Abstract: A backing ring assembly is for a railcar axle assembly including a shaft with a central axis and a bearing mounted on the shaft. An annular backing ring is disposeable upon the shaft between the bearing and a shaft enlarged section and has a central axis, an inner surface extending about the axis and defining a central bore for receiving the shaft and a retention surface facing away from the shaft enlarged section when the backing ring is disposed upon the shaft. A retainer includes an annular body, disposeable about the shaft enlarged section and having an inner surface sized to frictionally engage with the shaft enlarged section cylindrical surface, and at least one coupler connected with the annular body. The coupler(s) engage with the ring retention surface to releasably connect the retainer annular body with the backing ring to retain the ring at a fixed position on the shaft.

Abstract: A backing ring assembly is for a railcar axle assembly including a shaft with a central axis and a bearing mounted on the shaft. An annular backing ring is disposeable upon the shaft between the bearing and a shaft enlarged section and has a central axis, an inner surface extending about the axis and defining a central bore for receiving the shaft and a retention surface facing away from the shaft enlarged section when the backing ring is disposed upon the shaft. A retainer includes an annular body, disposeable about the shaft enlarged section and having an inner surface sized to frictionally engage with the shaft enlarged section cylindrical surface, and at least one coupler connected with the annular body. The coupler(s) engage with the ring retention surface to releasably connect the retainer annular body with the backing ring to retain the ring at a fixed position on the shaft.

Abstract: An axle box for a railway vehicle bogie comprises a rolling bearing having an outer ring element, an inner ring element, rolling elements mounted there between, and a seal element, the inner ring element being adapted to be secured by screw bolts to an axial end of bogie axle. The axle box comprises an end cap comprising a flange with an inner face and an outer face, an annular first radial surface portion of the inner face being so defined that it is able to lean against an axial end of the inner bearing ring element of the rolling bearing. The flange comprises a central part traversed by screw bores. The flange comprises a first inner axial ridge running alongside the outer circumference of the cap, and extending axially towards the rolling bearing all around the flange, further than the first radial surface portion.

Abstract: An axle box for a railway vehicle bogie comprises a rolling bearing having an outer ring element, an inner ring element, rolling elements mounted there between, and a seal element, the inner ring element being adapted to be secured by screw bolts to an axial end of bogie axle. The axle box comprises an end cap comprising a flange with an inner face and an outer face, an annular first radial surface portion of the inner face being so defined that it is able to lean against an axial end of the inner bearing ring element of the rolling bearing. The flange comprises a central part traversed by screw bores. The flange comprises a first inner axial ridge running alongside the outer circumference of the cap, and extending axially towards the rolling bearing all around the flange, further than the first radial surface portion.