With the new W 250 XF, Wirtgen presents a milling machine that impresses with high milling performance and simultaneously low specific emissions.
Engine power output has been increased by more than 20% compared to its predecessor. The ACTIVE DUAL POWER dual-engine drive makes the milling machine even more powerful and versatile in use, according to Wirtgen. The two 18-litre John Deere engines can deliver a combined peak power output of 900kW.
Meanwhile, MILL ASSIST regulates the power output of the two engines according to demand to ensure efficient performance of the machine. In automatic mode, it consistently ensures the most favourable working balance between performance and costs. It also allows the selection of three working strategies that optimise the process in respect of costs, performance or quality.
The W 250 XF demonstrates its full potential especially in ‘performance-optimised’ mode. There is a choice of three different engine power combination modes that can be selected to meet the requirements of specific milling tasks. For instance, only one engine is used when removing concrete or brittle materials. When the task requires the removal of a surface layer and high surface quality, the second engine cuts in and operates in the part load range.
In combination mode 3, both engines operate synchronously and deliver the peak combined power output of 900kW. As both engines typically run within the low speed range, their fuel consumption is correspondingly low.
Flexibility is one of the most critical requirements in day-to-day operations on construction sites. The milling drum of the W 250 XF can be exchanged for a Multiple Cutting System milling drum within just a few minutes. The ability to rapidly change to application-specific milling drums with different tool spacings considerably increases machine productivity. At the same time, the choice of the ideal milling drum for a specific application also reduces wear-related costs.
Exchanging the milling drum assembly enables the realisation of milling widths from 2.2-3.8m. With the aid of the quick-change system, the entire milling drum assembly can be changed in less than one hour.
In addition to machine control with MILL ASSIST, the automated documentation of milling tasks with Wirtgen Group Performance Tracker Milling - WPT Milling for short - also plays a major role. The operator is constantly informed about the machine and job parameters. When the work is completed, the data is transmitted to the machine owner who can use it for fast and precise invoicing.
In addition to displaying construction site and machine data, the automated documentation also shows the CO₂ emissions for the entire construction site. The John Deere Operations CenterTM presents all information in real time.
The LEVEL PRO ACTIVE levelling system was developed by Wirtgen specifically for cold milling machines. Clearly readable control panels provide information and measured values from all currently connected sensors and ease the machine operator’s workload. The system is fully integrated in the control system of the cold milling machines and, as essential machine functions are directly interconnected, provides a high level of automation. The system also offers numerous automatic and additional functions that make the machine operator’s job easier, for instance, automatic lifting for driving over manhole covers.
The cabin is constructed as a ‘positive pressure’ system in which the air is cleaned by a filter system and the temperature is controlled by an automatic air conditioning and heating system. It provides protection not only against noise emissions, but also against weather conditions such as wind, rain, sun, heat and cold. It also prevents dirt, dust and hazardous substances getting into the cabin.
