CLAAS Omaha LLC, introduces the Lexion 500 Series Combines, which include the world's largest combine. The combine was on display for the first time at the Farm Progress Show 2004, in Alleman, Iowa.

With this addition, the Lexion line of combines now includes seven different models, ranging in size from Class 6 to Class 9.

“Our new Lexion combine series was developed by carefully monitoring the wishes of North American farmers,” says Theo Freye, general manager, CLAAS Omaha LLC — Lexion Combine Division. “The engineering of these combines builds upon the superior performance standards of the Lexion 400 Series to meet even higher expectations and to provide the highest return on investment. We want Lexion to stand for unmatched performance, durability and support.”

Available in rotary or straw walker configurations, as well as tracked or wheeled models, the Lexion 500 Series delivers a wide range of engineering enhancements and innovations.

Threshing/separation

Exclusive to Lexion, the Accelerated Pre-Separation System delivers crop to the main threshing cycle at a constant speed, angle, width and thickness so that the main threshing cylinder can operate at maximum efficiency. Up to 30 percent of grain separation occurs before it even reaches the threshing area.

The RotoPlus Rotary Separation System consists of a multi-crop paddle rotor with unique rippled grates that can handle all types of field conditions. An optional variable speed rotor drive is available for even better separation and optimized grain quality.

The 5-Straw Walker Separation system on the Lexion 560 model provides a new standard Multifinger Separation System (MSS) to better support straw walker separation performance.

A new Jet Stream cleaning system (available on the Lexion 580R, 585R and 590R models) features higher wind pressures and more precise distribution. Increased pre-cleaning cascade action relieves the cleaning shoe load before foreign material hits the sieves. Electric sieve adjustments now are standard on all models, and 3D slope compensation is optional. MAV chopper technology spreads chopped residue up to 40 foot widths. (Higher performance cleaning is delivered on smaller Lexion “non Jet Stream” combines via TM6 sieves.)

Drivetrain/engine

Reliable Caterpillar technology (up to 462 hp, 3126B, C-9, C-12, and C-13 engines available) drives new suspended Mobil-Trac or wheeled axles, including an optional, increased capacity, two-speed powered Mudhog rear axle. Electro-hydraulic shifting is done by the press of a button. An increased fuel tank capacity of 210 gallons meets the need for greater in-the-field productivity.

A larger cab includes a variety of operational improvements, such as wider operator and trainer seats, icebox, climatic air conditioning, new multi-function lever, and an improved ergonomics in console layout. All machine settings are adjustable from the cab and are set through its standard electronic board information system (CEBIS).

The industry's largest attachments now available directly from the factory feature the F540 with new MaxFlex cutting system on a 40-foot flex head and a 16-row corn head for 30-inch row spacing. (25-foot and 30-foot flex head models and 6-, 8-, and 12-row corn head models are also available.) The multi-link coupling system uses a single unit to make head-to-combine connections simple, fast, self-sealing and contamination-free. The combine features a variable speed feederhouse with an improved heavy-duty reverser.

An increased grain tank capacity of up to 360 bushels leads to fewer unload stops. On Jet Stream cleaning system models, the tank features hydraulically-foldable grain tank extensions that keep rain out of empty grain tanks. The clean grain elevator, with improved wear characteristics, is enlarged, and an increased capacity unloading rate system of up to 3.3 bushels/second is available.

The 26-foot unload auger is the longest in the industry.

For more information contact CLAAS Omaha LLC, 8401 S. 132nd Street, Omaha, Neb. 68138 (telephone, 402-861-1000; fax, 402-861-1003; e-mail, contactus@claas.com; Internet, www.lexioncombines.com).