Precision and flexibility in con rod machining


The AT 200 and the AF 400 con rod machines are specialized in semi-finish and finish machining whereby every machine is optimally designed for the corresponding requirements. Highly precise sub-assemblies are only used where required.

Schematic representation of the machine

The AF 400 machine for finish machining of con rods

  • Highest precision due to optimized servo axis arrangement
  • No protruding masses thanks to compact axis arrangement
  • Oval and trumpet form bores with freely programmable geometry
  • Simple, scalable production increase
  • Hydrostatic spindles with highest precision, stiffness and dampening
  • Optional with more cost-efficient spindles with roller bearings
  • Up to 4 fixture plates can be mounted for short change-over times
  • Directly driven, NC-programmable main spindles
  • High thermal stability
  • High ease of operation
  • Very good accessibility for maintenance and tool change
  • Low space requirements on floor and in height



The clamping fixture swivels around the A-axis and can be moved linearly in Y-direction. It can be quickly changed over and allows a clamping sequence freely programmable in the NC program. Due to the high flexibility, it offers the possibility to quickly, easily and cost-efficiently produce different work pieces on the machine. Thanks to the four-sided tombstone concept, up to 4 different component types can be machined without any change-over.

Pleuelbearbeitung ohne Werkzeugwechsel




All main spindles of the AF 400 are equipped with hydrostatic bearings and direct drives, preventing vibration problems occurring with usual belt drives.
By the NC control, the speed of every spindle can be individually adjusted and the radial positions of the tool cutters can be determined and corrected.