Driven fully hydraulically (original Rexroth parts), the self-locking differential of the HAMM 311D guarantees excellent climbing ability, with gradeability consequently as high as 53% on soft soil.34 HAMM Compactors Achieve Top Performance
34 HAMM machines of the 300 series were in action during construction of the Sri Komaravelli Mallanna Sagar Reservoir, compacting layer upon layer of different construction materials: soil, murrum soil and black cotton soil. The large number of machines is explained by the scale of the construction project – the reservoir dam is approximately 400 m wide at the base and is still 8 m at the very top. To complete the outer skin of the dam, the compactors had to cope with an incline of approxi-mately 36%, whilst compacting at the same time. The 311D compactors from HAMM were convincing products in this situation as their drum drive gives them an impressive ability to climb.
HAMM 311D: A Reliable Powerhouse
The engine with a rated output of 74 kW (100 hp) supplies the HAMM 311D with plenty of power to ensure a sustainable, stable amplitude output when compacting steep slopes. Its static linear load of 30 kg/cm is every bit as impressive as its cen-trifugal force of 240 kN. This power leads to good compaction performance.
HAMM 311D: Outstanding Safety
Working with construction machines on a slope exceeding 35% involves potential safety risks including rollover or slipping, which may injure machine operators and other workers on the job site. So, it was lucky for everyone that the HAMM 311D offers a high level of safety because it can be fully self-locked by braking. This eliminates incidences of slipping on the slope and thus avoids potential safety haz-ards.
