Editorial team · Farm Machinery
InfoWeb Marketplace · Editorial team
Published on 13 August 2019 · 5 min read
LEXION 7000 and 8000, two high-performance CLAAS combine harvesters
InfoWeb Marketplace · Editorial teamPublished on 13 August 2019 · 5 min read
The new LEXION 7000 and 8000 feature a completely new threshing system called APS SYNFLOW HYBRID. They deliver up to 790 ch/581 kW, a power output that takes them to a new level. Their intuitive control architecture and new cab guarantee maximum comfort on board. DYNAMIC POWER regulates engine power according to harvesting conditions to maximize energy efficiency.
The APS SYNFLOW HYBRID threshing system builds on the winning formula of the tangential threshing system with accelerator combined with axial residual grain separation. The diameter of the ten-bar drum has been increased to 755 mm. Downstream of the drum, the threshing system uses a new, larger beater with a diameter of 600 mm. The drum width is 1 420 mm on models of the 7000 series and 1 700 mm on the 8000 models. The increased drum diameter reduces the concave wrap angle to 132°. As the speeds of the threshing elements are synchronized, the result is a straight flow with gentle crop handling and lower power consumption.
In difficult threshing conditions, the driver can choose to intensify threshing with a simple click from the CEBIS. This intensive threshing segment increases the friction between the drum and the concave. A hydraulic overload protection also prevents any blockage. Like all the other functions of the threshing system, control of the intensive threshing segment is integrated into CEMOS AUTOMATIC. To increase the versatility of the LEXION and to keep pace with ever more varied crop rotations, the concave segment can be changed from the left side of the machine. Calibrated for drum speeds between 160 and 920 tr/min, the APS SYNFLOW HYBRID threshing system is suitable for all types of crop, with the highest flow speed on the market.
Depending on the machine model, JET STREAM relies on six or eight turbines with an increased sieve area. A first double ventilated step provides intensive pre-cleaning. The airflow channel also provides a vertical airflow to remove as much chaff as possible from the very first step. Combined with the 4D slope compensation, the system can actively compensate for slopes of up to 20 %.
The new QUANTIMETER is now located at the outlet point of the grain elevator and allows yield to be assessed independently of the PS. Carried out from the cab, its calibration is only required once a year and per crop type.
With a grain tank capacity of 10 000 to 18 000 litres, the new LEXION 7000 and 8000 are ready for any yield. The grain tank is now easily and safely accessible from the rear thanks to a ladder. For crops prone to bridging, such as ryegrass seed, an unloading aid is available as a factory option for safe transfer of the crop to the tank floor augers, even in difficult conditions.
Unloading rates from 110 l/s to 130 l/s allow the crop to be unloaded quickly. An additional version with a rate of 180 l/s is also available. To ensure high precision during unloading, particularly when the trailer is almost full, the rate can be halved (90 l/s). The drive systems are engaged smoothly via a hydraulically controlled dry clutch. On the new LEXION, the spout swings forward at an angle of 105°. The driver can thus monitor the unloading process with perfect visibility.
The cab of the new LEXION offers the driver a more spacious and better soundproofed workstation than its predecessor. The perfectly structured control architecture, with a CEBIS terminal, makes it possible to operate the machine intuitively and makes it much easier for customers who were not familiar with CLAAS combine harvesters to get started. Note that the main functions are accessible from the armrest. The armrest and the CEBIS terminal can be configured according to the driver's needs, independently of each other. The terminal can also be moved completely to the right, out of the field of view, so that the driver has full visibility of the cutterbar. The new steering column allows the steering wheel to be adjusted perfectly to the driver's preferences.
The operator has three options for changing the machine settings: a touch-screen CEBIS function, the ever-present CEBIS control dial, or direct-access keys located on the side of the armrest. Thanks to the new C-MOTION multifunction lever, the driver has all the main header and unloading control functions within reach. The driver can also navigate through different CEBIS screens without taking a hand off the lever. 3 new keys on the C-MOTION make it possible to save up to 7 favourites among the cutting functions or the threshing components.
