The 700 series Lexion models (770, 760, 750, and 740) from Claas feature the APS threshing system (pre-acceleration) with residual grain separation via rotors (APS Hybird), while the Lexion 600 series models (670, 660, 650, 640, 630, and 620) feature APS functionality and residual grain separation via six or five straw walkers (630 and 620 models, respectively).
Integrating the cab from the Xerion and Jaguar machines allowed for a more spacious operator environment than the previous Lexion model, with the design of control center providing the operator with "significantly more" freedom of movement and all-round visibility.
Keeping with the cab, Claas describes it as "an ever-pleasant climate," with a particularly low noise level and a three-way adjustable steering column. The seat's air suspension with automatic height control function independently adjusts to the weight of the driver and effectively dampens vibrations by up to 40%. The active climate control feature ensures optimum ventilation of the cab without exposing the driver to harmful drafts.
The cab is also equipped with a passenger seat that includes an integrated cooler compartment with a folding backrest that can be used as a dining table. The cooler compartment is equipped with a bottle holder and provides a total storage volume of 43 L.
The driver's armrest accommodates an integrated multifunction lever that facilitates smooth adjustment of the machine's ground speed as well as numerous other functions, such as height adjustment of the front attachments, all steering systems, the extension and retraction of the grain tank unloading spout, the cutter bar stop, operation of the reel, and the grain tank unloading system.
Data processing, registration, control, and monitoring are tasks performed by the "significantly enhanced" CEBIS onboard information system. The system displays the current processes at a glance via the color display and summarizes relevant facts and figures.
Functions that can be easily identified and adjusted in the CEBIS system include automatic crop setting, cruise pilot (automatic speed control), the GPS pilot, laser pilot and auto pilot steering systems, yield and moisture measurement systems, the area meter, the fuel consumption meter, the yield mapping function, the performance display, the order management feature, the service interval display, general onboard diagnostics, and the speed monitoring function.
Lexion's telematics system enables data relating to the machine to be retrieved at any time via the Internet. The operations manager can thus identify and optimize performance and harvest data for the fleet of machinery in real time. The operational procedures are transparent and all of the data and information relating to driving behavior can be realized quickly, thus enabling improvement of the entire transport logistics. The documentation process has been simplified and the service data can be transferred quickly to sales partners. An initial targeted remote diagnosis can often be provided in this way.
CEMOS (Claas Electronic Machine Optimization System) assists in harvesting, as the driver always has the correct machine settings to hand in terms of performance, quality, safety, and efficiency. Up to 50 parameter settings, from the reel to the straw chopper, have an influence on the outcome of the harvest. The driver needs to keep a constant eye on around a dozen of such values. CEMOS provides advice on the display with regard to how this data can be constantly maintained in the optimum range. After the driver has confirmed the setting proposals offered by the system, CEMOS automatically conducts the optimized setting of the machine.
The APS Hybrid system in the Lexion 700 series combines two systems for threshing, namely the APS threshing system with pre-acceleration of the crop flow (which can enhance performance by up to 20%) and the Roto Plus residual grain separation system.
A particularly effective residual grain separation process is facilitated due to the speed of the crop flow between the rotors and concaves and the high degree of centrifugal force. The individual adaptation of the overall process to changing operating conditions is thereby also ensured.
The straw walker technology used in the new 600 series ensures that the residual grain separation process only contains around 10% of the grains; 90% is already separated from the straw due to the APS system. The total residual grain separation process is conducted over a length of 4400 mm (173 in).
A new constant pressure hydraulic system, originally introduced for the Jaguar, has also been refined and significantly enhanced in terms of its performance, offering increased efficiency with a new more powerful load-sensing pump, a higher working speed, and longer maintenance intervals.
Working pressure now stands at 200 bar (2900 psi); it was previously 180 bar (2610 psi). The oil delivery volume of the working pump is 120 L/min (32 gal/min). The attachment lifting capacity has been increased by 10% in terms of weight and 50% in terms of speed. The lateral leveling element is now 200% quicker.
The introduction of the Terra Trac system not only allows the machine to clock in at 40 km/h (25 mph) but also allows it to move smoothly across the field. All of the components such as the drive wheel, wheel, and support rollers are spring-mounted separately in the running gear, reducing impacts on the chassis and engine, increasing comfort for the driver, and generating enhanced cornering stability.
All in all, Claas says the system results in increased soil protection (66% better than a wheeled machine), improved traction in wet conditions or on a slope, greater stability for slope work, less tractive resistance, less slippage and thus less fuel consumption, and increased harvesting performance through faster road trips.
New transmissions in the Lexion 670 series and above regulate engine speed during road operation depending on the power requirement, contributing to improved fuel consumption.
Together with the IF tires developed exclusively for Claas harvesting machines from the Ultraflex family, Michelin now also offers a CEREXBIB tire that is within the legally prescribed transport width, yet offers a contact area and ground pressure that is exhibited by much larger tires. The tire, says Claas, is therefore "the perfect link" between standard tires and the track roller unit.