LEXION 770-750


Engine output: 419 - 524 hp
Cutterbar: 7,69 - 12,27 m
Drum width: 1700 mm
Residual grain separation: 2 rotors
Grain tank: 10000 - 13500 l

LEXION 770-750


Engine output: 419 - 524 hp
Cutterbar: 7,69 - 12,27 m
Drum width: 1700 mm
Residual grain separation: 2 rotors
Grain tank: 10000 - 13500 l

EASY. Simply more.

LEXION 770-750

EASY stands for Efficient Agriculture Systems, and it lives up to the name. From machine optimisation with CEMOS AUTOMATIC to guidance systems and fleet management via TELEMATICS to farm management software, EASY makes it all simple. Your systems can be matched perfectly with each other, enabling you to get the best performance from your machines and your operators – and therefore top results for your business, too.


The task of assessing the grain quality, that is to say assessing the proportion of broken grains and non-grain constituents (NGC) in the grain tank, calls for a certain level of experience and a high degree of concentration on the part of the operator. NGC consist of straw, chaff, ear tips and dust). The GRAIN QUALITY CAMERA, which is fitted on the elevator head, is capable of assessing the crop visually and is available for the LEXION 770 and 760.

Automatic image evaluation.

The images captured by the GRAIN QUALITY CAMERA are evaluated continuously in a fully automatic process. Thanks to the position of the camera on the elevator head, the data obtained are very reliable as the material has not been segregated and the camera acquires a direct image of the crop flow.

LEXION 770-750


CEMOS is the CLAAS umbrella term for all the systems which optimise machine performance. There are two different versions of CEMOS:

  1. Dialogue-based systems, such as CEMOS DIALOG or CEMOS Advisor. These guide the operator through a number of steps in order to achieve the optimum machine configuration. This process requires the operator to confirm the suggested settings or apply them manually.
  2. CEMOS AUTOMATIC, the term which covers various functions which optimise the machine and a particular process entirely automatically. All the operator has to do is activate the automatic system. The functions include AUTO CLEANING, which optimises the cleaning process, and AUTO SEPARATION, which optimises the ROTO PLUS residual grain separation.

Harvesting instead of adjusting.

All the CEMOS AUTOMATIC functions adjust the machine continuously and automatically in line with the current harvesting conditions and enable maximum throughput with top grain quality and cleaning while keeping fuel consumption to a minimum. All the operator has to do is activate the automatic functions.


  • Automatic separation and cleaning.

    AUTO CLEANING optimises the cleaning process by adjusting the following:

    • Fan speed
    • Upper sieve opening
    • Lower sieve opening

    AUTO SEPARATION acts on the ROTO PLUS residual grain separation system and adjusts the following:

    • Rotor speed
    • Rotor flap position
  • Functional principle.

    Simple, but remarkably effective: when the combine starts work in the field, AUTO CLEANING and AUTO SEPARATION configure the machine to comply with certain preset values, quickly establishing the optimal setting for the working systems. This optimum setting is repeatedly checked and continuously adjusted, taking account of the changing harvesting conditions throughout the course of the day. In this way, AUTO CLEANING and AUTO SEPARATION carry out continuous readjustment on a scale which no operator would be able to achieve manually.

  • Four optimisation strategies.

    The operator has a choice of four optimisation strategies:

    • Maximum throughput
    • Minimal fuel consumption / straw quality
    • High grain quality
    • Optimum balance

    The selection made by the operator specifies the result which AUTO CLEANING and AUTO SEPARATION are to attain in accordance with the required strategy. In order to do this optimally, the cleaning and residual grain separation settings are adjusted automatically by the AUTO CLEANING and AUTO SEPARATION functions respectively.

  • The operator has full control all the time.

    AUTO CLEANING and AUTO SEPARATION operate systematically on the basis of the CEMOS DIALOG software. The operator can intervene at any time and use the dialogue with CEMOS to establish the correct setting. Both automatic systems remain active in this situation.