The driver's domain has expanded. The driver can adjust the drum speed reduction, the chopper, the switch to windrow mode, and the chopping fineness, all managed from the cab.
On the new LEXION too, CEMOS AUTOMATIC takes care of automatic management of the machine settings to optimize throughput and obtain impeccably clean grain. Some new LEXION functions, such as the stripper plates under the concave or the threshing segment, are also controlled by CEMOS AUTO THRESHING.
Integrated into the new electronic architecture, the FIELD SCANNER provides laser guidance of the machine along the left or right edge of the crop or along the tramlines. The system is housed in the cab roof and automatically adapts to the CLAAS header thanks to a recognition system. The FIELD SCANNER sensor, essential for LASER PILOT, is borrowed from luxury cars, in which it helps guide the vehicle between lanes and adapt its speed to its surroundings. It requires no GPS signal.
The new LEXION 7000 and 8000 are powered by MAN and Mercedes-Benz engines. Integrated into the CLAAS POWER SYSTEMS architecture, they deliver between 408 ch/300 kW on the LEXION 7400 and 790 ch/581 kW on the LEXION 8900. The LEXION 8900 thus has 164 ch/120 kW more than the LEXION 780. The machines use a particulate filter combined with SCR technology to meet the limits of the Stage V emissions standard.
The DYNAMIC POWER system is now also available on LEXION models. It adapts the engine power curve to harvesting conditions. If harvesting conditions require little power, the engine power curve is shifted downwards. Conversely, if more power is needed, for example to unload the grain tank, the system shifts the curve upwards to increase the available power.
The new LEXION drive system maximizes the reliability of the machine. The number of belts has been reduced, while all variable-speed drives have been reinforced. These can also be connected to the central lubrication system. Fitted as standard on all new LEXION models, the DYNAMIC COOLING system delivers cooling power proportional to requirements and makes the LEXION an even smarter machine.
Finally, thanks to the REMOTE SERVICE system, the driver benefits from optimal and immediate support for maximum machine availability.
APS SYNFLOW HYBRID threshing system: the new heart
The APS SYNFLOW HYBRID threshing system builds on the winning formula of the tangential threshing system with accelerator combined with axial residual grain separation. The diameter of the ten-bar drum has been increased to 755 mm. Downstream of the drum, the threshing system uses a new, larger beater with a diameter of 600 mm. The drum width is 1 420 mm on models of the 7000 series and 1 700 mm on the 8000 models. The increased drum diameter reduces the concave wrap angle to 132°. As the speeds of the threshing elements are synchronized, the result is a straight flow with gentle crop handling and lower power consumption.
In difficult threshing conditions, the driver can choose to intensify threshing with a simple click from the CEBIS. This intensive threshing segment increases the friction between the drum and the concave. A hydraulic overload protection also prevents any blockage. Like all the other functions of the threshing system, control of the intensive threshing segment is integrated into CEMOS AUTOMATIC. To increase the versatility of the LEXION and to keep pace with ever more varied crop rotations, the concave segment can be changed from the left side of the machine. Calibrated for drum speeds between 160 and 920 tr/min, the APS SYNFLOW HYBRID threshing system is suitable for all types of crop, with the highest flow speed on the market.
JET STREAM cleaning and new QUANTIMETER
Depending on the machine model, JET STREAM relies on six or eight turbines with an increased sieve area. A first double ventilated step provides intensive pre-cleaning. The airflow channel also provides a vertical airflow to remove as much chaff as possible from the very first step. Combined with the 4D slope compensation, the system can actively compensate for slopes of up to 20 %.
The new QUANTIMETER is now located at the outlet point of the grain elevator and allows yield to be assessed independently of the PS. Carried out from the cab, its calibration is only required once a year and per crop type.
