(Photo courtesy of Wirtgen Group)
Hamm’s HD+ series of tandem rollers combine vibration and oscillation in one drum, and includes several new models featuring interfaces for digital applications.
The HD+ 120i V-VIO 12 t tandem roller features a vibrating roller drum (50 Hz or 3,000 vpm) at the front and a VIO drum at the rear, while the HD+ 120i VIO-2 HF provides additional application options with two VIO drums.
An automatic control feature on the HD+ 120i VIO-2 HF ensures that the front drum, in relation to the direction of travel, is always working in vibration mode, while oscillation or static compaction is used on the rear drum in order to achieve the best possible results.
When it comes to compaction force, the HD+ 120i VIO-2 HF has been designed as a high-frequency machine, offering a vibration frequency of 67 Hz or 4,020 vpm, front and rear. Both models are powered by a 115 kW (154 HP) Deutz engine.
Particularly beneficial is the ability to switch between vibration and oscillation or, in the case of the HD+ 120i VIO-2 HF, to combine two vibration and oscillation drums together, removing the need to switch machines or deploy an additional machine and another operator on the construction site.
The HD+ 120i VIO-2 HF offers nine different combinations when selecting the compaction method. As with earthworks, the combination of vibration and oscillation delivers fast compaction in fewer double passes, making it particularly well suited to final compaction.
Machine features include a spacious driver’s cab with clear view, the company’s Easy Drive operating concept, and various interfaces to connect telematics systems, fleet management systems and digital applications for controlling and documenting compaction.
