Two new five-walker combine harvesters in the EVION model series round out the lower end of the CLAAS combine harvester range.

EVION CLASSIC: The latest threshing technology combined with proven components

The arrival of the EVION completes the restructuring of the entire CLAAS combine harvester range which began with the new LEXION in 2019. As successors to the AVERO and the smaller TUCANO models, these three five-walker combine harvesters round out the lower end of the range below the TRION. “The EVION is a very important product for CLAAS”, explains CLAAS CEO Jan-Hendrik Mohr who is also responsible for the Grain Business Unit. “With these  new combine harvesters we are able to offer modern, yet affordable machines for smaller-scale farms which want their own grain harvesting equipment. We’re a family business ourselves and we want to continue to offer the right machines for smaller farms across all our product segments. We chose “family matters” as the theme of the EVION campaign with three messages in mind: first, to mark the completion of the CLAAS combine harvester family with the new EVION, second, to recognise family farms as the principal customer group, and third, to acknowledge our position as the world’s largest family-owned agricultural machinery company.”

The technology of the EVION is based on a modular system which is used to build almost 40 versions of the LEXION and TRION. “For the EVION, we are drawing on tried and trusted technology which has proven itself in thousands of machines”, Mohr continues.

EVION CLASSIC: efficient threshing technology meets excellent straw quality and the latest in operator convenience.

Straightforward threshing with a large drum and maximum operating reliability

As well as focusing on using high-quality, proven components, delivering uncompromising threshing quality and ensuring operating reliability, even under difficult harvesting conditions, the development team have ensured that the EVION is easy to use. It is therefore equipped with a single-drum tangential threshing unit with a large, 600 mm threshing drum and a synchronised impeller combined with five 4.40-metre-long straw walkers and a feeder housing width of 1,420 mm. This results in an impressive threshing concave area of 0.95 m² and a separation area of 6.25 m² provided by the straw walkers. Complemented by the standard preconcave flaps under the threshing drum, this arrangement enables high throughput while also delivering excellent grain quality.

The threshing drum speed in the EVION CLASSIC is infinitely adjustable over a range of 480 to 1,150 rpm (420 – 1,080  rpm with reduction kit) using the CEMIS 700 terminal. Concave clearance adjustment is performed hydraulically from the cab and features integrated overload protection provided by a diaphragm accumulator to prevent blockages from occurring in the threshing unit. As the threshing concave in the EVION CLASSIC is a MULTICROP unit, conversion measures are only needed rarely, if ever, when switching between common threshing crops. When conversion is required, the concave segments can be swapped out easily through the stone trap.

In order to provide more effective secondary separation and greater throughput, the centre risers of the straw walkers have been redesigned to loosen the crop mat even more effectively and to enable a faster transfer to the next straw walker racks. Another important factor – in addition to the threshing concave overload protection – in ensuring operating reliability is the sensor-based monitoring of the crop flow on the straw walkers. As soon as any blockages begin to develop there as a result of difficult harvesting conditions, the operator receives early warning both in the form of an audible alarm and as a visual alert on the CEMIS 700 terminal display. In addition, the optional CEMOS AUTO CROP FLOW automatically deactivates the front attachment and the feeder unit in the event of any imminent risk of blockages on the threshing drum or serious belt slippage so that no more crop is fed in. This avoids unnecessary downtime.

High-performance cleaning with convenient adjustment

Despite the compact exterior dimensions of the EVION, the development team were able to integrate an extremely efficient cleaning system. The sieve pan works with the upper and lower sieves moving in opposite directions and has a total sieve area of 4.80 m². The sieve design, which features frogmouth openings with optimised flow characteristics, has already proven itself over and over again in the LEXION and TRION under extremely varied operating conditions.

In addition to electric sieve adjustment, the standard equipment for all EVION models includes a loss measurement system. Adjustment of the speed of the radial fan is performed from the cab – and can even be controlled automatically with the optional AUTO SLOPE functionality when harvesting uphill or downhill. An inspection window allows the returns to be viewed conveniently from the operator’s seat. Available as an option is the 3D cleaning system, which is able to compensate for a lateral tilt of up to 20 percent when harvesting on slopes.

Large grain tanks and powerful elevators

The grain tank integrated behind the cab holds 5,600 l in the EVION 410 and 6,500 l in the EVION 430. Sensors alert the operator when the fill level reaches 70 percent and then 100 percent. In addition to this functionality, a large grain tank inspection window gives the operator a direct, comprehensive view of the fill level and grain quality. When it comes to unloading, all three EVION models benefit from the 330 mm diameter of the grain tank unloading auger and the resulting 90-litre-per-second unloading rate – meaning that offloading can be completed in 1 to 1.5 minutes. The 105-degree pivot angle of the grain tank unloading auger ensures that the operator always has a perfect view of the offloading process. A pivoting unloading spout, as already used in the TRION and LEXION, is available as an option to provide high-precision control of the grain stream directed at the transport vehicle.

Another powerful argument in favour of the EVION models is to be found in the grain elevator which has an increased conveying capacity of 34 l/s.

Straw chopping and spreading with no compromises

At medium to high-yield locations in particular, farmers attach great importance to good straw chopping and spreading. This is why, in a first for this class, the EVION is available with an optional 72-knife straw chopper as an alternative to the standard 52-knife version. Both shear bar and friction bar can be adjusted without tools while the switchover from chopping to swathing is performed at the right-hand side of the straw discharge hood. The straw guide plates are adjusted manually to the working width so that uniform distribution is ensured even when operating with a cutterbar width of 6.80 m. Chaff and short straw are distributed across the working width by optional, hydraulically driven chaff spreaders.

