Brushless VS Stepper motor on our cnc machines
- Alexia Saby
- May 27
- 2 min read
Updated: Jun 3
At KMSYSTEM, we develop all our machines in-house, from A to Z. After extensive research and testing in real-life conditions, we chose a combination of Brushless and Stepper motors for our cnc machines, each tailored to a specific application.
Here's why!
Our cnc machines are designed to meet both simple needs and specific requirements, sometimes necessitating an entirely bespoke design. This versatility enables us to operate in a wide variety of sectors, sometimes with very strict requirements in terms of precision, repeatability and finishing.
With this in mind, the choice of motorization is crucial. There were two main technologies to choose from:
Brushless motors, renowned for their efficiency, reliability and high-speed performance.
Stepper motors, appreciated for their ease of operation and precision at low speeds.
Each of these solutions offers specific advantages for certain applications. Here's a comparative overview.
Brushless motors (BLDC) for cnc machines
Brushless motors offer improved energy efficiency, reducing energy consumption by up to 15 times compared with conventional motors.
The absence of brushes eliminates mechanical wear due to friction, increasing reliability and reducing maintenance requirements.
They maintain high efficiency and constant torque at both low and high speeds.
Their compact size makes them easy to integrate in confined spaces, making them perfectly suited to our custom-built machines.
Stepper motors for cnc machines
Stepper motors offer precise motion control, allowing incremental movements without the need for position sensors.
These motors can be precisely controlled to achieve the desired motion and positioning. Combined with suitable microcontrollers and drivers, they offer excellent open-loop control.
Stepper motors perform well at low speeds, but can lose efficiency at high speeds.
They consume energy only when they are actively moving or generating torque, thus reducing overall energy consumption.
Our choice at KMSYSTEM
At KMSYSTEM, our priority is to guarantee performance, precision and reliability on all our CNC machines. That's why we've opted for a combination of two technologies:
Brushless motors on the X, Y and Z linear axes, to guarantee high travel speed, constant precision and responsiveness, even on long or complex strokes.
Stepper motors with encoders on rotary axes (4ᵉ and 5ᵉ axes), which offer an excellent compromise between positioning accuracy, simplicity of control and safety, notably thanks to loss-of-step detection.
This hybrid choice enables us to offer machines that are both high-performance, adaptable and robust, capable of responding to the most varied applications - from simple machining to the manufacture of complex technical parts.
With KMSYSTEM, turn your ideas into concrete solutions, thanks to French expertise recognized worldwide.
Take the next step with our Ma In France CNC machines. Contact our team to find out how we can turn your production challenges into opportunities for success.
Together, let's shape the future of your business!
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