In gasoline engines, variable valve control is the prerequisite for low fuel consumption and thus low CO2 emissions. For systems that switch between different cam profiles, Hirschvogel supplies carrier shafts and camshafts, as well as eccentric shafts for fully variable systems. To ensure system functionality, it is essential that the components do not distort during production. Modern machinery and longstanding experience in forging and heat treatment enable us to reliably produce components that meet the most stringent tolerance requirements.

Production processes

  • Hot forging
  • Cold forging
  • Turning
  • Grinding
  • Gear manufacturing
  • Plasma nitriding


  • Dispersion-hardening steels
  • Heat-treatable steels
  • Case-hardening steels
  • Nitriding steels


  • Tight design tolerance across the entire component