The invention relates to a forest machine (10), which includes - a chassis (12) of at least two parts, comprising a first chassis (14) and a second chassis (16) pivoted consecutively by a central pivot (36), - sets of wheels (18) arranged in connection with both the first chassis (14) and the second chassis (16), - an engine (22) for creating drive power, - power transmission (24) for transmitting power, comprising a power transmission (24.1) of the first chassis (14) and a power transmission (24.2) of the second chassis (16), and - a load space (26) for transporting a load, supported on the second chassis (16), in which the said second chassis (16) includes two longitudinal parts (48) attached to each other at least in front of the load space (26), and the load space (26) extends between the longitudinal parts (48) in the vertical direction of the forest machine (10). The power transmission (24.2) of the second chassis (16) is arranged in the second chassis (16) in front of the load space (26) in the direction of travel of the forest machine (10), between the central pivot (36) and the load space (26), in order to distribute power to the drive wheel (25) of each set of wheels (18) of the second chassis (16) from in front of the load space (26), and each said drive wheel (25) in the second chassis (16) is installed in the second chassis (16) a fixed position relative to the longitudinal length of the second chassis ( 16 ).La présente invention concerne une machine forestière (10), qui comporte : - un châssis (12) d'au moins deux parties, comprenant un premier châssis (14) et un second châssis (16) qui pivotent consécutivement par un pivot central (36), - des jeux de roues (18) disposés en relation avec le premier châssis (14) et le second châssis (16), - un moteur (22) destiné à créer une puissance d'entraînement, - une transmission d'énergie (24) destinée à transmettre de l'énergie, comprenant une transmission d'énergie (24.1) du premier châssis (14) et une transmi
