Corncracker expertise at CLAAS.


The MCC MAX rollers have been developed to process maize silage with chop lengths between 7 and 22 mm. They consist of 30 annular segments with a sawtooth profile. The arrangement and special geometry of the annular segments ensure that the crop is processed not only by crushing and friction, but also by cutting and shearing forces. This allows more intensive processing of the maize kernels and also produces a fibrous breakdown of the stalk fragments.

When compared with conventional corncrackers, the range of applications for the MCC MAX covers much greater chop lengths and types of dry matter, while still delivering very high-quality processing results. The MCC MAX provides contractors, machinery rings and farms with a new technical solution which allows them to meet the most diverse customer requirements for forage processing.


SHREDLAGE®, a technology which was developed in the US and for which CLAAS has now acquired the licence, is an intensive maize silage conditioning system in the extremely long chop length range of 26 to 30 mm. Operating with a speed differential of 50%, the SHREDLAGE® rollers have a sawtooth profile into which a counterdirectional spiral groove has also been cut. In this way, the MCC SHREDLAGE® is able to grind the maize kernels thoroughly and chop up the cob fragments completely.

Leaves are well shredded and the stalk material in particular is subjected to a lateral effect by the spiral groove which causes the bark to be rubbed off the stalk. At the same time, the soft inner core is split lengthways. The intensively "shredded" crop can be compressed very well as the structure of the processed material keeps any rebound effect to a minimum.

SHREDLAGE® maize silage.

The intensive processing multiplies the surface of the chopped material many times, resulting in significantly improved bacterial fermentation during ensiling and, above all, during digestion in the cow's rumen. Trials conducted by the University of Wisconsin show that SHREDLAGE® drastically increases the physical effectiveness of maize silage in the rumen while also improving the availability of the starch contained in all parts of the plant. As a result, the daily milk yield in the herds studied increased by up to 2 litres per cow. Furthermore, the rumen-friendly structure of the silage improved herd health.

A higher milk yield and improved livestock health are not the only benefits SHREDLAGE® has to offer dairy producers. As the availability of starch is optimised, it is possible to reduce the quantity of feed concentrate used while obtaining a higher overall milk yield. It is also possible to limit or even eliminate the use of fibre supplements such as straw, thereby providing further scope for cost savings.

The right approach to crop processing.

Only as intensive as necessary – this principle should always be kept in mind. It also applies to the roller gap setting and the intensity of the chopped material processing. More intensive crop processing increases the amount of energy required by the JAGUAR. The additional harvesting cost this causes needs to be taken into account.

Customer benefits:

  • Unique product range
  • Easy installation and removal thanks to outstanding accessibility
  • Extremely rugged design through large bearing units and sealed housing design
  • High throughput with optimum chop processing
  • Outstanding accessibility for maintenance or replacement of rollers
  • Consistent, maintenance-free hydraulic belt tensioning for maximum power transmission