An industrial truck including: - a frame , - a lifting assembly including a movable lifting element for lifting a load , - at least an electrical motor for the traction of wheels of the industrial truck, and - an axle structure connected to the frame of the truck by means of flanges and constituted by a left portion , a right portion and a housing of the electrical motor, the housing being interposed between the left portion and the right portion , the housing being joined to each of the left portion and the right portion , wherein each of the left portion and the right portion comprises supporting means for supporting the lifting assembly , and the housing of the electrical motor is configured to withstand a bending stress induced in the housing by the weight of the lifting assembly, characterised in that the housing of the electrical motor is thermally coupled with a stator of the electrical motor and includes at least one cooling duct (41-43) in which a cooling liquid flows to cool the electrical motor during the operation of the industrial truck, wherein the housing includes an outer surface on which a power electronic module for controlling the electric motor is mounted, and wherein, in a region of the housing between the outer surface and a recess of the housing configured to accommodate the electric motor , the housing includes an electric motor cooling duct positioned close to the recess and at least one power electronic module cooling duct positioned between the electric motor cooling duct and the outer surface for cooling the power electronic module during the operation of the industrial truck. - a frame , - a lifting assembly including a movable lifting element for lifting a load , - at least an electrical motor for the traction of wheels of the industrial truck, and - an axle structure connected to the frame of the truck by means of flanges and constituted by a left portion , a right portion and a housing of the electrical motor, the housing being interposed between the left portion and the right portion , the housing being joined to each of the left portion and the right portion , wherein each of the left portion and the right portion comprises supporting means for supporting the lifting assembly , and the housing of the electrical motor is configured to withstand a bending stress induced in the housing by the weight of the lifting assembly, the housing of the electrical motor is thermally coupled with a stator of the electrical motor and includes at least one cooling duct (41-43) in which a cooling liquid flows to cool the electrical motor during the operation of the industrial truck, wherein the housing includes an outer surface on which a power electronic module for controlling the electric motor is mounted, and wherein, in a region of the housing between the outer surface and a recess of the housing configured to accommodate the electric motor , the housing includes an electric motor cooling duct positioned close to the recess and at least one power electronic module cooling duct positioned between the electric motor cooling duct and the outer surface for cooling the power electronic module during the operation of the industrial truck. <EOS>