    Of course, it is still possible to carry out continuous manual adjustment of residual grain separation and cleaning in CEBIS. The automatic functionality is shut down temporarily when this is required.

    Operating the AUTO PILOT button on the multifunction control lever / CMOTION once again reactivates AUTO CLEANING and AUTO SEPARATION.

    Furthermore, it is possible to fully enable or disable the automatic function. It is also possible to activate or deactivate AUTO CLEANING and AUTO SEPARATION independently of each other.

  • Display and operation.
    LEXION 770-750

    AUTO CLEANING and AUTO SEPARATION can each be controlled and monitored via the machine's CEBIS terminal or the CEBIS MOBILE terminal. The CEBIS MOBILE terminal provides the operator with a permanent overview of all the functional units of the machine and their settings. The machine's CEBIS terminal can only be used to control the units; it does not provide an overview of them.

LEXION 770-750

NEW: Fully automatic grain cleaning.

The combination of the GRAIN QUALITY CAMERA with the two CEMOS AUTOMATIC functions AUTO CLEANING and AUTO SEPARATION, means that CLAAS has set a new milestone on the way to the automation of combine harvesting.

The GRAIN QUALITY CAMERA evaluations now have an active influence on the AUTO CLEANING and AUTO SEPARATION functions of the CEMOS AUTOMATIC system.

How it works:

The evaluation by the GRAIN QUALITY CAMERA shows the proportion of broken grains as well as the proportion of non-grain constituents (NGC). This information is shown on the CEBIS screen in graphical form, either directly in the live image or in the harvest display. The operator can set the required level of grain cleaning by adjusting the sensitivity. AUTO CLEANING and AUTO SEPARATION now optimise the cleaning and residual grain separation continuously if the desired level has not yet been attained. The GRAIN QUALITY CAMERA, which is available to support this process, can be switched on and off in CEBIS.

LEXION 770-750

CEMOS DIALOG has the right setting.

CEMOS DIALOG fulfils the wish for an assistant capable of finding the right combine settings every time, balancing performance, quality, safety and efficiency. The specified values from CLAAS in the crop log are a good average value for nearly all harvesting conditions, but there is usually room for optimisation. CEMOS helps to utilise this potential consistently.


CEMOS uses colour to present the setting suggestion for modification of throughput monitoring: green = positive change, red = negative change.

The menu structure:

  1. Returns volume
  2. Grain content in returns
  3. Residual grain separation throughput monitoring
  4. Cleaning throughput monitoring
  5. Status display
  6. Extensive help function
  7. Exit menu
  • A working dialogue.

    The operator assistance system runs on the external terminal (CEBIS MOBILE). CEMOS DIALOG guides the operator to the best settings using a screen dialogue.

    The optimisation occurs in three steps:

    1. The operator requests a suggestion for a setting (for example, to reduce losses)
    2. CEMOS DIALOG makes a logical setting suggestion
    3. The operator accepts this setting suggestion or rejects it

    Steps 2 and 3 are repeated until the operator is satisfied with the result or CEMOS DIALOG has no further suggestions. Equipment adjustments (such as fan speed) are performed by CEMOS DIALOG where possible but must always be confirmed by the operator. There are no automatic adjustments without operator control. Nearly every instance of CEMOS DIALOG offers comprehensive help. If a manual adjustment must be made, CEMOS DIALOG uses a graphic to explain the setting procedure to the operator.

  • Straw management integrated in CEMOS DIALOG.

    CLAAS has introduced a new, convenient adjustment function for SPECIAL CUT in the new LEXION model series. Both the static knife array and the friction concave plates can be pivoted in and out from inside the cab. If the chopping quality is unsatisfactory, CEMOS DIALOG suggests measures to improve it.

  • All units at a glance.

