The six-cylinder engines with 7,7 to 15,6 litres of capacity and 1.000 to 3.000 Nm can also be had in the Actros. The name 'Arocs' relates e.g., apart from the more fearsome radiator grille and the mesh protected headlamps, to the interior design, which presents itself as being easy to care for. In the Actros a maximum of two axles can be driven, the Arocs can have up to four. Thereby, more differential locks are possible and it is still easy to operate. Its chassis is more rugged, but through a higher torsion ability, it is better adapted for work on construction sites.
Instead of asking about the difference between the Actros and the Arocs, one should rather ask about heavy duty traction machines. As indicated in the above video, the load to be towed is what it's all about. This could be at a maximum of 41-, or for export, 48 t of tare weight, up to 250 t of pay load. In this case, at least 16 axles, each with a load bearing capacity of 16 t, would be necessary, but only if there is an ideal weight distribution.
The high amount of torque is partially reached als0 through a turbine mounted subordinate to the normal turbo-charger, which drives the crankshaft at a certain ratio and with the respective hydraulics (TurboCompound technology).
At this point, one has to learn from Mercedes, that previously, heavy-load transporters never had the 16-speed automatic gearboxes that were found in road-transporters. One can quite easily work it out, that both the slow driving procedure and the steering were given particular consideration. The back-board of the cabin can be seen in the above pictures, it shows the special demands made on the cooling, e.g., also the turbo-retarder. Also found here, are the aluminium fuel-tank (900 litres), the compressed-air tank, and the fuel- and hydraulics cooler. 07/15