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Arocs: the highly specialised all-rounder among the heavy-duty construction vehicles

It is the out-and-out pro for construction transport: the Arocs from
Mercedes-Benz is a dedicated model series comprising heavy-duty trucks designed specifically for the construction sector. Four years after its world premiere, the Arocs is available in an extremely broad and continually growing range.

The Arocs is available in every conceivable wheel configuration - 4x2 and 4x4, three-axle 6x2 with trailing or leading axle, 6x4 and 6x6. Four-axle versions are available as 8x2 trucks with trailing axle, 8x4, 8x4 with trailing axle, 8x6 and 8x8. The scope of equipment and variants covers steel and air suspension, frames designed primarily for on- or off-road deployment, numerous wheelbases, cabs and engines, three all-wheel-drive systems, platform trucks, tippers, concrete mixer chassis, heavy-duty tractor units and special-purpose vehicles.

Ready-for-use specialists make the choice easier. The Arocs Loader is systematically configured for a low kerb weight and high payload as a two-axle tractor unit or as a concrete mixer chassis. The design factors concerned here include cab, chassis, engine variant and tyres. The Arocs Grounder is an extremely robust specialist for particularly tough applications. Characteristic features are a highly robust frame, multi-leaf parabolic springs with hard compliance characteristics, specially tuned shock absorbers, planetary hub reduction axles and particularly durable rims and tyres with high load-bearing capacity.

Arocs SLT and Actros SLT: dynamic heavy-duty tractor units

The Arocs range culminates in a spectacular heavy-duty tractor unit. A gross vehicle combination weight of up to 250 t, three, four and with a dock axle as many as five axles, two driven axles or all-wheel drive, an engine as strong as an ox with an output of up to 460 kW (625 hp) and 3000 Nm of torque, 16 finely graduated gears of the Mercedes PowerShift transmission – the Mercedes-Benz Actros SLT and Arocs SLT heavy-duty tractor units boast spectacular performance data.

The tailor-made concept for the SLT includes the turbo retarder clutch (TRC) combining hydraulic start-off clutch and retarder in a joint component. The TRC facilitates sensitive moving off and manoeuvring even at the lowest of speeds and as a primary retarder generates 350 kW (476 hp) of braking power. Together with the High Performance Engine Brake generating an output of up to 475 kW (646 hp), the TRC offers the ultimate in safety. The radiator, hydraulic system, the fuel tank with a capacity of 900 litres, the compressed-air chamber and further components are housed in the elegantly trimmed rear cooling tower.

The diverse SLT model variants break down into the two model series Arocs SLT and Actros SLT. The steel-sprung Arocs SLT based on the particularly robust Arocs Grounder is also available with the BigSpace cab as well as the StreamSpace cab measuring 2.3 m in width. The air-sprung Actros SLT is available with the spacious GigaSpace and BigSpace cabs measuring 2.5 m in width. As a high-tech heavy-duty tractor unit, the SLT is designed for a gross vehicle combination weight of up to 250 t. For the construction industry the focus is on it as a semi-heavy-duty tractor/trailer combination for transporting heavy construction machinery. In this case the additional radiator system and optionally also the TRC can be dispensed with. The permissible gross vehicle combination is up to 120 t, or up to a maximum of 155 t with certain restrictions.

More variants, more comfort and yet more safety: the Arocs 2017

The current model range shows how the Mercedes-Benz Arocs continually adapts to customers' needs and wishes. When the Arocs needs to be scaled down at construction sites and entrances, the ClassicSpace LowRoof in M and L variant with a width of 2300 mm is a contender, for example. It is 100 mm lower than the original variant. In combination with the OM 470 engine, 320 mm engine tunnel and ClassicSpace LowRoof, the roof height is even reduced by 280 mm.

The Home Line and Style Line design and equipment lines are now also available for the Arocs with 2.5 m wide cab. The SoloStar Concept with its spacious rest area for the StreamSpace and BigSpace cabs turns the Arocs into a tipper boasting added comfort.

The Arocs also offers new options in the area of the suspension and powertrain. The electrically supported Servotwin steering is now also available for the four-axle Arocs 8x4 and for other wheelbases, for example. The engageable hydraulic starting-off aid HAD (Hydraulic Auxiliary Drive) can additionally be used on semitrailer tractor variants with 3300 mm wheelbase for transporting hazardous goods. New options for the Arocs with HAD are the 320 mm engine tunnel for L cabs and a cover to provide protection from bulk goods in conjunction with the M cab.

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