Wirtgen To Premiere W 220 Fi & W 250 Fi Flagship Milling Machines At CONEXPO

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Wirtgen’s versatile new W 220 Fi can perform fine milling work, surface course rehabilitation, and even complete surface removal. (Photo courtesy of Wirtgen.)

Cold milling machine manufacturer Wirtgen intends to introduce its new F Series flagship models to the roadbuilding industry at the CONEXPO-CON/AGG show in Las Vegas, Nevada this March 10 to 14. The two large milling machines, the W 220 Fi and W 250 Fi, are versatile enough to perform fine milling work, surface course rehabilitation, and even complete surface removal. Wirtgen’s Multiple Cutting System allows the machines to use drums that are 7 feet, 3 inches (2.2 meters), 8 ft, 2 in (2.5 m), or 12 ft, 6 in (3.8 m) wide.

Push-Button Texture Quality

Both the 801-horsepower Wirtgen W 220 Fi and the 1,010-HP W 250 Fi are front-loading, Tier 4 Final models that can mill down to a depth of 14 inches (350 millimeters). The driver can choose a “working strategy,” or mode of operation, such as to achieve a preset milling texture quality that’s coarse (level 1), very fine (level 10), or somewhere in between. Other working strategies prioritize cost savings or maximum performance.

The milling machines utilize the Wirtgen Performance Tracker, a system that reports on performance and consumption data on the job. The information appears on the operator’s display during operation. After the job is completed, a full report is automatically sent out via email. The data WPT tracks includes the milling volume, the performance of the milling operation, and the amount of fuel the machine consumes.

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Like its sibling, the Wirtgen W 250 Fi can mill down to a depth of 14 inches. (Photo courtesy of Wirtgen.)

Mill Assist By Model

The Mill Assist helper system comes standard on the W 220 Fi and W 250 Fi. It provides an automatic mode that seeks to balance performance against the costs of operation. Wirtgen says that Mill Assist can improve milling performance while also cutting carbon dioxide emissions, as well as reducing diesel, water, and pick consumption.

The two milling machines have very different drive systems, however, so Mill Assist works with each in a specific way. The Wirtgen W 220 Fi comes with a two-speed Dual Shift powershift transmission, for example. Mill Assist takes intelligent control of the powershift and works with the milling machine’s engine to give the milling drum higher and lower running speeds. Lower drum speeds can reduce fuel consumption and pick wear; higher speeds maintain milling pattern quality under challenging circumstances.

On the W 250 Fi, which has an Active Dual Power two-engine drive, Mill Assist automatically controls one or both motors based on the operator-selected working strategy and the type of job at hand. With the engines running at the most efficient speeds, Mill Assist can conserve fuel and prolong the life of the cutting tools.

Source: Wirtgen

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