Motor spindle: The power package in the smallest space

When machines become more compact, the installation space disappears and the process does not allow tolerance, it needs a spindle that can be more than standard. One Motor spindle of Steinmetz grinding technique brings the torque exactly where it counts, namely directly to the tool. Without belts, without detours, without compromises.

What is a motor spindle?

A motor spindle is a high precision integrated drive unit, which is responsible in machine tools for rotationally producing machining. In Unlike classic spindle systems the Engine directly into the spindle integrated, thereby achieving particularly high speeds and a compact design.

The motor spindle is first choice when:

External drive components do not find space
High speeds with constant temperature control are necessary
Individual interfaces or tool holders are required
Machine concepts demand flexibility and precision

Construction and operation

The structure consists of: typically from Rotor and stator, a spindle shaft, high-precision bearings, cooling systems and sensor systems for monitoring temperature, vibration and stress. This integration reduces the mechanical complexity and significantly increases energy efficiency.

The operation is based on electromagnetic force transmission: The motor generates a rotary field which drives the rotor and thus the spindle shaft. Modern Motor spindles also have complex cooling systemsminimising thermal expansions and ensuring constant processing quality. sensors detect relevant process data during operation, to detect errors early and to extend the life of the spindle.

Thus, motor spindles are particularly suitable for high-precision and dynamic manufacturing processes such as milling, grinding or high-speed machining. Overall, the motor spindle enables efficient, powerful and reliable machining in modern machine tools

Motor spindles by Steinmetz: An overview

Depending on the application, very different requirements on the motor spindle are decisive, for example the maximum speed, the type of tool holder or the temperature stability in continuous operation. Therefore, in addition to the standard models, we also offer you developed special variants that match the respective machine environment.

Motor spindle with smooth tool holder

This design is outstandingly suitable for classic grinding processes in which reliable tool tension and robust construction are required. The keglige mount provides a positive connection to the tool for external and internal machining, even at high speeds and permanent loading.

Speed range: to 100,000 min-1
Performance: 50 kW
Lubrication: Optional fat duration lubrication for low maintenance inserts or oil-air lubrication for extreme speeds

Motor spindle with HSK mount

This variant has been developed specifically for automated machine concepts in which frequent tool changes, short cycle times and high change accuracy are required. The HSK interface offers maximum stiffness with minimal setup.

HSK-C25 to C100: Adjusted to your system environment
Speed: up to 60,000 min-1 – ideal for dynamic processes
Cooling: Integrated water cooling for constant temperature conditions

Customized from Number 1: Your motor spindle fits exactly

Our strength is not in series production, but in individual production. We develop motor spindles where other suppliers win. For example, for single pieces, small series or special solutions with extreme geometries or narrow time horizons. You will receive a motor spindle that is exactly matched to your machine, your machining strategy and your installation space. Whether drawing, functional sketch or common concept development. We are entering the technical discussion directly, we are discussing honestly the feasibility and supplying a specific offer within a very short time. Everything without detours, without waiting loops, directly with the technician.

Typical areas of application

Motor spindles of Steinmetz grinding technology are used in many industries. Each with its own requirements for precision, interface or durability. We understand these differences and align each spindle solution precisely with the respective application.

Automotive industry: machining and grinding of drive components, precision parts and bearing seats. Often in automated lines with minimum clock times.
Aerospace: machining of high-strength, temperature-critical materials with particularly high requirements for concentricity and thermal stability.
Medical technology: Fine machining of filigree components with uniform torque transmission, low vibration and controllable heat development.
Mechanical engineering and wage production: Special solutions for compact systems, flexible production units and prototypes with changing performance, interface and clock time requirements.

Find the right motor spindle now – or request individual solution!

You need a motor spindle that fits exactly to your application?
Then talk to us. Our designers will advise you personally and find the right solution for you.