An axlebox for a railway vehicle, having a housing provided with a through bore extending along a central axis, a bearing unit housed in the bore, and a back cover. The back cover and housing are fixed together by special manufactured shapes so as to minimize spare parts.

The disclosure relates to a generator system for rail vehicles, for example, a system including a generator with a rotor and a stator, and a journal box unit. The journal box unit may include a bearing for mounting an axle, and a bearing housing. An end cap is arranged on the front face of the axle. The end cap is connected to the axle for co-joint rotation therewith, and the stator is connected to the bearing housing. A friction wheel is arranged on the outer circumferential surface of the end cap, the friction wheel being designed as the rotor of the generator.

The disclosure relates to a generator system for rail vehicles, for example, a system including a generator with a rotor and a stator, and a journal box unit. The journal box unit may include a bearing for mounting an axle, and a bearing housing. An end cap is arranged on the front face of the axle. The end cap is connected to the axle for co-joint rotation therewith, and the stator is connected to the bearing housing. A friction wheel is arranged on the outer circumferential surface of the end cap, the friction wheel being designed as the rotor of the generator.

A wheel axle for a vehicle, having a shaft extending along a main axis, a first protection device and at least one second protection device, each device having a body at least partially surrounding the shaft in a plane perpendicular to the main axis, the body having a first end portion and a second end portion, the end portions being opposite one another along their main axis. The first end portion of the first device at least partially surrounds the second end portion of the second device in a plane perpendicular to the main axis.

A wheel axle for a vehicle, having a shaft extending along a main axis, a first protection device and at least one second protection device, each device having a body at least partially surrounding the shaft in a plane perpendicular to the main axis, the body having a first end portion and a second end portion, the end portions being opposite one another along their main axis. The first end portion of the first device at least partially surrounds the second end portion of the second device in a plane perpendicular to the main axis.

In an embodiment, the present invention provides a bearing for use in a rail vehicle, including: a core assembly; a casing assembly that surrounds said core assembly, the core assembly being supported against the casing assembly by at least one membrane and being movable relative to the casing assembly; and a functional chamber, which chamber contains a working fluid, the functional chamber being delimited by a pumping surface that is formed by the core assembly and the membrane. A projection surface of the pumping surface that is orthogonal to an axial direction covers between 60% and 99% of a cross-sectional area, orthogonal to the axial direction, of the interior of the casing assembly, in which the membrane and the core assembly are received at least in part.

In an embodiment, the present invention provides a bearing for use in a rail vehicle, including: a core assembly; a casing assembly that surrounds said core assembly, the core assembly being supported against the casing assembly by at least one membrane and being movable relative to the casing assembly; and a functional chamber, which chamber contains a working fluid, the functional chamber being delimited by a pumping surface that is formed by the core assembly and the membrane. A projection surface of the pumping surface that is orthogonal to an axial direction covers between 60% and 99% of a cross-sectional area, orthogonal to the axial direction, of the interior of the casing assembly, in which the membrane and the core assembly are received at least in part.

A railway vehicle and an axle box structure thereof are provided. The axle box structure includes an axle box body and a positioning node mounting seat. The axle box body includes an upper box body and a lower box body. The upper box body and the lower box body enclose a bearing mounting chamber together. A lower end surface of the upper box body has a convex portion, and an upper end surface of the lower box body has a concave portion. A first semi-circular hole and a second semi-circular hole are respectively provided at the middle of the upper box body and the lower box body. If the convex portion and the concave portion are assembled in a sealed coupling manner, the bearing mounting chamber is formed by the first semi-circular hole and the second semi-circular hole.

A railway vehicle and an axle box structure thereof are provided. The axle box structure includes an axle box body and a positioning node mounting seat. The axle box body includes an upper box body and a lower box body. The upper box body and the lower box body enclose a bearing mounting chamber together. A lower end surface of the upper box body has a convex portion, and an upper end surface of the lower box body has a concave portion. A first semi-circular hole and a second semi-circular hole are respectively provided at the middle of the upper box body and the lower box body. If the convex portion and the concave portion are assembled in a sealed coupling manner, the bearing mounting chamber is formed by the first semi-circular hole and the second semi-circular hole.

An axlebox of railway vehicle bogie comprising a housing, a front cover fixed to a front side of the housing, a rear cover fixed to a rear side of the housing, a cylindrical roller bearing unit, an end cap and a backing ring. A rear chamber and a front chamber on both axial sides of the sealed bearing unit are in fluidic connection through a bypass system.