    CEMOS DIALOG is controlled and displayed via the additional CEBIS MOBILE terminal which shows an overview of all units with their current settings. All the text items as well as colour graphics relating to the adjustment options appear on the display.

LEXION 770-750

More safety and reliability. Automatic crop flow monitoring.

What can we do to make harvesting operations safer and more reliable? In extreme harvesting conditions, the operator has to concentrate fully all the time to be able to ensure trouble-free operation. It is often the case that there are only a few days during which grain can be harvested while at optimum quality – and it is precisely then that every minute of operation counts.

Fast response.

If a preset slip limit is exceeded, the following measures are triggered automatically:

  • Cutterbar brake is activated
  • Feeder unit and front attachment are switched off
  • Cruise control or CRUISE PILOT: speed is reduced to 1.5 km/h if the systems are active
  • Grain tank discharge is switched off if it is active

These measures ensure that no more crop material enters the machine. This reduces downtime resulting from blockages or damage.

LEXION 770-750

Operate at the performance limits.

The automatic crop flow monitoring function is intended to support the operator in operating the machine at its performance limits. It provides the necessary safety margin by automatically monitoring the components relevant to the crop flow and initiating the necessary measures.

LEXION 770-750

NEW: AUTO SLOPE. Automatic fan control.

Hilly terrain calls for extra concentration on the part of the operator. This is precisely why the AUTO SLOPE function provides support for adjustment of the cleaning system. If the machine is operating uphill, the fan speed must be reduced in order to avoid grain losses from the sieve pan.

On the other hand, during downhill operation, the fan speed must be increased to maintain the crop flow in the cleaning system and so ensure that the grain is separated. AUTO SLOPE now adjusts the fan speed to the conditions, the starting point being the fan speed set beforehand by the operator.

LEXION 770-750

CRUISE PILOT: automatic forward travel control.

The CLAAS CRUISE PILOT automatically controls the harvesting speed for the best results on the basis of the engine load. Depending on the travel mode, the system uses various machine parameters simultaneously for control: ground speed, crop volume in the feeder housing and grain losses.

The following travel modes are available, the parameters always being adjusted on the basis of the engine load:

  • Constant speed – specified target speed
  • Constant throughput – specified target throughput
  • Constant throughput with losses – specified target throughput and loss rate

The factor responsible for restricting the harvesting speed, e.g. engine load, losses or throughput, is indicated in CEBIS.

To enable superior control of the LEXION’s power, you can set a maximum speed and five control response levels with quick, easy operation via the HOTKEY.

How you benefit:

The predictive CRUISE PILOT system responds before peak system loads occur. This keeps your LEXION running automatically at the upper limit of productivity at all times and gives better harvest results.

LEXION 770-750

CLAAS 4D-cleaning system.

Using the machine to harvest fields which are not level presents the cleaning system with a particular challenge. With the machine running along a side slope, the material in the residual grain separation system moves to the side of the returns pan closest to the bottom of the slope. As a result, the preparation floor and the sieves are loaded on one side only. And when the machine is running up or downhill, the fan speed and the sieve position have be adjusted in order to attain the optimum cleaning performance and avoid losses.

The 4D-cleaning system is another module within CEMOS AUTOMATIC. It comprises the 4D function to control the rotor flaps and AUTO SLOPE to adjust the fan speed.

LEXION 4D-cleaning system / 2016 / en

The scope of the 4D-cleaning system includes a third pair of rotor flaps under the third separator concave. Furthermore, the individual rotor flap segments are divided so that the left or right half can be opened and closed separately.

How it works:

In order to ensure even loading of the cleaning system, 4D controls the rotor flaps on the basis of the transverse and longitudinal tilt as well as the current load on the cleaning system. In this way, the cleaning performance remains almost constant, even in difficult terrain. 4D adjusts the position of the rotor flaps automatically, acting in the background as an aid to the operator.

