FENDT has expanded its Katana self-propelled forage harvester range with the new 850 model.

This is equipped with an in-line six-cylinder engine made by Liebherr, with a displacement of 18 litres and it has an output of 847 hp.

The engine complies with all European Stage V emissions standards, using selective catalytic reduction (SCR) without a diesel particulate filter or exhaust gas recirculation to achieve that. This protects the engine, reduces the required cooling power and fuel consumption while meeting all standards.

If the full power of the forage harvester isn't required, it can be operated in fuel-saving Eco Mode, when the usual running speed of the chopping cylinder is maintained at reduced engine speed. The design of the engine makes it possible to work fuel-efficiently, in both full-load and partial-load operation.

As an option, the Fendt Katana 850 – like the Katana 650 – can also have a reversible fan with variable fan blade pitch technology to keep the engine running cleanly and efficiently.

The pitch of the individual fan blades can be adjusted as required which means that the exact cooling capacity is always achieved. If the full cooling capacity is not required, the power saved at the fan is fed into the rest of the machine.

Optimal performance

When developing the machine's crop flow characteristics, the focus was on a uniform feed flow at high throughputs and at the same time with minimal power requirements.

In addition, the Kemper 490, plus a header with a 12-row maize working width is available for the Fendt Katana. This header is suspended on the pendulum frame of the Fendt Katana 850 and allows for variations of up to 14°.

Its six pre-compression rollers on the feed intake ensure optimum pre-compression of the forage to ensure excellent chop quality and length consistency. Metal and stone detectors on the first pre-compression rollers prevent damage to the chopping cylinder.

In the rear area of the feed intake, the crop volume is recorded via a sensor to help with record-keeping.

With a diameter of 720mm, the Fendt Katana 850 has the largest chopping cylinder on the market, said the company. Optional chopping cylinders with 20, 28 or 40 knives are available for the forage harvester which cover chop lengths of between 2.6 and 41.4 mm.

Various cutting lengths

There's a choice of different roller crackers with a diameter of 300mm.

The standard R cracker, with sawtooth profile, is suitable for chop lengths of up to 20mm; the optional RS cracker with V-spiral groove has been developed for optimal processing with longer chop lengths.

The speed difference of 30, or optionally 40% ensures thorough processing of the crop for a better feed out when ensiled. This ensures that all the nutrients can be extracted from the crop when it is used.

The revised discharge chute can be precisely controlled and centred, with the crop accurately blown into the trailer and losses during chopping are avoided. The loading height of up to 6.2m ensures targeted transfer of the crop, even with large trailers.

The Fendt Fill Control assistant is available as an option for the Katana 850. If the discharge chute swivels, the discharge flap is automatically controlled so that trailers are filled more evenly.