Blocking end cap for a rolling bearing and supporting device for a railway axle equipped therewith

摘要

A blocking end cap for a rolling bearing in a railway axle box of a supporting device for a railway axle is provided. The cap is shaped as a concave disc delimited by an annular side wall having a symmetry axis (A), a bottom wall arranged transversely to the symmetry axis (A), and an elbow-shaped, annular joining portion, connecting the bottom wall to the side wall. The thickness of the bottom wall measured in a direction parallel to the symmetry axis (A) is continuously variable in the radial direction between a maximum (S1) situated at the symmetry axis (A) and a minimum (S2) arranged at a radially outer edge of the cap defined by the side wall.

主权项

1. A blocking end cap for a rolling bearing for installation in a railway axle box of a supporting device for a railway axle, the cap being shaped as a concave disc delimited by an annular side wall having a symmetry axis (A) coaxial, to a symmetry axis (B) of the bearing, by a bottom wall arranged transversely to the symmetry axis (A), and by an elbow-shaped, annular joining portion, connecting the bottom wall to the side wall; the bottom wall being provided with a plurality of through holes for respective screws for fastening, the cap to the axle, and the side wall further comprises a frontal annular surface that faces away from the bottom wall and toward the rolling bearing, the frontal annular surface being spaced from the bottom wall, the frontal annular surface further adapted to abut against a ring of the bearing; wherein
i) the thickness of the bottom wall measured in a direction parallel to the symmetry axis (A) is continuously variable in the radial direction between a maximum (S1) situated at the symmetry axis (A) and a minimum (S2) arranged at a radially outer edge of the cap defined by the side wall; ii) flat bulges are obtained on the bottom wall, only at the through holes thereof, and on an outer frontal surface thereof, which bulges provide thickenings of the cap adapted to receive respective heads of the fastening screws in abutting manner.