4D. How you benefit:

  • Uniform distribution of material from residual grain separation process
  • Although machine is operating on an incline, there is even loading of the returns pan, preparation floor, upper sieve / lower sieve
  • The fan speed is adjusted automatically
  • Improved sieve pan performance through adjustment of air volume
  • Cleaning performance remains stable when operating on transverse and longitudinal slopes (in undulating terrain)
  • More throughput and reduced losses on slopes
LEXION 770-750

A full overview with just a click of the mouse.

The CLAAS TELEMATICS feature enables you to access all the important data for your combine anytime, anywhere via the internet. Enjoy the benefits of TELEMATICS.

Improve work processes.

A report with the operating time analysis and other important evaluations of the machine is sent to you by e-mail each day. This enables you to review the specific data from the previous day and determine when and how efficiently the combine operated before you start work again. In addition, the working tracks of the machine can be viewed together with the event log in order to optimise the transport logistics. TELEMATICS enables planned fleet management and helps avoid unprofitable idle time.

Link to demo.

You can see how all this works on a demonstration machine: www.claas-telematics.com

LEXION 770-750

Yield mapping.

Building on the foundation of the job management functions, you can use your LEXION to perform yield mapping. Sensors in the LEXION measure the yield and grain moisture while CEBIS adds geographic coordinates using GPS satellite data.

All measurements are stored on portable chip cards to facilitate transfer. AGROCOM MAP START software is included to enable you to produce informative yield maps to use as a basis for your future production strategy.

Choose from three automatic guidance systems.

All the LEXION models can be equipped with three automatic guidance systems which can be selected as needed according to application:

  • GPS PILOT – the satellite-supported guidance system

    The GPS PILOT can be used not only with hydraulically actuated steering, but also with the GPS PILOT FLEX automatic steering wheel. This steering wheel allows you to operate the machine with a high degree of accuracy. The great advantage of the GPS PILOT FLEX is its versatility.

    • No need to touch the hydraulics
    • Guidance system can quickly be moved between different machines

    The electric steering wheel transfers steering commands from the terminal and navigation controller to the steering axle in order to steer the machine.

  • LASER PILOT – the electro-optical guidance system
    LEXION 770-750

    The electro-optical sensors of the LASER PILOT use pulses of light to scan between the crop and stubble and guide the LEXION automatically along the edge.

    The LASER PILOT can be folded away for transport and is available for both the left and right side of the cutterbar. Its optimal positioning on the cutterbar side close to the crop edge enables a good viewing angle and ensures high functional reliability even with laid crops and slopes.

  • AUTO PILOT – the electro-mechanical guidance system
    LEXION 770-750

    Two digital sensors, incorporated in one of the picker units, record the position of the LEXION and automatically guide it on the best path through the rows of maize in all field conditions. In this way, AUTO PILOT contributes to greater performance and efficiency.

Support on the headlands.

TURN IN makes it easier for the machine to line up correctly. As the combine approaches the intended track, the automatic guidance takes over from an angle of 90° (where the direction of travel of the machine is the only reference parameter) or even 120° (where there is a field boundary). TURN IN allows the operator to concentrate on the attachment and the machine without also having to attend to lining up correctly. TURN IN is standard with both guidance system terminals (S10 / S7 terminal).

Automatic guidance at the headland too.

The AUTO TURN function takes care of turning manoeuvres at the headland. The direction of the turn and the next track to be worked are pre-selected on the terminal. The guidance system does the rest.

LEXION 770-750

The way you want it.

Portable displays from CLAAS offer a flexible control option for ISOBUS and guidance systems. The terminal can also be moved from one tractor or self-propelled harvester to another, depending on the season or job in hand. Fit your LEXION with the equipment you need, straight from the factory or as a retrofit option:

  • S10: high-resolution 10.4" touchscreen terminal with guidance and ISOBUS functions: up to four cameras can be viewed
  • S7: high-resolution 7" touchscreen terminal with guidance functions