A heavy shaft runs the working width of the head, turned by the tool circuit's own hydraulic drive. Chains hang from hubs along it with a hardened hammer at the end of each, and as the rotor turns the hammers strike the ground in an overlapping pattern to the depth the head is set to. A chain carries no bending moment, so a buried rock costs a hammer rather than a broken tine.
Flail and tiller are two rotors on one mount and one drive: the flail strikes and throws, the tiller cuts and turns. The head changes at the end of the arms on locking pins, hydraulic couplings and an electrical connection, and the machine reads what is fitted before it hands over oil.
THE FLAILSConsumables, on pins, in sets
The hammers wear from the first minute and are meant to. They change on pins in the field, in sets that keep the rotor balanced.
THE HOUSINGHeavy plate over the rotor
Plate closes the top and back of the chamber so what the rotor lifts goes back into the ground, with chain curtains across the mouth.
THE SKIDSA depth held over moving ground
The head rides on adjustable skids, on arms that let it follow the surface rather than fight it.