The GRW 280i ballasting concept
HAMM has also further increased the flexibility of the GRW 280i in terms of machine weight: Thanks to a modification to the ballast space between the wheelsets and the open-bottomed compartmented frame with inserts, ballasting the roller is now even easier. Prefabricated steel, magnetite or concrete ballast bodies can be inserted or removed using a forklift truck, for example. HAMM offers custom-designed ballast body kits for this purpose. In addition, each customer has the facility to fit the roller with his own ballast bodies. This enables great flexibility in terms of machine weight adjustment. Thanks to the ingenious arrangement of the ballast space, the load is always evenly distributed over both axles – the perfect prerequisite for top-quality compaction.
Sophisticated driving characteristics for optimum compaction
A hydrostatic rear-axle drive on the GRW 280i enables a good travel speed – both when being moved as well as during compaction. The driver is able to set the desired speed for any working situation by means of a sensitive electronic control. In addition, a pre-selection wheel on the control panel allows easy setting of the prescribed working speed. Furthermore, the intelligent drive control provides the basis for top-class compaction results: Automatic soft ramps enable gentle, even braking and acceleration. This driving characteristic guards against uneven compaction. To match the high top speed of the GRW 280i, a newly designed front steering axle with disc brakes provides the braking power needed and ensures a high level of safety when travelling fast, even when carrying the maximum ballast load. The optional anti-slip control ensures optimum traction when working on uneven ground as well as on surfaces with varying temperatures.