HD 30 and HD 35 compact rollers from HAMM:
Premium quality also for small construction sites
HAMM is adding six new compact rollers to its range of rollers "from China for China". Manufactured in the WIRTGEN China factory in Langfang, the new models have been tailored in every detail to meet the requirements of the local market.
HAMM rollers in the HD CompactLine are used worldwide. Now, HAMM has developed six models in this series of versatile and highly compact tandem rollers specifically for the Chinese market. They are easy to operate and fast to load, combining high productivity with low operating costs. The HD 30 in the 3 t class has a 1.00 m drum width, while the HD 35 has a 1.20 m drum width and belongs to the 3.5 t class. In both versions, the rollers are now available as a double vibration roller (VV), an oscillation roller (VO) and a combi roller (VT). All models are powered by a 22.6 kW Kubota engine that complies with the CN III exhaust emission standards.
Thanks to the typical HAMM wasp waist design, the visibility is unrivalled. The driver has an unobstructed view of the drums and immediate surroundings at all times. Due to the intelligent design of the engine hood, the area in front of the machine is always clearly visible, too.
Top compaction power
The rollers in the HD CompactLine also deliver impressive compaction power. This is due primarily to the large drum diameters: they help to actively prevent the formation of fissures and bulges while promoting high compaction quality. Moreover, the rollers in the HD CompactLine have a high static linear load and generate very large centrifugal forces. Another bonus is the ease of handling when manoeuvring along walls and kerbs since the drums in the HD 30 and HD 35 rollers can be offset by up to 50 mm relative to one another. This allows the HD CompactLine models to perform compaction right up to various types of boundaries.
Homogeneous weight distribution
The 3-point articulation ensures uniform weight distribution over both axles. It also enables a very small turning radius along with exceptional driving comfort. Thanks to the articulated joint and low centre of gravity, the rollers in the HD CompactLine have great resistance to tipping, too, even in tight corners.
The water system in the HD CompactLine has been designed for high quality and productivity in every respect. The water undergoes triple filtration with a self-cleaning water filter, a filter on the filler neck and filters before the sprinkling system. The water volume can be adjusted during compaction on the dashboard. In addition, the driver can activate an extra boost of water via the foot switch.The hinged scrapers also help to keep the drums clean. They are fitted as standard in the HD 30 and HD 35 rollers and can be turned on and off via the foot pedal.
Self-explanatory operation, easy transport
Thanks to their self-explanatory operation and clear display of all important operating data using unambiguous symbols, the HD CompactLine rollers are extremely easy to operate. The display does not use any text at all. Accordingly, no language skills are required, which boosts the overall safety level.Transporting the compact rollers is as straightforward as their operation: since the grab handle in the middle of the machine acts as a central lifting point, loading could not be any easier.
HAMM rollers make life easy for the operator not only during compaction, but also in maintenance. For example, the central water outlet is positioned at the lowest point on the machine. One single manual operation is all it takes to completely drain the water tanks in the rear section. In addition, the self-cleaning water filter can be checked in a matter of seconds. The remaining daily checks are also swiftly dealt with since all maintenance points are gathered on one side of the machine and are readily accessible, without any tools, under the wide-opening engine hood.For efficient service, the rollers can be optionally equipped with the WIFMS data interface. Current machine data can be imported into other systems via this standardised interface.In addition, the entire service concept has been tailored to the Chinese market. "Starting in development, we only use wearing and spare parts that meet our quality standards and are also readily available in China," explains Quality Manager, David Pang. "This way, we can keep our customers satisfied over the long lifespan of the machine."
Made in China
The new compact rollers made in China "offer proven and ingenious HAMM compaction technology, fulfil the requirements of our market in every detail and are available with precisely the options that are important here," states Zijie Wang, Head of Development and Design at WIRTGEN China. HAMM staffed the development team with specialists from WIRTGEN China in Langfang as well as from HAMM's parent plant in Germany. The production process has also benefited from this cooperation, for example in the selection of tools or in terms of the type and number of quality inspections. "The processes and equipment in production are aligned with what is used at HAMM's parent plant in Germany. In this manner, we can leverage many decades of experience in the construction of premium rollers and ensure that the machines built in China satisfy the high German standards," notes Production Manager Daniel Dong.