At bauma 2022, Hamm will present the HC series—a new generation of earthworks rollers for all markets.
According to the company, the compactors achieve a high level of compaction power while simultaneously achieving a reduction in CO2 emissions.
Also, the machines feature new communication capabilities; all models in the HC series are “digital-ready” since they can be equipped with various interfaces for the digital construction site.
One platform for all markets
Hamm is bringing together its two previous compactor series—the 3000 series (Tier 3) and the H series (EPA Tier 4/EU Stage V)—with the HC series on one platform together with models with an operating weight of 11–25 t.
The diesel engines comply with the regional requirements, and their power varies between 85 and 160 kW (114 and 215 hp), depending on the weight. On all models, the drum width is 2140 mm (7 ft).
In addition to the previously known sales variants, in future, there will be CR machines with reinforced components for applications on difficult terrain and special equipment for applications on rocky ground.
The HC series is recognisable due to its new, athletic design and the view channel in the engine hood.
Also, new frame concept guarantees increased tank volume and according to the company, the compactors will be delivered to sites with a 336-litre fuel tank.
Impressive compaction parameters
In comparison to the predecessors, Hamm has increased compaction power. The centrifugal force has been increased by up to 15% and the static linear load is as high as 80.6 kg/cm.
Also, a new cast articulated joint with articulated joint lock allows for a greater steering and swing angle with improved kinematics. Thanks to the optimised weight distribution in combination with the Traction Control, the gradeability has also been further improved. Furthermore, the front vehicle and the scraper have been redesigned, which has resulted in a significant increase in clearance on the drum, which could eliminate the accumulation of material.
Great power, economical in continuous operation
Thanks to new approaches in machine management, Hamm’s HC series achieves increased overall performance.
The integrated ECO mode supports the operator so that they can work in the economical partial-load range as often as possible, which reduces the need for cooling. The speed is reduced for this, but, thanks to a large travel pump, power is not compromised. This concept saves fuel and reduces the noise and exhaust emissions.
Also, with the optional engine stop system, the energy consumption can be reduced even further.
The cab offers the operator over 20% more tread, around 30% increased space and numerous storage compartments.
Furthermore, the vibrations and the noise level in the cab are significantly reduced thanks to the materials and design.
A comfortable heating and air-conditioning system, Easy Drive operating concept, innovative seat operating unit, comfortable steering as well as modern ventilation all lend to a comfortable operator experience.
In the dark, the standard LED lights light up the environment in all working situations. Day and night, thanks to the view channel in the hood, the roller meets the requirements for the field of vision.
On the cab, a large additional mirror with proximity detection improves the view of the immediate environment, and design tricks guarantee low-vibration mirrors, which can be easily adjusted from the cab.
Equipped for the digital construction site
According to Hamm, the HC series is prepared for the quality and communication requirements of the future.
For example, the “Smart Doc” app, which was developed by Hamm, graphically displays all of the key compaction parameters as well as the compaction progress, and logs the measured rigidity as well as the position data.
In the Smart Doc app, even inexperienced drivers can immediately see which areas have been sufficiently compacted and which areas still require compaction.
These compactors can communicate, even with digital applications from third parties, via a standardised interface.