A railcar adapter for radially connecting a railcar body to a bearing. The railcar adapter provides an adapter body, and a top cover mounted onto an outer surface of the adapter body. The top cover is includes at least one recess receiving a radially outwardly projecting pin provided to the outer surface of adapter body. The top cover is adapted to be in direct radial contact with the railcar body.

A railcar adapter for radially connecting a railcar body to a bearing. The railcar adapter provides an adapter body, and a top cover mounted onto an outer surface of the adapter body. The top cover is includes at least one recess receiving a radially outwardly projecting pin provided to the outer surface of adapter body. The top cover is adapted to be in direct radial contact with the railcar body.

The present invention relates to a bogie structure for a mountain railway car. The bogie structure is configured as follows: a traction motor for driving an axle of mountain railway car is installed on a car body to simplify the bogie structure and to minimized interference between the traction motor and other components constituting the bogie, and a first and a second bearing are respectively inserted and installed between a first and a second axle and a first and a second wheel, so that a first and a second wheel located in one side close to a turning center are rotated less than a first and a second wheel located in the other side opposite thereof and a traveling distance of the wheels located in the turning-centered side is generated corresponding to a length of a turning-centered side railway, whereby the mountain railway car is improved in traveling stability.

A bearing device for an axle has: a first axial gap (G1), which is defined between the inner ring (3) and the back cover (11) in an axial direction, and has the spacer (21) interposed therein; a second axial gap (G2), which is larger than the first axial gap (G1), and has the sealing member (22) interposed therein; and a third axial gap (G3), which is defined on a radially outer side of the second axial gap (G2), and is smaller than the second axial gap (G2).

A bearing device for an axle has: a first axial gap (G1), which is defined between the inner ring (3) and the back cover (11) in an axial direction, and has the spacer (21) interposed therein; a second axial gap (G2), which is larger than the first axial gap (G1), and has the sealing member (22) interposed therein; and a third axial gap (G3), which is defined on a radially outer side of the second axial gap (G2), and is smaller than the second axial gap (G2).

An axle box for a railway vehicle including a casing provided with a through-bore extending along a median axis, a journal unit accommodated in the bore, a front cover, and a rear cover. At least one part of the front and rear cylindrical parts of the front and rear covers, respectively, having a threaded exterior surface screwed into a tapped portion of the central bore of the casing.

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.

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.