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BOMAG launches new 4 - 5 t class tandem rollers with integral compaction control technology

Another world première from BOMAG: At INTERMAT 2012 hall 3 stand C041/042, the renowned Boppard construction equipment manufacturer will be showing its new tandem rollers in weight classes 3.9 t to 4.3 t for the first time. The 5th series of the BW 135 AD-5, BW 138 AD-5 tandem and BW 138 AC-5 combination model boasts a new design with powerful, water-cooled 4-cylinder KUBOTA engines; comprehensive, integrated BOMAG ECONOMIZER measuring technology; all-round vision and ergonomic operator's platform plus proverbial BOMAG compaction performance.

The powerful exciter system with an amplitude of 0.5 mm and high performance hydraulics underpin the top compaction performance. Drum diameter has been increased to 900 mm providing even better surface quality.
The major new feature on the 5th series is the BOMAG ECONOMIZER display. The ECONOMIZER system enables continuous control of the compaction process. Increasing compaction is indicated by an increasing number of illuminated yellow LEDs on the display. Maximum compaction is achieved when the number of LEDs does not increase with repeated passes. This way the operator knows no more passes are needed- saving the contractor time and money. If the number of yellow LEDs suddenly drops, this indicates weak spots in the material. These areas can now be detected and remedied immediately. A red LED is a warning of over-compaction. The result: high compaction quality across the rolled area.

The new tandems feature extra capacity water tanks for the sprinkler system holding up to 310 litres. The combination of the water-saving concept, fine spray nozzles and automatic sprinkler control means water is saved and tank refill intervals are also significantly longer. A reliable membrane pump supplies the drums with water even when windy or the roller is in a transverse position. The spring actuated scrapers give optimum distribution of water, and are easily accessible and quick to clean.

Clear all-round vision and easy handling
Easy handling and the all-round view are the keys to good workmanship. The deep-set engine bonnet and angled frame offer excellent visibility ahead and to the lower edge of the drum - without the driver needing to leave the seated position.

All models offer the operator space and leg room. The vibration-insulated suspended operator’s platform is easy to access; the adjustable seat and matching armrests shift sideways and feature a double travel lever as standard. All operating controls are clearly arranged with durable rotary switches on the dashboard and which are operated intuitively.
The dashboard also includes modern circular instrument displays with audible warning signals, an operating hour counter, as well as a diesel level indicator. In addition to customary steering features, such as larger steering wheels, the newly designed Smart Drive steering wheel provides an uninterrupted view of the dashboard; and with the multifunctional control lever it forms a unit that is ergonomic and convenient, highly functional and precise.

Transport is easy too. Large easy access lashing rings, a practical single lifting point and integrated towing hook secure the rollers and reduce loading times. The hood is high-impact resistant plastic with high stability. The gas loaded, folding ROPS handle is now also standard.



BW 138 AC-5, new tandem roller of the 4-5 t class
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