Automotive Industry
If you want to control your process costs, you have to understand all processes. Our focus is on the integrated view of the machining task, from planning to implementation of the series process. We support you in all phases of production, from production optimization, construction of new production lines, inventory optimization or introduction of new technologies.



The future of the automobile is marked by new drive concepts from electric to hybrid drives to new drive concepts such as the fuel cell. New engine and body concepts are being developed in this environment, and new materials are increasingly being used to achieve the same or better performance values with the same or lower weight.


Modern fiber-reinforced plastics (FRP) are increasingly being used for reasons of efficiency, weight and strength. Their special properties complement classical design methods and lightweight construction based on aluminium and titanium alloys. Fiber plastics or composites are gradually finding their way from aviation and motor sports into the broad industrial application of automotive and commercial vehicle technology.

Where high specific strength at low weight is required, we come across fiber plastics. When machining CFRP, GFRP and CFRP-metal-stacks, surface quality and process reliability are of paramount importance. This requires tools with specially adapted geometry, special cutting materials and coating systems that are matched to the respective material.


Even though more and more new materials are finding their way into automobile production, there are still many classic machining processes to be found.

One of these is the production of centering holes in the manufacture of axle systems. We have solutions.


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Inconel 718 is a hardenable nickel-chromium-iron-molybdenum alloy with high temperature resistance and excellent oxidation and corrosion properties.

Due to these properties and good machinability, the material is used for aircraft engines, gas turbines, rocket engines, automotive turbochargers, high-strength springs and fasteners. 

A special step drill based on SIRIUS 761310 (Ø2.5x3.6) is used especially designed for machining Inconel. The edge preparation of the drill tip and the special tip grinding create more precision and tool life.

  • Component: Turbocharger axle

  • Machine: Spinner

  • Cooling: emulsion 4%

  • Drilling depth: 5mm blind hole

  • diameter: 2,5x5,3mm

  • Material: Inconel 718

  • Tool life: 400 holes

  • Cutting speed vc: 5 m/min

  • Feed speed vc: 38 mm/min

  • Productivity +21%
  • Lower unit costs
  • Shorter lead times
  • Higher process stability


Due to their high hardness, hardened steels are mainly used in mechanical engineering for wear parts.
Most hardened steels have hardnesses up to 54 HRc. They are mainly used for plastic injection moulds and in mechanical engineering.
Steels with hardness up to 62 HRc are mainly used for forming tools and heavy-duty machine parts, as well as for injection moulding of fibre plastics.
Steels with hardnesses above 62 HRc are used in the manufacture of tools for cold and hot forming, in toolmaking for spindle bearings, valves or other heavily stressed parts.
The focus is on tool life, high process speed and precision.

-> Most SPPW tools are designed as universal tools, i.e. suitable for machining a wide range of materials. We recommend the use of coated tools for steel machining. A suitable cutting material must be selected depending on the hardness of the material. From a tensile strength above 30 HRc (1000 MPa) we recommend the use of VHM tools, above 45 HRc only coated tools and for hardnesses above 54 HRc suitable special geometries.


Aluminium alloys (Mg, Si, Cu, Zn)
are very different in their machinability. For example, Al6061 is difficult to machine while Al7075 (AlZnMgCu1.5) is easy to machine.
Depending on the alloy, changes may occur in the microstructure during storage, which may result in changes in strength.

-> SPPW aluminium milling cutters have large grooves for optimum chip removal and between 1 and 3 cutting edges.
The cutter surfaces are often polished and coated (Dia.HC, Alu.Cut, Z.Cut) to prevent weld build-up.


Carbon fibre (reinforced) plastic, consists of the C-fibre and the plastic matrix, mostly epoxy resin.
The properties of matrix and fiber complement each other. Machining by breaking the fibres. Heat is a problem because the matrix can degenerate. There is also a risk that CFRP will delaminate.

-> SPPW CFRP milling cutters have many cutting edges with chip breakers and are Dia.HC or diamond coated.
Cutters with alternating spiral direction avoid delamination.


Glass fibre (reinforced) plastic, consists of the G-fibre and the plastic matrix, often epoxy resin. GRP is a low-cost fibre composite material. Large parts can be produced without any problems.
Depending on the production method, the fibres are often random. Aligned GRP laminates or combinations with other chamfers also occur.

-> SPPW GRP cutters have a pyramid-shaped toothed cutting edge and are often coated with Dia.HC. The cutting edges are available in fine, medium and coarse profile shapes as well as different face geometries for the respective application.

Find the right person to ask

Do you have a specific question?

Do you have questions about our products, would you like to be advised on our tools or make an appointment? Then please contact the appropriate contact person directly with your request. We will be happy to help you.

Of course, we also welcome suggestions, praise and criticism.

You can reach us either via the contact form below or quickly and conveniently by telephone or e-mail.



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