Cnc Manufacturing Service


 PTJ provides a variety of precision CNC machining services including milling, turning, EDM (electrical discharge machining) and wire EDM, and surface grinding. With our precision 3-, 4- and 5-axis CNC machining centers, combined with other advanced capabilities and our experienced team, we can handle all technical aspects of creating your prototypes and parts, so your team can focus on bringing your product to market. If you need a precision machining company for plastic and metal CNC machining parts, PTJ is the best place to go. Contact us today to get your manufacturing solution and details.

Our Advantages of CNC Manufacturing Service

There are huge numbers of CNC machining service providers. Why should you choose us? Here are the top 3 reasons:

1. Experience

Our engineers have built up rich, deep experience from many previous projects, so they can handle complex and precision parts in several industries without a problem.

2. Advanced Equipment

PTJ has extensive in-house equipment for both manufacturing and testing. Your parts will be manufactured and inspected with our advanced in-house equipment, including HAAS 3-, 4-, and 5-axis CNC milling, Hexagon CMM, and Olympus XRF analyzer

3. Fast Turnaround

On average we return quotes within 24 hours, parts ship within 7 days or less, and we have a 99% on-time delivery and quality rate.

CNC Machining Tolerances

With a wide range of CNC machines, we are able to provide stand tolerance CNC machined parts with the most economic price and super precision machined parts for the high-end products. When working with PTJ, we guarantee all parts will be made accordingly to your specification. If 2D drawings are not available, you can also indicate with ISO 2678 as well. Click to review the table of the ISO 2678 tolerance standard.

Precision Machining

Aside from standard tolerance CNC parts such as ISO2678M or ISO2678F, PTJ also offers high-precision CNC machining parts. With high precision milling & turning machines, we are able to catch super tight tolerance for prototype machining & production.
After being in the manufacturing industry for over 10 years, we discovered a simple formula to produce precision parts
Precision machines + Precision heart = Precision parts.
PTJ has a wide range of CNC machines and experienced engineers who never compromise with tolerance or part quality.

Overview: What's CNC Machining?

What is CNC machining?

CNC machining is a manufacturing technique for removing material. It uses sharp cutting tools, available in a variety of shapes and sizes, which are precisely controlled by a computer. CNC stands for Computer Numerical Control.

How CNC machining works

  • CNC machining starts with a computer, on which designers prepare a part using CAD (Computer-aided Design) software. This digital part is then converted into a format that can be recognized by a CNC machine.
  • Instructions are sent to the CNC machine in the form of  “G-Code” after which the machine can start cutting.
  • Most CNC machines have a “worktable” and work holding device to keep a block of material — known as the “workpiece” — in place. The worktable may or may not move, depending on the style of the machine.
  • When machining starts, the cutting tool makes contact with the workpiece, cutting away layers of material. The tool and/or workpiece is moved and/or rapidly rotated according to the G-Code instructions so that cuts are made in exactly the right places until the part is finished.

Different types of CNC machine

  • CNC machines include CNC mills, CNC turning machines (or lathes), CNC routers, and Electrical Discharge Machining (EDM) machines.
  • CNC mills have rotating cutting tools that are moved to different areas of the workpiece to make cuts and can be used to make many different pats. CNC lathes work the other way, rotating the workpiece against a stationary cutting tool, and are used to make cylindrical parts.
  • CNC routers are similar to CNC mills, but have less power and cannot cut the hardest materials. They can, however, be faster than CNC mills.
  • EDM uses electrical discharges (sparks) instead of a sharp cutting tool to cut material. No physical contact is made between the tool and the workpiece.
  • CNC machines are often defined by their number of axes. More axes mean they can move their tool and/or workpiece in a greater number of ways, giving greater cutting flexibility and the ability to make more com