BiG Pack – The new generation

• Short chop lengths – minimum 21 mm nominal lengths
• Adjustable LOC, two selectable counterblades
• Defibration effect for added liquid absorption
• Mechanical gearbox and hydraulic height control

PreChop is an integral front-mounted chopping unit on the KRONE big balers of the new BiG Pack 1270 (VC), 1290 (VC) and 1290 HDP (VC) series. It has 96 rotating blades and two rows of 47 counterblades that cut the material to a nominal length of 21 mm. More than than, PreChop also defibrates the stalks visibly.

Chopped and nearly dust-free straw makes perfect bedding in poultry houses and cow cubicles as well as in pig and beef cattle housing. More than that, it is used as animal feed that adds fibre to low-fibre rations but also as mulch in strawberry plantations and nutrient medium in mushroom production. The treated straw has better absorption qualities, spreads more easily in the livestock house, and prevents the slurry drains from blocking up while supporting manure mineralization.

The large cutting rotor is 525 mm in diameter and features 96 pivoting blades in a helical arrangement. Rotating at 3,000 rpm, it feeds the material through two rows of counterblades with 47 rigid blades each and from here on to the BiG Pack pick-up. A turbulence generator strip between the counterblades ensures a top quality chop. The intensity of the two counterblades can be adjusted in one of five positions without tools. All blades are reversible for a long service life.

When used with PreChop, the feed roller on the Active Pick-up can be stopped and switched off if necessary. The crop press roller can also be moved away. The PreChop has a high lift-out height, enabling the baler to be used without removing the PreChop.