The new W 250 XF cold milling machine delivers maximum performance and productivity
With the new W 250 XF, Wirtgen has developed a machine that delivers high milling performance and simultaneously low specific emissions. Wirtgen introduced the W 250 XF at bauma in April. It’s introduction follows the W 210 XF, which began working on jobsites earlier this year.
The engine power output of the new W 250 XF has been increased by more than 20 per cent compared to its predecessor. The Active Dual Power dual-engine drive makes the milling machine even more powerful and versatile in use.
The two 18-litre John Deere engines can deliver a combined peak power output of 900 kW. Wirtgen and John Deere worked in close collaboration on the fine tuning of the torque characteristic of the engines to meet the specific needs of the cold milling process.
The improved torque characteristic guarantees lower fuel consumption and fast, productive work, even at the machine’s maximum milling depth.
Mill Assist
The integrated Mill Assist machine control system regulates the power output of the two engines according to demand to ensure efficient use of the machine. In automatic mode, it ensures a working balance between performance and costs. It also allows the selection of three different working strategies to optimize the process in respect of costs, performance or quality.
The W 250 XF demonstrates its abilities in performance-optimized mode. The milling machine offers a choice of three engine power combination modes that can be selected to meet the requirements of specific milling tasks. For example, 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, both engines operate synchronously and deliver the peak combined power output of 900 kW. As both engines typically run within the low-speed range, their fuel consumption is correspondingly low. The large milling machine is ideal on jobs with high daily output rates such as motorways, arterial roads, airports and other major construction projects.
Milling widths
The W 250 XF offers milling widths of 2.2 metres to 3.8 metres. 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 (MCS) milling drum within minutes.
The ability to rapidly change to application-specific milling drums (with different tool spacings) considerably increases the machine’s productivity. At the same time, the choice of the ideal milling drum for a specific application also reduces wear-related costs.
Wirtgen offers a range of milling drums for the W 250 XF to meet the needs of any milling application. With the aid of the quick-change system, the entire milling drum assembly can be changed in less than one hour.
Operator comfort
At bauma, Wirtgen exhibited the W 250 XF with a fully enclosed comfort cab. The comfort cab 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, and prevents dirt, dust and hazardous substances from entering the cab.
The W 210 XF
The new W 210 XF large milling machine has been available and working on construction sites since January.
The W 210 XF can handle a broad spectrum of applications, ranging from surface layer rehabilitation and full-depth pavement removal to fine milling.
Thanks to its high daily output, the W 210 XF is the ideal choice for milling on motorways, arterial roads, airports or other major construction projects.
Powered by a John Deere engine with a maximum power output of 580 kW, the W 210 XF delivers powerful and efficient milling performance in every situation. Wirtgen and John Deere worked in close collaboration on fine-tuning the engine’s torque characteristic to meet the specific needs of cold milling applications.
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The combination of the engine and the Dual Shift two-speed powershift transmission enables a wide range of milling drum speeds. The lower range enables significant reductions of fuel consumption, pick wear and noise emissions. The upper range makes it possible to achieve high area performance with a high-quality milling pattern, even at the maximum milling depth of 330 mm. This means that the W 210 XF is ideally equipped to tackle demanding milling tasks with maximum sustainability.
Wirtgen offers a range of milling drums for the W 210 XF to meet the requirements of any milling application.
The quick-change milling drum assembly enables the use of milling widths of 2 metres, 2.2 metres or 2.5 metres. With the aid of the quick-change system, the entire milling drum housing can be exchanged in less than an hour.
Like the W 250 XF, the W 210 XF features the Mill Assist machine control system to deliver efficiency on every construction site.
Wirtgen tech
In addition to machine control with Mill Assist, both large milling machines are equipped with the automated documentation of milling tasks with Wirtgen Group Performance Tracker Milling (WPT Milling). Maximum efficiency is achieved by combining the two digital solutions. The operator is kept constantly informed about the current machine and job parameters, and when the work has been completed, the data is transmitted to the machine owner, who can then use it for fast and precise invoicing.
In addition to displaying construction site and machine data, the automated documentation also shows the carbon dioxide emissions for the entire construction site. The John Deere Operations Center delivers 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.
