of other machining services, which cover the entire production process of high quality parts. Therefore, we have brand new machinery to tackle conventional milling, drilling, turning, and sawing, as well as grinding and honing, deburring, and part marking. Through approved, certified vendors, we also provide heat treating, welding, plating, and painting. Once your part is completed, our QC department will inspect it carefully. Finally, we will assemble and pack the goods for shipping.

Small- to medium-sized parts manufacturing is Jamesli ’s specialty.We produce parts in many different quantities from small volumes to mass production. Our volume production area turns out runs of 10 000 pieces or more per week. Whether your order contains one component or many, and even if it needs special processing or assembly, our skilled team can truly take your project from concept to production. Our milling and turning centers have delivered millions of parts to a broad range of industries world wide.

Materials we process with CNC machining.

Our CNC shop produces a broad range of custom made metal and plastic components for you. Materials suitable for precision machining including  Aluminumsuch as AL2014, AL2017, AL5052, AL6061, AL6082, AL7075, Brass, Copper, Stainless Steel such as SUS201,SUS303, SUS304, SUS316, 316L  , Steel 17-4PH, LY12, 65Mn, Cr12, 40CrMo, AL6063 , ST12.03,SS2331, AISI12L14, Y15, 45#, Q275 and plastics like ABS, Bakelite ,POM, PC, PEEK, Nylon, Teflon and Acryl. We source the materials you request in case they are not available in stock. Also, we deliver all machined parts conform your 3D files and technical drawings, since we strive to optimum quality. In addition, we keep an eye on tapping threaded holes, reaming and applying chamfers.

Our equipment to fabricate machining parts.

We operate all necessary equipment for milling with high precision and as such we produce high quality metal and plastic parts. There is a strict follow up of the machines tolerances and we adjust when necessary. Two high skilled programmers make the CAM programs for numerous machining parts, every day. In addition, quality engineers follow the first out-of-machine samples to inspect and adjust on the spot.

  • We have many 3- and 4- axis CNC milling centers.

  • 5-axis CNC machining centers.

  • Milling centerss to mill large parts up to 4 meters in length.

  • CNC turning lathes

  • Conventional turning and milling equipment.

  • Drilling of holes an deburring.

  • Tapping of threaded holes.

  • Reaming of holes with narrow tolerances.

CNC Machining Services

Are you looking for a reliable and quick-turn provider of CNC machining services? You’ve come to the right place!

Using state-of-the-art CNC technologies, our unmatched team of machinists, engineers, and quality control experts works together to ensure your products are done right and shipped on time.

At Jamesli, we’ve designed our ISO 9001: 2015 certified CNC manufacturing facility for rapid prototyping and low-volume production of a broad range of components.

Our CNC machining services also complement our other manufacturing capabilities (like 3D printing and injection molding), providing you with an all-encompassing manufacturing solution.

We produce simple and complex precision machined parts in a broad range of materials and surface finishes.

What is CNC Machining?

Computer numerical control (CNC) machining is a subtractive manufacturing processㅡwhich means it uses machine tools to remove portions of material from a workpiece till it forms the desired shape.

A computer program (also called G-code) controls the sequence by which CNC machine tools (or workpiece) move against each other to create the desired parts.

Standard CNC machines include multi-axis CNC milling machines, lathes (or turning machines), and routers. Although all CNC machine types rely on computer instructions to perform subtractive manufacturing, they differ slightly in their modes of operation.

For instance, CNC millingmachines operate by holding the workpiece in place as the cutting tool rotates against it. In contrast, CNC turningmachines create parts by holding the cutting tool in place as the workpiece rotates against it.

High Precision CNC Machined Parts

CNC machines can create a broad range of features and high-precision parts. For instance, CNC milling machines are ideal for producing cavities, angled shapes, holes, and slots.

In contrast, CNC lathes are suitable for creating cylindrical shapes or parts that are symmetrical near their axis.

Nevertheless, CNC milling and turning machines can achieve tolerances as tight as ±0.001mm.

