Maximum wear resistance
A big advantage of the HAMM oscillation drums lies in the high-quality drum shell. It is inevitably subject to greater stresses than is the case with vibration drums, due to the uninterrupted ground contact. Thanks to ongoing product and material development, the operating life of HAMM oscillation drums is today nearly the same as that of vibration drums. This is made possible by using highly wear-resistant fine grain steel for the drum shell. What is more, the material thickness is more than 50% greater than that of comparable competitive machines. In addition, an integrated reinforcing ring ensures that the drum is extremely hard-wearing. This is why HAMM confidently provides a remarkable warranty against wear of at least 4000 operating hours. With this warranty, the Tirschenreuth-based manufacturer surpasses any other serious offer on the market by a wide margin.
Quality thanks to chamfered drums
To ensure that the drums leave no impressions in the still soft asphalt, especially in curves, HAMM gives all drum edges a slight chamfer. Impressions of this nature have to be re-rolled afterward, wasting time. Otherwise, they remain visible in the asphalt and compromise quality. Both issues are avoided from the outset thanks to HAMM's design solution. Incidentally: This chamfer can also be found on all of HAMM's vibration drums. A small yet effective detail that ensures top quality.