Sustainable overall concept
HAMM has fine-tuned every aspect of the e-rollers to preserve resources. For example, the models feature an automatic electric motor stop as standard. This deactivates all functions when the machine is idling, thereby reserving precious battery capacity. When ECO-Mode is selected, the control limits the working speed. This also saves energy, as does the LED lighting, which is fitted as standard. The innovative steering control also helps to conserve energy: In the parking position, it uses no energy at all. The steering motor does not switch on until the electric driving lever is actuated. Then the machine steers with sensitive responsiveness and an adaptive energy supply with no additional effort.
Combination e-rollers with oscillation: For quiet and zero-emission compacting
Four of the e-models feature oscillation drums, two of which are combination rollers. This is where the already quiet oscillation meets with the quiet e-drive. The result of this is quiet compaction machines that produce no emissions and cause very few vibrations in the surrounding area. They are ideal for compacting in noise-sensitive and vibration-sensitive areas, such as near hospitals or historical buildings.
All electrical components in the e-rollers are completely maintenance-free. The extensive electrification reduces the oil volume by more than 70%. Across the entire system, there are very few wear parts that need to be greased or that could suffer from abrasion. This means there are refreshingly few service points on the e-rollers compared with the diesel counterparts. The operating hours registered are also lower than on the diesel-engined models, because the operating hour meter is not activated until the driving lever is moved.
Available from 2023
At Conexpo, HAMM is displaying two models: The HD 12e VO, a tandem roller with one vibration drum and one oscillation drum, and the HD 12e VV, with two vibrating roller drums. The first electric models for the USA are scheduled for delivery at the end of 2023 to those regions where the EPA Tier 4 exhaust emission standard currently applies. Many of these states provide government grants to assist with the purchase of fully electric construction machinery as well as the development of the necessary charging infrastructure.