New Evion completes restructuring of Claas combine range
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,” says 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 who 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.”
Technology
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,” Jan-Hendrik notes.
Straightforward threshing
The Evion is equipped with a single-drum tangential threshing unit with a large, 600mm threshing drum and a synchronised impeller combined with five 4.4m-long straw walkers and a feeder housing width of 1,420mm. This results in an impressive threshing concave area of 0.95m2 and a separation area of 6.25m2 provided by the straw walkers. Complemented by the standard pre-concave flaps under the threshing drum, this arrangement enables high throughput while also delivering excellent grain quality, Claas claims.
The threshing drum speed in the Evion Classic is infinitely adjustable over a range of 480-1,150rpm (420-1,080rpm 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
Despite the compact exterior dimensions, the development team were able to integrate an extremely efficient cleaning system, says Claas. The sieve pan works with the upper and lower sieves moving in opposite directions and has a total sieve area of 4.8m2. 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 per cent when harvesting on slopes.
Large grain tanks and powerful elevators
The grain tank integrated behind the cab holds 5,600L in the Evion 410 and 6,500L in the Evion 430. Sensors alert the operator when the fill level reaches 70 per cent and then 100 per cent. 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 330mm diameter of the grain tank unloading auger and the resulting 90-litre-per-second unloading rate – meaning that offloading can be completed in 1-1.5 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.
Powerful Cummins six-cylinder engine
Common to both Evion models is the 6.7L 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 1,900rpm, while the idle speed is a low 800rpm (1,200rpm 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 per cent. When the grain tank unloading system is active, the highest output level is enabled automatically.
Other highlights
- High-performance grain elevator operating at 34L/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 per cent;
- Three-speed hydrostatic drive;
- Soil protection with tyre diameters up to 1.85m at front and a maximum of 1.5m 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.