Hamm, the compacting experts from the Wirtgen Group, presented the updated compact articulated tandem rollers and the new compactor range 311 at bC India.
CompactLine, Hamm’s series of compact articulated tandem rollers with weights ranging from 1.4 to 4.2 tonne, has been on the market and selling well for over four years now. The series includes 11 models that have made a name for themselves on construction sites around the world as versatile and practical compaction machines. Hamm has now updated the range and enhanced many of the machine’s plus points. The drive train has been redesigned at the same time. As one would expect, Hamm’s latest CompactLine models include plenty of innovative features.
Key features of the CompactLine include its excellent visibility, low profile and ease of handling. Other reasons for the success of these compact rollers are their superb driving characteristics, high compaction force and low centre of mass. These always have been and always will be the strengths of Hamm.
Hamm has now enhanced the internal aspects of the series: with the new, exceptionally quiet, environmentally-friendly yet powerful Kubota engines, engine power is increased in all machines with a roller drum width of more than 1 m. In the HD 13 and HD 14 models, in particular, Hamm has succeeded in increasing engine power by around 15 per cent. The new drive train components have brought about only minor changes to the external design of the machines. They retain their `wasp waist` and superb visibility.
A throttle lever with newly integrated intermediate indexing enables the engine speed and thus, the speed of the vibration drive of the new models to be adjusted. The vibration frequency can now be adjusted using a handle.
The operator platform is fully insulated against vibration, thus improving comfort levels. The operator’s seat, steering column and tread plate are mechanically isolated from the framework, which significantly reduces vibration and makes working with the CompactLine even more pleasant. Additional handles in the vicinity of the operator’s seat will in future make it easier to climb up to the operator platform and will provide handholds when climbing down. Last but not the least, a new mechanism makes the folding ROPS frame easier to operate, thus speeding up transportation.
The new engines and changed layout of the central electrics will mean quicker servicing and simpler maintenance in the future. The most important modification is, all service points for the drive units are located on the same side. This means that they are quicker and easier to check than before.
Numerous small improvements in the details and a new layout of the central electrics in the steering column will lighten the load for service engineers when working in this area, and will also make inspection and fault- finding easier.
The powerful machine, specially designed in Germany in co-operation with Indian engineers for the Indian market, is now produced at the new compactor factory in Pune. The compactor with 11-tonne operating weight impresses with numerous technical highlights. The three-point pendulum articulated joint is particularly noteworthy. It gives the machine excellent driving and steering characteristics, an unsurpassed directional stability and offers the best driving comfort. At all times, a modern display informs the driver about the machine condition and guarantees simple operation. The construction site and all important points of the machine are always in the compactor driver’s view from the platform.
Hamm, one of the largest compactor manufacturers in the world, has optimally motorised the new compactor with a high-quality water- cooled Cummins unit (performance: 76 kW). The engine is easily accessible from the appealingly designed carbon fibre bonnet, a significant advantage over the heavy bonnets usually found in India until now. The relevant service points are all easy to access for regular checks.