A solution to forestry's woes
Forestry is never far from the news, not least because of the damage attributed to slash washing downstream during storms.
Aimed at bringing marginal, rock bound ground into production for cropping or grassland operations, the manufacturers claim the process is cheaper than rock picking, a process that usually causes more stones rise to the surface.
Crushing rocks or stones to a depth of 400mm means that rocks will not resurface for many years, if ever. NZ supplied machines have already seen service crushing schist in Central Otago and notoriously hard river stones in Te Anau.
The BPB and BPS ranges are capable of crushing material from 400mm down to 30mm in the case of the former, and 500mm down to 20mm in the case of the latter, both in a single pass.
Machines are said to be made for the task with robot welded frames using high grade steel and protected by Hardox plating in vulnerable areas.
The full-width rotor has replaceable tungsten-carbide hammers that act against a hydraulically adjusted anvil with hydro-pneumatic overload protection. Other key points include twin belt drives and sealed labyrinth style bearings.
Complementing the crushers is the Kirpy Ripper that uses solid legs to get to working depths of 500mm to pull rocks to the surface ahead of the crusher – extremely useful for opening up pugged or panned areas in all types of paddock.
