How to Choose Your CNC Machine

CNC Vertical Machining Center. Photograph taken by Kentindustrialusa

Computer Numerical Control is used mostly in the manufacturing industry, where various machine tools are controlled by computers. Because these job are often critical and delicate, it is important to buy the correct machine for the job.

Here are a few things that you need to tick off when you’re picking a machine for your production unit.


The weight of the machine should be taken into account. These machines can be made of cast iron, aluminium, or polymer composite. If you are seeking a high-end machine with stringent specifications, you would opt for a cast iron construction. It has a higher level of rigidity and is longer lasting. But since it is heavy, it cannot moved around often. Aluminum and polymer composite are more portable choices.

Function Radius

When you’re getting a CNC machine for your company, you should check the maximum area that the machine can cut. For instance, should you want to laser cut alloys in your business, the largest part that could be cut must be equal or smaller than the range of the CNC laser cutter.


Feed rate is how fast a machine can move while cutting standard-sized material. To choose the right machine, you have to check whether high feed rates are crucial to your operations.


The size of your workshop and how much space you can allocate for your CNC machine should also be your consideration when picking a machine for your factory. If you have a large workshop, then you can opt for cast iron machines. They may be bulky, but they are productive and powerful.

Spare Parts

You will also need to find out whether it is easy to procure spare parts for the machine of your choice. If you are buying popular brands, such as Amada or Trumpf, finding spare parts for your machine is relatively straightforward. But it may be more difficult for that of not so well-known brands.


Not all workshops are wired to provide energy for high-powered equipment. Since CNC machines have big appetites for electricity, you want to be certain that your workshop has enough capacity to meet the energy requirements of the machine.

Stepper or Servos?

Motor drives on the market are called stepper and servos. Servos cost more than steppers but they are more accurate. A servo system checks its position with a measuring device at each move. This is necessary if your final products must be repeatable and pinpoint accurate.

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