Combination machines

Combination machines integrate several work steps into a single machine. They are state of the art when it comes to using track possessions optimally.


Track renewal and ballast cleaning are almost always carried out together as new track material requires a perfect ballast bed. The RU 800 S is the world’s first combination machine for continuous action track renewal and simultaneous ballast bed cleaning and supply of new ballast.

The machine uses track possessions cost-efficiently as it renews the track and cleans the ballast in one single operation. This prevents lost work cycles and ensures the technologically correct work flow: cleaning before renewal. The machine can also clean the ballast in narrow track situations, such as station platforms.


The RPM-RS-900 combines the advantages of a formation rehabilitation machine for tracks with two excavating chains and a high-capacity ballast cleaning machine. In addition, the machine features several technologies for ballast reprocessing: ballast screens for cleaning heavily soiled ballast, ballast washing plants for finely soiled ballast and ballast crushing plants for reprocessing old ballast.

The subsoil properties can vary even within short sections of line. Therefore, it is sometimes not necessary to perform continuous rehabilitation.

In sections with a high-quality subsoil or solid formation, such as rock, the RPM can work like a ballast cleaning machine of the latest design.

The large excavating chain takes the material to two high-performance screening units. If required, the circuit can also be extended to include an impact mill for ballast sharpening. New ballast can also be supplied.

If the subsoil quality of the following sections is poorer, the machine switches over to rehabilitation mode. In this mode, the second excavating chain is used and the consolidating unit for the formation protective layer (FPL) is put into operation.