Lebrero tandem rollers have been specially designed for compaction of bitumen mixtures and other types of layers during the construction of roads, airports, etc...
VTA 80, K3 and K4 have many different possibilities of working field combination in their working activity. All these combinations are absolutely under control of the operator in the control board by means of switches. All this is possible thanks to:
Two vibratory drums.
Variable eccentric masses.
Two different frequencies of vibration to choose from.
Possibility to invert the working fields of the drums when inverting the sense of direction.
Automatic and progressive connection of vibration when the machine is started.
Automatic disconnection of vibration when stopped.
Two types of work for every eccentric mass, depending on frequency:
IMPACT for compaction of thick layers and difficult materials to compact.
CONCORDANCE for compaction of thin layers, delicate materials and perfect finishings.