Powerful Cummins six-cylinder engine with DYNAMIC POWER

Common to both EVION models is the 6.7-litre Cummins B6.7 engine which meets the Stage V emission standard. This is the same common-rail six-cylinder unit used in the TRION and is notable for its ability to deliver high torque at low revs. The full rated output of 204 (EVION 410) and 231hp (EVION 430) is available at just 1,900 rpm, while the idle speed is a low 800 rpm (1,200 rpm with active hydraulic functions). DYNAMIC POWER engine management ensures that the engine only delivers as much power as is actually required at any time. This system can reduce fuel consumption by up to 10 percent. When the grain tank unloading system is active, the highest output level is enabled automatically.

Access to the engine from the maintenance platform is excellent, simply requiring the cover plate which provides protection from dust and dirt deposits to be raised to the open position with the support of two gas struts. A rotating radiator screen cleans the air intake area continuously. For daily cleaning tasks, an air compressor with three connection points – near the cab (for cab cleaning), at the left above the rear axle (cleaning of sieve and straw walker area as well as the drives on the right-hand side) and near the engine (cleaning of engine area) – is available as an option.

Power transmission to the various driven units of the machine is handled by a drive system based partly on components from the TRION and LEXION. The reel drive, feeder housing and front attachment reversing mechanism as well as the threshing drum and fan variator are operated hydraulically – a unique approach in this class which enables outstanding operating reliability in difficult and changing conditions. Other important units, such as the threshing unit variator, straw chopper, front attachment and grain tank unloading auger are activated and deactivated electrohydraulically. Belt tensioners, which are fitted as standard, simplify the system check at the start of each working day.

The ground drive is provided by a 3-speed, manually shifted hydrostatic drive with a choice of top speeds – 20, 25 or 30 km/h. For the rear axle, customers have a choice of wheels with a diameter of 1.35 m or, for maximum soil protection, as much as 1.50 m.

For long working days: a spacious cab with CEMIS 700 and CMOTION

On entering the cab, which is reached via pivoting access steps, you are immediately struck by the spaciousness and the modern control armrest with the ergonomic CMOTION multifunction lever, the clearly laid-out keypad and the CEMIS 700 touchscreen terminal. The 7-inch CEMIS 700, which can be adjusted to the position that suits each operator best, has a high-contrast display that allows machine functions to be monitored easily, even in bright sunlight. The ability to call up saved settings for all common threshing crops allows the machine to be deployed quickly and enables easy, time-saving changeovers between grain types. The operator can override the saved settings at any time during harvesting and adjust them in accordance with the prevailing conditions. Further advantages of CEMIS 700 include its ability to store jobs and to record fuel consumption separately for road and field operation as well as in litres per hour and litres per hectare. As CEMIS 700 is a fully-fledged ISOBUS terminal, it can also be used for other tasks with tractors and implements outside the combine harvesting season.

Both EVION models are equipped as standard with automatic climate control and a camera while footrests on the steering column are available as an option – as is a 30-litre cool box under the instructor’s seat. Other optional items include an air-suspended comfort seat, electrically adjustable rear-view mirrors and a second camera.

The cab also provides numerous storage options as well as one USB port and two USB-C ports which can be used to charge smartphones, tablets and other devices.

Although the EVION models are already equipped as standard with a comprehensive LED lighting package, the list of options provides for a total of up to 17 LED work lights ex factory – and extends to interior lighting for the grain tank and maintenance lighting under the side panels.

Control and monitoring of all key functions with CEMIS 700, CMOTION and multifunction armrest, with CEMIS 1200 interface for automated steering using GPS.

Cutterbars up to 6.80 m working width with user-friendly multicoupler

With its CLAAS universal feeder housing and multicoupler, the EVION is able to accept cutterbars used with the TRION and LEXION up to 6.80m. The TREND equipment package includes CONTOUR ground contour adaptation as standard. This automatically adjusts the front attachment to ground undulations parallel to the direction of travel.

Powerful arguments – all the new features of the EVION at a glance:

• Two models with engine outputs of 204 to 231 hp
• CLASSIC version primarily for grain threshing
• TREND equipment package with a wide range of additional features
• Use of proven components from TRION and LEXION
• Single-drum threshing unit with large, 600 mm threshing drum and a feeder housing width of 1,420  mm
• MULTICROP threshing concave with 0.95 m² threshing concave area
• Five long straw walkers with centre risers optimised to support crop flow and a separation area of 6.25 m²
• Optional active crop flow monitoring with CEMOS AUTO CROP FLOW
• High-performance cleaning with 4.80 m² sieve area; loss measurement and electric adjustment of sieve as standard
• Grain tank capacity of up to 6,500l and fast offloading at 90 l/s
• High-performance grain elevator operating at 34 l/s
• Straw chopper with 52 or 72 knives; optionally with chaff spreader
• High-torque at low revs from Cummins six-cylinder engine
• DYNAMIC POWER engine management for fuel saving of up to 10 percent
• 3-speed hydrostatic drive
• Soil protection with tyre diameters up to 1.85 m at front and a maximum of 1.50 m at rear
• Spacious cab with automatic climate control, air-suspended seat and ergonomic control armrest including CEMIS 700 and CMOTION
• LED lighting package for perfect evening/night illumination of work area
• CEMIS 700 with job management and differentiated logging of fuel consumption
• Simplified maintenance enabled by three compressor connection points, LED maintenance lighting and excellent accessibility all round