Large-capacity grain tank and unloading auger
With a grain tank capacity of 10 000 to 18 000 litres, the new LEXION 7000 and 8000 are ready for any yield. The grain tank is now easily and safely accessible from the rear thanks to a ladder. For crops prone to bridging, such as ryegrass seed, an unloading aid is available as a factory option for safe transfer of the crop to the tank floor augers, even in difficult conditions.
Unloading rates from 110 l/s to 130 l/s allow the crop to be unloaded quickly. An additional version with a rate of 180 l/s is also available. To ensure high precision during unloading, particularly when the trailer is almost full, the rate can be halved (90 l/s). The drive systems are engaged smoothly via a hydraulically controlled dry clutch. On the new LEXION, the spout swings forward at an angle of 105°. The driver can thus monitor the unloading process with perfect visibility.
Intuitive combine control and added comfort
The cab of the new LEXION offers the driver a more spacious and better soundproofed workstation than its predecessor. The perfectly structured control architecture, with a CEBIS terminal, makes it possible to operate the machine intuitively and makes it much easier for customers who were not familiar with CLAAS combine harvesters to get started. Note that the main functions are accessible from the armrest. The armrest and the CEBIS terminal can be configured according to the driver's needs, independently of each other. The terminal can also be moved completely to the right, out of the field of view, so that the driver has full visibility of the cutterbar. The new steering column allows the steering wheel to be adjusted perfectly to the driver's preferences.
The operator has three options for changing the machine settings: a touch-screen CEBIS function, the ever-present CEBIS control dial, or direct-access keys located on the side of the armrest. Thanks to the new C-MOTION multifunction lever, the driver has all the main header and unloading control functions within reach. The driver can also navigate through different CEBIS screens without taking a hand off the lever. 3 new keys on the C-MOTION make it possible to save up to 7 favourites among the cutting functions or the threshing components.
The driver's domain has expanded. The driver can adjust the drum speed reduction, the chopper, the switch to windrow mode, and the chopping fineness, all managed from the cab.
Cutting-edge technology for precision grain harvesting
On the new LEXION too, CEMOS AUTOMATIC takes care of automatic management of the machine settings to optimize throughput and obtain impeccably clean grain. Some new LEXION functions, such as the stripper plates under the concave or the threshing segment, are also controlled by CEMOS AUTO THRESHING.
Integrated into the new electronic architecture, the FIELD SCANNER provides laser guidance of the machine along the left or right edge of the crop or along the tramlines. The system is housed in the cab roof and automatically adapts to the CLAAS header thanks to a recognition system. The FIELD SCANNER sensor, essential for LASER PILOT, is borrowed from luxury cars, in which it helps guide the vehicle between lanes and adapt its speed to its surroundings. It requires no GPS signal.
Engines now combined with DYNAMIC POWER
The new LEXION 7000 and 8000 are powered by MAN and Mercedes-Benz engines. Integrated into the CLAAS POWER SYSTEMS architecture, they deliver between 408 ch/300 kW on the LEXION 7400 and 790 ch/581 kW on the LEXION 8900. The LEXION 8900 thus has 164 ch/120 kW more than the LEXION 780. The machines use a particulate filter combined with SCR technology to meet the limits of the Stage V emissions standard.
The DYNAMIC POWER system is now also available on LEXION models. It adapts the engine power curve to harvesting conditions. If harvesting conditions require little power, the engine power curve is shifted downwards. Conversely, if more power is needed, for example to unload the grain tank, the system shifts the curve upwards to increase the available power.
The new LEXION drive system maximizes the reliability of the machine. The number of belts has been reduced, while all variable-speed drives have been reinforced. These can also be connected to the central lubrication system. Fitted as standard on all new LEXION models, the DYNAMIC COOLING system delivers cooling power proportional to requirements and makes the LEXION an even smarter machine.
Finally, thanks to the REMOTE SERVICE system, the driver benefits from optimal and immediate support for maximum machine availability.
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