Spindle motor

If you search the internet for the term spindle motor, you will often come across pages where the spindle motor is equated with the motor spindle. This is a very simplified view. The spindle motor is actually the electric motor that drives the spindle. It rotates the spindle or the shaft contained in it and thus enables effective work with tool-guiding spindles.

What is the special element of a spindle motor?

The spindle motor as we know it today was developed in the late 1980s. At that time, faster production was required in many areas and ways were sought to further optimize tool-carrying machines. Direct drives were also tried out.

Ultimately, it is precisely these direct drives that have become established and are often used as the standard for motor spindles today. Whereas in the past a gearbox was interposed between the drive itself and the tool to be moved, today there is no longer a "transmission" via a gearbox. Instead, the impulses are transmitted directly from the motor to the spindle itself.

It is therefore all the more essential today that spindle motors are precisely matched to the spindles with which they are to work. Only then can the spindle motor really fulfill all the requirements of the spindle to the motor 100 percent.

Why is the spindle motor so important as a direct drive for the spindle?

The direct drive via the spindle motor has taken production with tool-guiding spindles to a new level. There is a simple reason for this. The speed achieved with a classic spindle motor is far higher than that of a conventional spindle. However, it is precisely this high speed that ultimately makes the spindle motor so interesting for so many companies.

Nice to know - The origin of the term "spindle motor"

Today, it is assumed that the term spindle motor originates from the textile industry. Here, the spindles of modern looms are controlled and steered by motors. This term was then adopted in mechanical engineering. The axis of a CNC machine, for example, is also referred to as a spindle.

As the drive for this shaft is provided by an electric motor, the term "spindle motor" is also appropriate here.

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Conclusion: The spindle motor - an important component of every CNC machine tool

The spindle motor is a type of motor that differs from other classic motors in various ways. The most important point is certainly the fact that the spindle motor drives the spindle or shaft directly. There is neither a gearbox nor any other "transmission station" between the motor and the shaft. Ideally, the motor must therefore be fully tailored to the requirements of the respective spindle.