Monoblock was replaced by an impact mechanism frame. Impact plates can be replaced at any time - available in various alloys.

A longer service life was achieved through optimised design.

Rotor was newly manufactured and successfully put into operation.

Defective rotor and impact mechanism frame were successfully overhauled.

New rotor successfully commissioned.

Converted from standard to reinforced beater bars. Rotor reinforced and hardfacing welded on.