When you opt for an OTEC DF system, you are choosing unparalleled quality made in Germany – at a fair price. Top-quality materials guarantee long service life and a proven design concept ensures ergonomic and efficient handling. Custom-designed workpiece holders make a significant contribution to the perfect processing results obtained by the DF series. They also ensure that the workpieces are mounted as quickly and efficiently as possible and considerably simplify batch processing. In recent years, OTEC has designed over 100 different types of holder. Furthermore, the process container features a water cooling system which keeps the polishing granulate at a constantly low temperature. This considerably extends the life of the process medium and ensures constant process quality, even at consistently high processing speeds. 

Absolute reliability 

Consistent use of only the best materials and components ensures trouble-free operation and long service life.

Maximum cost-effectiveness

Comparatively low capital investment coupled with the potential for very high cost savings in terms of processing times make the DF series an extremely cost-effective solution.

Perfect finishing results

Deburring, grinding or high-lustre finish in a quality otherwise only obtained through hand polishing.

Short processing times                                                                                    

In many cases, perfect surfaces can be obtained in just a few minutes





Independently driven tool holders

With this type of holder specially developed for finishing tools, each workpiece rotates indivually on its own axis in addition to the general rotation. This produces a uniform surface finsh in even shorter processing times. It also achieves excellent smoothing of the flutes of cutting tools.

Angled holder

Especially suitable for finishing end faces and forging dies

Quick tool changer

This system enables tools such as drills and burs to be changed in seconds by means of a lever.

Immersion depth control

For controlling the depth to which the workpieces are immersed in the granualte. Two photoelectric barriers are used to identify the tip of the workpieces when they are immersed in the medium. From this, the control system then calculates the maximum possible immersion depth. The immersion depth of the workpieces in the process container is displayed for any defined level of medium. The immersion depth of the workpieces  can be preselected for best results.

Changing  tray for attachments

Storage and changing tray for attachments (available in various sizes). Makes it easier to fit chucks and workpieces.


Hood for connecting an extraction unit

Water cooling

to reduce the temperature of the granulate

Trolley with castors for quick container change


We can try our solutions to your surface finishing and cleaning problems together. We will evaluate the results and make suggestions about your problems on surface finishing and cleaning processes.

Send us some sample, we will transmit you the results and our suggestions in the form of a process report.