The Pezzolato’s chipper can be supplied with a collapsible counter-blade (standard for PTH 820-1000,  on request for PTH 700-900)

The collapsible counter-blade is mounted on a running slide and secured with adjusted shear bolts. Whenever a hard body is accidentally entered into the chipper, the bolts are sheared and the counter-blade falls down, so that the foreign body exits before causing damages.



Standard counter-blade:

Collapsible counter-blade:




Example of a steel hinge introduced and ejected from a Pezzolato wood chipper with collapsible counter blade.