2010-03-11 10:33:49 - In time for the 2010 road building season, BOMAG is launching a new pivot-steered tandem roller in the 10 t class. Based on the successful BW 174 AP, the latest 4th generation model features a host of innovations, including an ergonomic cab and new operating controls. For the first time, BOMAG is displaying the original field-tested model with hybrid drive alongside a pivot steered BW 174 AP with ASPHALT MANAGER.

BOMAG pivot-steered tandem rollers symbolise high performance capability, superb manoeuvrability, exceptional driving and operation, plus great flexibility.

The new cab and controls are exceptional developments
The new "active armrest system", combined with a hand-shaped travel lever, is designed for easy operating use. The consoles are adjustable for different operator heights and inward curving armrests ensure that the operator's arm rests securely to control the roller comfortably throughout long shifts. The combined seat and operating unit can be turned 270° and extended sideways. At the same time, switches integrated in the travel lever and consoles are always within reach of the driver. This allows intuitive operations, maximum safety and reliability.
Fuel efficiency with ECOMODE
With the new ECOMODE, BOMAG now offers users arguably

the most economical roller in its class - in-house tests have shown fuel savings of over 20%. Active engine management provides the roller driver with power only when he needs it, and reduces power when conditions permit. An intelligent sensor system instantly calculates power requirements and the speed of the Kubota engine is automatically adjusted. This also reduces noise levels in the cab.

Smart design on the outside
The high-specification sprinkler system ensures that drums are kept wet even in windy conditions. It offers high protection from down-time with its back-up pump system (diaphragm pumps), central drainage and triple filtering. A water saving feature combined with a tank capacity of 750 l means that active work periods can be extended.
Protection from vandalism rounds off this well thought-out unit. Great care has been taken to prevent damage – the cab doors, engine compartment doors, water tank and diesel tank can all be locked.
Rollers are frequently moved between sites, which means they must be easy to tie down on truck beds. The BW 174 AP-4 has newly designed lashing eyes and tow hook that make it even easier to load and secure the roller.

Options – they are all here
The standard equipment alone is impressive: ECOMODE, comfort cab, new operating features, road traffic lighting and brake release device. Plus a wide range of options.
Our new roller has an array of new options, such as a second edge cutter, a 230 V generator, by-pass filter, special outside mirror, electronic theft protection and the "BOMAG TELEMATIC" telemetry system. This transfers operational data and can also track and provide theft protection. The system does more than just display the current position on a map. Virtual "fences", also called geofencing, can be defined so the system recognises when boundaries are crossed and will send warnings by text and e-mail.
The new BS180-2 chip spreader is an impressive addition to the option package. Based on the proven and patented vibrating screed with linear exciter, it is perfectly suited to work on this new roller. It features uniform and accurate spreading, generous storage capacity of 900 l, durability and reliability - ideal for everyday use on tough sites.

Future technologies
The BW 174 AP AM marks the first time that BOMAG has shown its original field-tested unit with hybrid drive. In addition to conventional drive components, the "hybrid roller" has an electric motor generator, a high capacity battery and associated electronics. Operation is simple and efficient: the battery is charged in generator mode - e.g. when braking (reversing) or during vibration shutdown - using the difference between the power generated by the engine and the power take-up. Any unused power is stored. Power peaks are levelled out when the electric motor takes power from the battery e.g. when switching on vibration or during acceleration. This reduces engine size in its performance class (maximum performance) - classic downsizing which means there is no need for more complex exhaust gas treatment systems. At the same time, the engine always operates at optimum performance and efficiency. This lowers fuel consumption significantly, and associated CO2 emissions. Initial tests show a fuel saving of up to 30%.