Abstract: A tractor (1) has a mudguard device (5) including a cover element (50) suitable to surround at least along an arc of circumference the respective wheel assembly (100) and suitable to act as a separation element along a transverse axis (Y-Y) between the respective wheel assembly (100) and an operating area (200) containing components of the tractor (1). A support system (51) is suitable to attach the cover element (50) to the respective axle (10). The cover element (50) can be guided in movement from a covering position in which the cover element covers the respective wheel assembly (100) to an open position in which the operating area (200) is accessible, and vice versa.

Abstract: The present invention relates to a support (1) for rolling bearings, which advantageously finds application, among others, in the technical field of rotary vacuum pumps, such as turbomolecular vacuum pumps. According to the invention, the support for rolling bearings (1) comprises a first inner annular shell (3) made of metal and intended to be mounted on the outer surface of a rolling bearing, a second outer annular shell (5) made of metal, concentric with said first inner annular shell and external thereto and intended to be mounted on the surface of the bearing seat, and an intermediate elastomeric member (7) provided between said inner and outer shells and fixed thereto.

Abstract: In a method for fabricating a heat exchanger, a metal body includes a bore and inlet and outlet connectors fitted to the body at respective inlet and outlet ends of the bore. The connectors each include an inner surface in which annular grooves are formed. A tube is inserted in the bore such that inlet and outlet ends of the tube are respectively located in the inlet and outlet connectors. A mandrel is operated to expand at least a portion of the tube into contact with the body, and to expand the inlet and outlet tube ends into contact with the grooves of the inlet and outlet connectors, respectively. The heat exchanger provides improved thermal exchange efficiency between the tube and the body, and fluid-tight connections between the tube and the inlet and outlet connectors.

Abstract: In a method for fabricating a heat exchanger, a metal body includes a bore and inlet and outlet connectors fitted to the body at respective inlet and outlet ends of the bore. The connectors each include an inner surface in which annular grooves are formed. A tube is inserted in the bore such that inlet and outlet ends of the tube are respectively located in the inlet and outlet connectors. A mandrel is operated to expand at least a portion of the tube into contact with the body, and to expand the inlet and outlet tube ends into contact with the grooves of the inlet and outlet connectors, respectively. The heat exchanger provides improved thermal exchange efficiency between the tube and the body, and fluid-tight connections between the tube and the inlet and outlet connectors.