Stream Finishing Units – sf -SERIES automation

The SF -series automation offers deburring, rounding and smoothing in a single processing stage, in a very short time and without detriment to the contours of the workpiece. Path-controlled motion enables specific areas of a workpiece to be processed more intensely. Because of the tremendous processing forces involved, the SF Automation provides fast and economical finishing and guarantee absolutely reliable processing results. The SF -series automation of machines can optionally be equipped with pulse finishing and because loading is carried out automatically, they are suitable, among other purposes, for production lines with a predefined cycle time. Depending on the requirement profile, the machines can be pre-equipped automatic loading or optionally equipped with integrated automatic loading. The modular design of the machine means that it can easily be adapted to the cycle time. This enables the SF Automation to be easily incorporated into a production line as an integral component of the line. Typical applications for the SF -series automation include deburring, rounding, smoothing and polishing of camshafts and components with complex geometries such as thread-cutting dies and fuel injectors.

Automatic workpiece loading

Automatic loading and changeover of workpieces by robot or loading system.

Perfect finishing results

The SF enables several stages of processing to be carried out very quickly in a single operation. For example, a workpiece can be successively deburred, edge-rounded, smoothed and polished in one operation. The position-controlled movement sequence enables individual parts of a workpiece to receive intensive selective finishing. Thus the amount of material removed can be regulated right down to the µm level.

Fastest finishing process

Tremendous processing force and high stream speeds result in extremely fast and economical finishing of the workpieces. The automatic loading makes the SF -series automation perfect for processing high quantities and for integrating into a production line.

Customized solutions

Number and design of workpiece holders can be customized to suit requirements. Depending on your needs, we carry out individual adjustments or develop a customized solution based on your requirements.


Otec Video


Otec Video


Otec Video

OTEC 2x SF4 with automatic loading and unloading

Otec Video

OTEC SF2 RLS with robot for precise rounding of cutting tool edges

Otec Video

OTEC SF3 RLS with robot - Automated deburring, rounding and polishing of tools

Otec Video

OTEC SF 1 ILS with chain loader

Otec Video

OTEC SF 4/4 Automation

Otec Video

OTEC SF 3/105 Pulsfinish

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  • Structure parts for aerospace

  • Fittings for aerospace

  • Bushings

  • Landing Gear

  • 3D printed metal parts for aerospace

  • Gear wheel

  • Blisk

  • Turbine blade

  • Gear wheel

  • Gearshift drum

  • Camshaft

  • Valves

  • Camshaft

  • Gear wheel

  • Inner forming die

  • Thread former

  • Tap drill

  • Die

  • Gear wheel

  • Wormshaft



  • Processing of up to 2 workpieces and automatic loading for up to 4 workpieces
  • Max. Workpiece length up to 500 mm incl. holder
  • Max. Workpiece diameter up to Ø 380 mm
  • Max. Workpiece weight up to 68 kg incl. holder
  • Fully automatic workpiece exchange
  • Automatic spindle positioning without manual setup process
  • Integrated parameter monitoring: speed, compressed air and process water
  • Additional interface for robot loading cell
  • Suitable for wet and dry processing
  • Workpiece clamping by realized by zero-point clamping system 
  • Process container diameter of 1,050 mm

Ready for Industry 4.0 (OPC UA, energy monitoring, remote maintenance, etc.)

SF Automation series

standard equipment

  • For up to 4 workpieces
  • Fully automatic operation
  • Maximum workpiece length up to 400 mm, with pulse finishing up to 250 mm (processable length may vary)
  • Maximum workpiece diameter up to 400 mm, with pulse finishing up to 150 mm
  • Maximum workpiece weight up to 15 kg
  • Tool clamping by means of 3-jaw chucks, grippers, mandrels or customized workpiece holders, optional HSK holder change
  • A single lift axis per workpiece suitable for wet and dry finishing
  • Maximum workpiece speed of rotation 40 rpm, with pulse finishing 2,000 rpm.
  • Diameter of process container from 780 mm to 1200 mm
  • Loading interface for automation with loading hatch on the right for automatic loading
  • Machine door at the front for manual loading

For workpieces with other dimensions, we will be pleased to develop a customized solution for you.



  • Processing of different batch sizes without retooling
  • Processing of large series, small series and re-grinding batches
  • Automatic loading, diameter detection and program selection
  • Max. workpiece length up to 220 mm 
  • Max. workpiece diameter from Ø 3 - 20 mm
  • Rapid loading and unloading using prisma pallets
  • 10 hours of unmanned processing despite mixed loading (360 tool capacity)
  • Short processing times of 30-180 seconds

SF 1 series with chain loader

standard equipment

  • Basic version with automatic loading for finishing tools
  • Automatic changing of workpieces
  • Chain loader with 64 or 160 positions, of which 5 positions are for collet chucks
  • Different workpieces can be finished in a single batch
  • Loader chain with loading sleeves according to tool diameter
  • Can be converted by changing the grippers and chuck adapters
  • Maximum workpiece diameter: 3 - 18 mm (more diameters are planned)
  • Maximum workpiece length: 150 mm (other lengths on request)
  • Setting-up time per workpiece: approx. 14.5 seconds
  • Total length can be controlled via touch panel at the machine
  • Suitable for wet and dry finishing

Tests not promises

Let us prove how good our technology is. We will be happy to put the performance of OTEC technology and the SF series to the test. We will give you detailed advice and develop a finishing concept tailored to your needs and formulate the best grinding and polishing media for your application. In addition, we offer to finish a sample workpiece for you individually and to provide you with a process log documenting all key process parameters.


Brochure as PDF files for downloading to your computer. To open the files, you need the Adobe Reader.


 SF Series  (English - 1091 KB)


 SF-HD ILS  (English - 5244 KB)


SF-PLS (english - 8051 KB)