Clear advantage of the dual engine concept on the Wirtgen W 250i: Milling with one engine at 610 hp (619 PS) or two at 1,010 hp (1.024 PS) in line with power requirements reduces operating costs.

Wirtgen's large milling machines are the machines of choice for renewing large asphalt or concrete surfaces. With working widths of 4 ft. 11 in., (1.5 m) to 14 ft. 4 in. (4.4 m), these machines feature innovations that further optimize cost efficiency.

Large Milling Machines in All Weight and Milling Performance Classes

The highest horsepower machines can do more than just remove asphalt or concrete pavements layer by layer down to a maximum working depth of 14 in. (35 cm). They also can roughen surfaces, level substrates, produce plane surfaces with millimeter accuracy and remove tunnel floors. The variety of applications these large Wirtgen milling machines can handle is immense, as is the flexibility with which they adapt to individual milling jobs. Designed for high performance, they do their job with high productivity and cost-efficiency due to pioneering technologies, according to the manufacturer.

Modern Technology for Diverse Applications

The twin-engine drive of the W 210i and W 250i, for example, is unique among cold milling machines. With two diesel engines, the machine operator can utilize engine power on demand when needed, reducing fuel costs by up to 25 percent compared to a comparable, conventional drive system.

The parallel-to-surface (PTS) feature automatically positions the large milling machines parallel to the road surface, ensuring simple and flawless machine operation for high-quality profiling work. This automatic function carries out all the steps an operator would otherwise have to select individually. Automating the process of lowering the machine into the milled cut helps to avoid excessive tool wear or breakage as milling begins, while greatly simplifying the operator's job.

Another example is the intelligent speed control (ISC) system. Like a traction control system in a car, ISC minimizes spinning of the crawler tracks, enabling optimum traction in each one so the machine can achieve its optimum milling performance. ISC displays its strengths most effectively on demanding milling jobs, according to the manufacturer.

With its operator comfort system (OCS), Wirtgen sets new standards in operating convenience and user-friendliness. The hydraulic moving and swiveling cabin is the heart of OCS. It can be positioned quickly and effectively to give the machine operator the best possible view at all times. The high-quality equipment inside the cabin leaves nothing to be desired: Camera transmission, precision joystick control, and a powerful automatic climate control system provide for optimum working conditions in any weather.

Dual Conveyor Belt

New practical solutions further optimize the performance and cost-efficiency of its large milling machines. One entirely new development is the integration of a dual conveyor on the most powerful milling machine, the W 250i. Two, parallel belts uniformly accelerate the milled material, transferring it in a compact stream to the waiting truck.

Numerous other advanced features — such as the camera system, operator consoles, scraper activation system and job data processing, help to make large cold mills from Wirtgen even more productive and profitable, according to the manufacturer.

For more information, visit www.wirtgen-group.com/america.

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