These chippers are designed with a conical-shaped feeding opening, a feature that, combined with the upper roller that opens completely, allows even very bulky logs and branches to be processed effectively, thus increasing productivity.
The closed feeding chain brings the material to be chipped to the counter-knife, a design feature that eliminates the problem of ‘wasted material’ accumulating under the machine after each movement, thus avoiding the need to slow down the equipment for site cleaning. The recovery augers, positioned under the final part of the feeding chain, collect any excess of chipped material and convey it for expulsion through the exhaust fan.
The cutting system used by Pezzolato consists of a closed drum with staggered sections equipped with knives, a counter-knife, and an interchangeable calibration grid. This system guarantees the production of quality wood chips, as the closed drum allows the cutting length of the wood chips to be kept fixed and constant. The wood, subjected to the action of the knife, is transformed into calibrated chips, which are able to pass through the calibration grid immediately after cutting.
Worth mentioning is the system with the collapsible counter-knife: this system minimizes any damage caused by the accidental introduction of foreign bodies (not biomass) into the chipper.