CLAAS is expanding its combine harvester product range beneath the TRION and LEXION series with two new five-walker machines. Outfitted with modern Cummins six-cylinder engines and the CEMIS 700 control concept, these compact machines elevate performance, convenience, flexibility, and durability to a new level in this category. The EVION CLASSIC is an ideal choice for family farms, contractors, and agribusinesses with smaller field sizes.

The introduction of the EVION marks the conclusion of the restructuring of the entire CLAAS combine harvester range initiated with the new LEXION in 2019. As successors to the AVERO and smaller TUCANO models, these three five-walker combine harvesters complement the lower end of the range below the TRION.

Jan-Hendrik Mohr, CLAAS CEO and head of the Grain Business Unit emphasises the significance of the EVION: "The EVION is a pivotal product for CLAAS. With these new combine harvesters, we can offer modern yet affordable machines for smaller-scale farms in need of their own grain harvesting equipment. Being a family-owned business ourselves, we aim to continue providing the right machinery for smaller farms across all our product segments. We have chosen the theme 'family matters' for the EVION campaign, highlighting three key messages: celebrating the completion of the CLAAS combine harvester family with the new EVION, acknowledging family farms as our primary customer group, and recognising our position as the world's largest family-owned agricultural machinery company."

The technology of the EVION is built upon a modular system used in nearly 40 versions of the LEXION and TRION.

The EVION features a single-drum tangential threshing unit with a sizable 600 mm threshing drum, synchronised impeller, five 4.40-metre-long straw walkers, and a feeder housing width of 1,420 mm. This configuration 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 standard preconcave flaps under the threshing drum, this setup enables high throughput while delivering excellent grain quality.

The threshing drum speed in the EVION classic is infinitely adjustable within a range of 480 to 1,150 rpm (420 – 1,080 rpm with a reduction kit) using the CEMIS 700 terminal. Hydraulic concave clearance adjustment can be controlled from the cab and includes integrated overload protection provided by a diaphragm accumulator to prevent blockages in the threshing unit. Since the threshing concave in the EVION CLASSIC is a Mutlicrop unit, conversion measures are rarely needed when switching between common threshing crops. When conversion is required, concave segments can be easily swapped through the stone trap.

To enhance secondary separation and throughput, the centre risers of the straw walkers have been redesigned for more effective crop mat loosening and faster transfer to the next straw walker racks. Sensor-based monitoring of the crop flow on the straw walkers ensures early warnings through audible alarms and visual alerts on the CEMIS 700 terminal display when blockages occur due to challenging harvesting conditions. Additionally, the optional CEMOS auto-crop flow automatically deactivates the front attachment and the feeder unit when the threshing drum faces potential blockages or significant belt slippage, preventing unnecessary downtime.

High-Performance Cleaning with Convenient Adjustment

Despite the compact exterior dimensions of the EVION, the development team has integrated an exceptionally efficient cleaning system. The sieve pan employs upper and lower sieves moving in opposing directions, featuring optimised flow characteristics through frogmouth openings, a design previously successful in the LEXION and TRION under diverse operating conditions.

The standard equipment for all EVION models includes electric sieve adjustment and a loss measurement system. Radial fan speed adjustment, controlled from the cab, can be automated using the optional auto slope functionality during uphill or downhill harvesting. An inspection window allows easy viewing of returns from the operator's seat. The 3D cleaning system, available as an option, can compensate for lateral tilts of up to 20 percent when harvesting on slopes.

The integrated grain tank behind the cab has a capacity of 5,600 l in the EVION 410 and 6,500 l in the EVION 430. Operators receive alerts when the fill level reaches 70 percent and then 100 percent. Additionally, a large grain tank inspection window provides a comprehensive view of the fill level and grain quality. Unloading is swift, with all three EVION models benefiting from a 330 mm diameter grain tank unloading auger, resulting in a 90-litre-per-second unloading rate, completing the process in 1 to 1.5 minutes. The 105-degree pivot angle of the grain tank unloading auger offers an optimal view of the offloading process. An optional pivoting unloading spout, as used in the TRION and LEXION, provides precise control of the grain stream directed at the transport vehicle.

Another compelling feature of the EVION models is the grain elevator, boasting an increased conveying capacity of 34 l/s.

Farmers, especially in medium to high-yield locations, place great emphasis on efficient straw chopping and spreading. The EVION offers an optional 72-knife straw chopper, a first for this class, alongside the standard 52-knife version. Adjustments to both the shear bar and friction bar require no tools, and the switch from chopping to swathing occurs on the right-hand side of the straw discharge hood. Straw guide plates are manually adjusted to the working width, ensuring uniform distribution, even with a cutter bar width of 6.80 m. Optional hydraulically driven chaff spreaders distribute chaff and short straw across the working width.

Both EVION models share the 6.7-litre Cummins B6.7 engine meeting the Stage V emission standard. This common-rail six-cylinder unit, also used in the TRION, excels at delivering high torque at low revs. The full rated output of 204 hp (EVION 410) and 231 hp (EVION 430) is available at just 1,900 rpm, with idle speed at a low 800 rpm (1,200 rpm with active hydraulic functions). The engine management system ensures power delivery matches actual requirements, potentially reducing fuel consumption by up to 10 percent.

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 that 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 electro hydraulically. 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.