Harvesters are normally available for cutting trees up to 900mm diameter

The Harvester is a type of heavy Machinery that is employed in cut to length logging operations for felling, buckling, and cutting up trees. For steep hills or removing individual trees, chain saws are normally preferred. Normally, harvesters are built on a robust all terrain vehicle, which can either be wheeled or tracked. There are even some commercial harvesters that are adaptations of excavators with a new harvester head, while the others are purpose built vehicles. The normal harvester head may consist of: A chain saw to cut the tree at the base and also to cut it to length. Two feed rollers to reach out and grasp the tree. The wheels will pivot apart to allow the tree to be embraced by the head of the harvester, and pivot together to hug the tree tight.Two more curved knives for de-limbing. Harvesters are normally available for cutting trees up to 900 mm in diameter, built on vehicles that weight up to 20 t, with a boom that reaches up to a 10m radius.