They are also compatible with a broad range of materials, including metals and plastics, so long as these materials are available in blocks. This is not the case with additive manufacturing technologies (like 3D printing), which are only compatible with plastics and a few metals.

Advantages of Jamesli’s Services

#1 High-quality and reliable

We have highly trained engineers, machinists, and quality control experts capable of getting your product done right the first time. Our team of experts follows industry standards by using best-in-class software, state-of-the-art CNC technologies, and quality control tools to create customers’ parts.

#2 Broad range of material options

We offer a wide range of material options, including metal parts (like aluminum, steel, stainless steel, brass, copper), plastic parts (like POM, PTFE, PC, PEEK, PET), and special alloys (like Kovar, Invar, Inconel, Titanium, Mocu).

#3 World-class machine shop

We adhere strictly to several key industrial, quality, and environmental standards. For instance, our machine shop is ISO 9001:2015 certified for quality management systems, ISO 14001:2015 for environmental management systems, and ISO 13485:2016 certified to fabricate medical devices.

#4 Cost-effective manufacturing services

At Jamesli, we adhere strictly to the design for manufacturing (DFM) criteriaㅡwhich means we design parts and optimize designs for ease of manufacturing. This reduces our start-up, material, and feature costs, providing you with a cost-effective manufacturing service.

#5 Fast manufacturing and delivery

Not only do we get your products done right, but we are also located in southern China’s Greater Bay Area. We’re close to major shipping ports, allowing us to get your products to you swiftly.

#6 Custom CNC machining

We offer custom CNC machining services to our customers that want to replace obsolete parts, work with difficult materials, or manufacture parts with special requirements.

Our China CNC Machining Services

CNC Milling

Your precision machined prototype or production parts, produced using our advanced CNC machining stations.


CNC Turning

Your precision turned parts, produced by our skilled machinists on imported or domestic CNC lathes in China.


Industries We Serve

  • Aerospace & Defense

  • Optical Communication

  • Robotics & Automation

  • Automotive

  • Electronics

  • Medical Equipment

  • Semiconductor

  • Energy

CNC machining has been at the forefront of machining technologies used in the aerospace and defense industry for over three decades. And this is due to the extremely high precision CNC machines offer, making them ideal for creating many safety-critical parts, such as landing gear and engine components, missiles, and combat vehicles.

View Some Examples of Our Precision CNC Machined Parts

How CNC Machining Works: An Overview

How Does CNC Machining Work?

CNC machining is a subtractive manufacturing process that employs computerized controls and machine tools to remove portions of a stock material till the desired custom part is made from the workpiece.

The machining process starts with the creation of a CAD (Computer-Aided Design) model of the desired part, which is then loaded into a CAM (Computer-Aided Manufacturing) software and converted to a set of computer instructions.

This set of instructions (or G-code) allows the machine to execute different cutting operations at high speed (thousands of RPM) till the desired custom part is made.

How Does CNC Machining Compare to 3D Printing?

Both CNC machining and 3D printing rely on CAD files and computer inputs to transform a starting material into desired custom parts. However, unlike the subtractive CNC machining process, 3D printing is an additive machining process. It revolves around adding materials in layers to build the desired custom part.

CNC machining offers a wide range of material options, whereas 3D printing only works with plastics, polymers, and a few metals that are available in powdered form. Additionally, CNC machined parts are usually stronger than 3D printed parts; as such, CNC machining is ideal for prototyping and production of functional parts.

What are the Different Types of CNC Machining?

CNC machines come in many varieties, with each type having its unique functions.

CNC turning and milling machines feature built-in tools for cutting and drilling the workpiece till the custom CNC part is made. They are available in 3-, 4-, and 5-axis configurations, depending on the part complexity.

The CNC milling process involves the workpiece being held in place while the cutting tools rotate around it, whereas in CNC turning, the workpiece is rotated around the fixed cutting tools to create the desired shape.

Unlike CNC milling and turning machines that rely on cutting tools, CNC Electric Discharge Machines (EDM) utilize electric sparks to manipulate materials into the desired shape.