Hamm is introducing new tandem rollers with operating weights of 9-11tonnes. The new HD 90–HD 110 P-Tier models are available either with two vibration drums (VV) or with a combination of vibration drum and wheel set (VT). The machines are initially being launched in Brazil and in the Tier 3 regions of the Middle East, Africa and South East Asia.
With drum diameters of 1,680 mm and high compaction forces, the new tandem rollers are said to deliver optimum asphalt compaction. The firm says that the machines are well-suited for applications demanding a high surface output and compaction quality. In terms of quality, the proven three-point articulation is said to ensure even weight distribution, which prevents impressions from forming in the asphalt. The new models are driven by a powerful 97kW Cummins diesel. Operators also benefit from good visibility, a spacious cab and a range of convenient features including simple controls.
All four new models – HD 90 P VV, HD 90 P VT, HD 110 P VV and HD 110 P VT – feature the sophisticated electronic machine management system, HAMMTRONIC, which is said to boost compaction quality. Other benefits include lower diesel consumption, gentle machine acceleration and braking during compaction, the Constant Speed function and reduced noise levels. With HAMMTRONIC controlling various functions, such as the water sprinkling system or the edge pressing and cutting device, operator errors are avoided. Consequently, compaction results are higher-quality and more homogeneous. With HAMMTRONIC, the tandem rollers operate in the optimum power range, which is adapted to the requirement of the individual drives.
The new tandem rollers are available with options, including a ROPS/FOPS cab with heating and air-conditioning system, a lighting package for working on public highways, the edge pressing and cutting device and powerful LED drum edge lighting. There are also two valuable measuring tools – the Hamm Compaction Meter and the Hamm Temperature Meter – that can be configured to incorporate position-accurate compaction and temperature values into the compaction process. For fast and simple servicing, all maintenance points are readily accessible, providing effective prevention against long downtimes. The tandem rollers can also be connected to the John Deere Operations Center.
