Hamm pivot-steered tandem roller series features Smart Compact digital support
Hamm is launching a new generation of pivot-steered tandem rollers at bauma 2022. The HX series is designed for high quality compaction, and can be paired with Smart Compact, a digital compaction assistant, along with other new technologies.
The HX 70i model (7 t, 15432,4 lbs/55.4 kW) and HX 90i (9 t, 19841,6 lbs/74.4 kW) achieve high surface outputs on large construction sites, but also impress in the most challenging tasks, such as compaction in curves. The high level of precision is possible thanks to pivot steering with an extremely large turning angle, a very large track offset and four steering modes.
Compaction technology that features split vibration and oscillation drums actively prevents cracks and bulges from forming in the asphalt. The automatic reversing with electrically adjustable seat operating unit also guarantees quality and comfort. It brakes and accelerates the rollers quickly, but smoothly. The seat also turns automatically in the direction of travel when reversing.
On request, Hamm equips rollers in the HX series with Smart Compact, the new automatic compaction assistant. It actively supports the driver and is easy to operate. This compaction assistant combines the simple operation with handling via smartphones, computers, and other digitally controlled devices
The driver only has to enter whether a base, binder or asphalt surface course is to be compacted. Smart Compact takes care of the rest: The assistant decides automatically whether to compact with vibration and big or small amplitude, with oscillation, or statically. To this end, it evaluates physical properties of the asphalt, such as temperature or rigidity. New features include the integration of local weather data via an integrated weather station, and the assessment of the complex cooling behavior in the area of tension between the asphalt and air temperature, as well as the wind. Based on all of this information, the system determines the right setting separately for both drums.
Smart Compact detects when an asphalt layer is almost completely compacted. The system then automatically cancels the dynamic compaction, and puts the roller into ECO mode. As a result, the engine speed is reduced by up to 20 percent, which also means that up to 15 percent fuel can be saved. Smart Compact therefore not only increases the compaction quality, it also conserves the machine and resources. The bottom line is that Smart Compact increases process reliability and, in turn, quality of the compaction and surfaces.
The HX series has newly designed lights and sheet-metal brackets, as well as new details around the cab. In the cab, the unobstructed view to the rear left has been further improved. The new camera system with robust monitors (IP 66), which is integrated as standard, also further improves the view into the rear space. In future, water and additive will be stored separately in the additive mixing unit. This saves water, and the additive can be dosed with an extremely high level of precision. Furthermore, new spreader models with suitable tarpaulins and other extras are available for the HX series.