SINGLE DRUM ROLLERS WITH SMOOTH DRUM

BOMAG ROLLERS AND THEIR DESIGNED CAPABILITY:

LIGHT ARTICULATED TANDEM ROLLER-These machines are generally designed with double drum vibration and double drum drive and normally work with one frequency. The machines range from 3 to 4.5 t with sufficient power to be used behind a paver with in put of 500 to 800m2 per hour on surface courses or300 to 400m2 per hour on base courses, depending on the asphalt mixture. They are therefore specially recommended for this type of application. A part from this there is another type of application for these small self-propelled tandem rollers, which are available in different designs and successfully used.

HEAVY TANDEM ROLLERS

Heavy tandem rollers with operating weights between 6 and 12t are used for the compaction of asphalt surface course, asphalt binder courses, asphalt base course and unbound base courses. They normally work with two amplitudes or two frequencies for an optimal compaction of different lift heights. Heavy tandem rollers are equipped with vibration automatic, a system which switches the vibration off when stopping the machine or when changing the travel direction, thereby avoiding transverse depression and unevenness in the asphalt course. Heavy tandem rollers are available with spit and non-split drums. Split drums reduce the risk of shoving and cracking when compacting in tight curves. Depending on the design one must differentiate between tandem rollers with articulated steering and pivot steering, which enable different modes of steering

COMBANATION ROLLERS:

The combination roller is a combination of pneumatic-tired roller and vibratory roller. The combination combines the advantages of the vibrating drum with the benefits of rubber tires, which have a kneading effect and seal the asphalt surface. One axle of the combination rollers consists of a smooth drum, the other axle carries smooth rubber tires. These rollers are also powered by air cooled diesel engines which drive the hydrostatic travel and vibration system. The rubber tires are driven in pairs by two hydraulic motors, ensuring adaption of the rolling speed differential when driving around curves. Single lever control, hydrostatic power steering as well as vibration automatic ensuring simple and safe operation of large combination rollers.

SINGLE DRUM ROLLERS WITH SMOOTH DRUM

Single drum rollers are self-propelled combination with a front drum and rear tires. The roller types are specially designed for soil combination, where high tractive power and grad ability required besides excellent compaction work. Front frame with drum and rear frame are connected by a central oscillating articulated joint. The rear frame carries diesel engine, drive elements and operator`s stand. The infinitely controllable travel system works hydrostatically via the rear wheel single drum rollers are normally equipped with drum drive. Depending on soil or rock material single drum rollers are used with pad foot drum