Material reduction and quality improvement in just a few processing steps

The solar wave is the central part of a planetary gearbox. The other shafts, such as the ring gear or the planetary gear, revolve around this “sun”. This Felss sun shaft was produced for a customer by rotary swaging the outer and inner contour in conjunction with axial molds for the gearing.

Felss sun wave

The lightweight solution enables considerable material and weight savings while maintaining high precision. By reducing material, increasing quality and speeding up production, the classic mix of processes for machining a sun shaft can be replaced: Turning the outer contour, rolling the spline to solid material, boring out and turning out the inside.

Special features of the realized solution

  • Weight reduction with simultaneously improved vibration behavior
  • Increased power density (torque)
  • Reduction of components through functional integration
  • Reduced fuel consumption

Discover more applications


Crash tube

Hollow shaft

Steering shaft

Do you have any questions or would you like some non-binding advice?

Do you have questions about our products and services and would like to find out more about Felss? Then do not hesitate to contact us! Our experts will be happy to advise you.

Internationally positioned

Around the world: Felss produces sophisticated components of the highest quality and precision at five locations worldwide. With our plants in Germany, Switzerland, the USA, China and Slovakia, we are your global partner and you can benefit from the transfer of know-how within our group.

Your added value with Felss

Felss stands for smart, customized solutions in cold forming. Our aim is to offer you real added value with our machines, components and services.

  • Lightweight , weight-optimized use of materials thanks to intelligent material distribution.
  • More resilient Improved component performance through targeted control of material properties.
  • Resource-efficient waste avoidance and full material utilization through cold forming.
  • Faster Shorter production times and optimized workflows thanks to innovative processes.
  • More precise Highest accuracy of complex geometries thanks to Felss technologies.
  • Tailor-made Optimal solutions, tailored to your individual requirements.

Come to us as early as the development phase of your projects

We support you throughout the entire process – from the drawing to the finished component and beyond.