A railcar truck and adapter pad system for placement between a roller bearing and side frame pedestal roof of a three-piece railcar truck. Many different features of the pad and/or the adapter-pad interface are configured to improve stiffness characteristics to satisfy both curving and high speed performance of the railcar truck.

A side bearing assembly for a truck assembly of a rail vehicle includes a base, a cap moveably coupled to the base, and one or more elastomer springs disposed between the base and the cap. The one or more elastomer springs include a foam having air pockets that are configured be compressed.

A vehicle truck includes a first side frame, a second side frame, a bolster, a first yaw separator connected to the first side frame, and a second yaw separator connected to the second side frame. Each yaw separator includes two steering arms and an arm connector assembly. The yaw separators are configured to alter yaw movement of the truck that leads to truck hunting.

A friction assist side bearing assembly for a truck assembly of a rail vehicle includes a first friction member, a second friction member that opposes the first friction member, and a cap coupled to the first friction member and the second friction member. The cap is configured to contact a portion of a car body coupled to the truck assembly.

A side bearing assembly for a truck assembly of a rail vehicle includes a base, a cap moveably coupled to the base, and one or more elastomer springs disposed between the base and the cap. The one or more elastomer springs include a foam having air pockets that are configured be compressed.

A railcar truck and adapter pad system for placement between a roller bearing and side frame pedestal roof of a three-piece railcar truck. Many different features of the pad and/or the adapter-pad interface are configured to improve stiffness characteristics to satisfy both curving and high speed performance of the railcar truck.

A side bearing for freight bogies of railway transport comprising a base, a plate, a cap, and a resilient element. The base has an annular protruding element, a centering protruding element, and two lateral protruding elements. The lateral protruding elements have J-shaped recesses. The plate has an annular protruding element with lugs, and an aperture for receiving the cap. The cap has an annular protruding element and a centering protruding element. A central opening is provided in the body of the resilient element for positioning on the protruding elements of the base and cap. The annular protruding element of the plate is telescopically mounted inside the annular protruding element of the base, and the cap is mounted inside the aperture of the plate. The lugs of the annular protruding element snap into the J-shaped recesses of the lateral protruding elements.

In one aspect of the present disclosure, a side bearing is provided for supporting a body of a rail car. The side bearing includes a base for being mounted to a truck of the rail car, a support configured to contact the body of the rail car and move along a vertical axis relative to the base with movement of the body, and at least one resilient foam member configured to deform with movement of the support. The side bearing further includes at least one friction damping member configured to be urged in a direction transverse to the vertical axis against the base by the support and resist movement of the support relative to the base.

An adapter pad system including a roller bearing adapter and a roller bearing adapter pad for placement between a roller bearing and side frame pedestal roof of a three-piece railcar truck.

A vehicle truck includes a first side frame, a second side frame, a bolster, a first yaw separator connected to the first side frame, and a second yaw separator connected to the second side frame. Each yaw separator includes two steering arms and an arm connector assembly. The yaw separators are configured to alter yaw movement of the truck that leads to truck hunting.