Zero-emissions energy-efficient compacting
With eight electric rollers in the compact class, HAMM's launch represents a milestone for the compaction industry. The HD 10e model (drum width: 1.00 m, operating weight: 2.5 t) and the HD 12e model (drum width: 1.20 m, operating weight: 2.7 t) boast the same compaction power as their combustion engine counterparts, but produce zero emissions. Compared to the diesel machines, they save approx. 10 kg CO2 every hour of operation. The e-rollers are operated in exactly the same way as the other models in the HD CompactLine series.
Low-voltage system delivers energy for a whole day
One Li-ion battery (capacity 23.4 kWh) provides the energy for the travel, steering, and vibration or oscillation drives via a 48-V system. Staff do not require any specialist training or qualifications to operate the low-voltage system. The battery can be charged via a rapid-charge plug (400 V, CEE) or a standard plug (230 V, earthed adapter). To charge the battery from 0% to 100% takes approx. 4 hours (400 V) or approx. 7.5 h (230 V). The battery is designed to operate in ambient temperatures of up to 45 °C and provides enough energy for one typical work day.
The vibration or oscillation unit is driven by electric means only via specially designed, compact synchronous motors. As a result, the efficiency rating more than doubles and the energy demand reduces accordingly too. The electric drive motor and steering motor power a hydraulic system. All e-components require no maintenance and offer impressively high torque. The concept ensures the power is always available to deliver peak performance on demand. Furthermore, a large portion of the braking energy is fed back into the system by means of regeneration.