A box type sealing structure including an oil throwing ring and sealing ring with a frame and sealing portion attached to the frame, the oil throwing ring including a centrifugal structure.

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).

A bearing assembly comprising a bearing cup having two ends, with a pair of outer raceways formed one adjacent each end of the bearing cup. A pair of bearing cones form a pair of inner raceways. Two rows of tapered roller bearings with each row received between one inner raceway and one outer raceway. A pair of wear rings are provided, each having a first axially inwardly directed end in engagement with an outwardly directed end of a bearing cone. A pair of seals each having a first end fitted into one into one of the bearing cup cylindrical counterbores. Each seal has a second end including a resilient element to form a seal with one of the wear rings. A second end of each wear ring is received in a cylindrical counterbore in each annular backing ring. A circular shroud is located radially outer and adjacent to one seal.

A bearing assembly comprising a bearing cup having two ends, with a pair of outer raceways formed one adjacent each end of the bearing cup. A pair of bearing cones form a pair of inner raceways. Two rows of tapered roller bearings with each row received between one inner raceway and one outer raceway. A pair of wear rings are provided, each having a first axially inwardly directed end in engagement with an outwardly directed end of a bearing cone. A pair of seals each having a first end fitted into one into one of the bearing cup cylindrical counterbores. Each seal has a second end including a resilient element to form a seal with one of the wear rings. A second end of each wear ring is received in a cylindrical counterbore in each annular backing ring. A circular shroud is located radially outer and adjacent to one seal.

A roller bearing unit for rail vehicles, having an inner bearing ring, an outer bearing ring, rolling elements arranged between the bearing rings, and at least one retainer element. The inner bearing ring and the retainer element are configured to be arranged on an axle. The retainer element is arranged radially between an axial end of the inner bearing ring and the axle, and radially between a contact part lying against the end face of the inner bearing ring, and the axle. The retainer element has at least one sealing element sealing the inner bearing ring.

A roller bearing unit for rail vehicles, having an inner bearing ring, an outer bearing ring, rolling elements arranged between the bearing rings, and at least one retainer element. The inner bearing ring and the retainer element are configured to be arranged on an axle. The retainer element is arranged radially between an axial end of the inner bearing ring and the axle, and radially between a contact part lying against the end face of the inner bearing ring, and the axle. The retainer element has at least one sealing element sealing the inner bearing ring.

A bearing assembly comprising a bearing cup having two ends, with a pair of outer raceways formed one adjacent each end of the bearing cup. A pair of bearing cones form a pair of inner raceways. Two rows of tapered roller bearings with each row received between one inner raceway and one outer raceway. A pair of wear rings are provided, each having a first axially inwardly directed end in engagement with an outwardly directed end of a bearing cone. A pair of seals each having a first end fitted into one into one of the bearing cup cylindrical counterbores. Each seal has a second end including a resilient element to form a seal with one of the wear rings. A second end of each wear ring is received in a cylindrical counterbore in each annular backing ring. A circular shroud is located radially outer and adjacent to one seal.

A bearing assembly comprising a bearing cup having two ends, with a pair of outer raceways formed one adjacent each end of the bearing cup. A pair of bearing cones form a pair of inner raceways. Two rows of tapered roller bearings with each row received between one inner raceway and one outer raceway. A pair of wear rings are provided, each having a first axially inwardly directed end in engagement with an outwardly directed end of a bearing cone. A pair of seals each having a first end fitted into one into one of the bearing cup cylindrical counterbores. Each seal has a second end including a resilient element to form a seal with one of the wear rings. A second end of each wear ring is received in a cylindrical counterbore in each annular backing ring. A circular shroud is located radially outer and adjacent to one seal.

A roller bearing unit for rail vehicles, having an inner bearing ring, an outer bearing ring, rolling elements arranged between the bearing rings, and at least one retainer element. The inner bearing ring and the retainer element are configured to be arranged on an axle. The retainer element is arranged radially between an axial end of the inner bearing ring and the axle, and radially between a contact part lying against the end face of the inner bearing ring, and the axle. The retainer element has at least one sealing element sealing the inner bearing ring.