Railcar adapter for connecting a railcar body to a bearing

The railcar adapter for radially connecting a railcar body to a bearing, and comprising:

• two lateral channels each delimited by a pair of opposed lugs and a lateral guiding surface perpendicular to the opposed lugs, lateral channels being adapted to cooperate with the railcar body,
• two frontal flanges that inwardly protrude with respect to the inner surface, and that delimit with the inner surface a housing for the bearing,
• an inner surface acting as a bearing seat for the bearing, and
• an outer surface adapted to be in direct radial contact with the railcar body, wherein
• the outer surface, in cross-section through the axis of rotation of bearing, is curved, and wherein
• the lateral guiding surfaces of lateral channels, in cross-section through a plane perpendicular to the axis of rotation of bearing, are curved.

A railcar adapter assembly comprising:

• a railcar adapter,
• a bearing mounted inside the railcar adapter,
• a backing ring adapted to come into axial contact with the bearing at a first side, and
• an end cap assembly adapted to come into axial contact with the bearing at another side, opposite to the first side, the railcar adapter comprising:
• two lateral channels each delimited by a pair of opposed lugs and a lateral guiding surface perpendicular to the opposed lugs, lateral channels being adapted to cooperate with the railcar body,
• two frontal flanges that inwardly protrude with respect to the inner surface, and that delimit with the inner surface a housing for the bearing,
• an inner surface acting as a bearing seat for the bearing, and
• an outer surface adapted to be in direct radial contact with the railcar body, wherein
• the lateral guiding surfaces of lateral channels, in cross-section through a plane perpendicular to the axis of rotation of bearing, are curved.

A railcar adapter assembly comprising:

• a railcar adapter,
• a bearing mounted inside the railcar adapter,
• a backing ring adapted to come into axial contact with the bearing at a first side, and
• an end cap assembly adapted to come into axial contact with the bearing at another side, opposite to the first side, the railcar adapter comprising:
• two lateral channels each delimited by a pair of opposed lugs and a lateral guiding surface perpendicular to the opposed lugs, lateral channels being adapted to cooperate with the railcar body,
• two frontal flanges that inwardly protrude with respect to the inner surface, and that delimit with the inner surface a housing for the bearing,
• an inner surface acting as a bearing seat for the bearing, and
• an outer surface adapted to be in direct radial contact with the railcar body, wherein
• the outer surface, in cross-section through the axis of rotation of bearing, is curved, and wherein
• the lateral guiding surfaces of lateral channels, in cross-section through a plane perpendicular to the axis of rotation of bearing, are curved.

A railcar axle comprising:

• a railcar adapter assembly including a bearing mounted inside the railcar adapter,
• a backing ring adapted to come into axial contact with the bearing at a first side, and
• an end cap assembly adapted to come into axial contact with the bearing at another side, opposite to the first side,
• a shaft being rotatably mounted about an axis of rotation relative to a railcar adapter, inside the bearing, the shaft comprising a first end mounted radially inside the backing ring and a second end, opposite to the first end, secured to the end cap assembly, the railcar adapter comprising:
• two lateral channels each delimited by a pair of opposed lugs and a lateral guiding surface perpendicular to the opposed lugs, lateral channels being adapted to cooperate with the railcar body,
• two frontal flanges that inwardly protrude with respect to the inner surface, and that delimit with the inner surface a housing for the bearing,
• an inner surface acting as a bearing seat for the bearing, and
• an outer surface adapted to be in direct radial contact with the railcar body, wherein
• the lateral guiding surfaces of lateral channels, in cross-section through a plane perpendicular to the axis of rotation of bearing, are curved.

A railcar axle comprising:

• a railcar adapter assembly including a bearing mounted inside the railcar adapter,
• a backing ring adapted to come into axial contact with the bearing at a first side, and
• an end cap assembly adapted to come into axial contact with the bearing at another side, opposite to the first side,
• a shaft being rotatably mounted about an axis of rotation relative to a railcar adapter, inside the bearing, the shaft comprising a first end mounted radially inside the backing ring and a second end, opposite to the first end, secured to the end cap assembly, the railcar adapter comprising:
• two frontal flanges that inwardly protrude with respect to the inner surface, and that delimit with the inner surface a housing for the bearing,
• an inner surface acting as a bearing seat for the bearing, and
• an outer surface adapted to be in direct radial contact with the railcar body, wherein
• the outer surface, in cross-section through the axis of rotation of bearing, is curved, and wherein
• the lateral guiding surfaces of lateral channels, in cross-section through a plane perpendicular to the axis of rotation of bearing, are curved.