A bearing assembly (10) comprises a shaft end (70) defining a geometrical shaft axis (72) and provided with a convex annular slide bearing face (74) around the shaft axis (72), the convex annular slide bearing face (74) having a constant radius of curvature (R2) and a centre of curvature (C2), the convex annular slide bearing face (74) being located between two parallel geometrical transverse planes (P21, P22) perpendicular to the shaft axis (72), the centre of curvature (C2) being located on the shaft axis (72) between the two transverse planes (P21, P22) at a distance of each of the transverse planes (P21, P22) smaller than the radius of curvature (R2). The bearing assembly further comprises a roller bearing (12) comprising an outer race ring assembly (14), an inner race ring assembly (16) and two annular rows (18, 20) of rolling bodies (22) which roll between associated annular raceways (24, 26, 28, 30) formed on the inner and outer race ring assemblies (16, 14) to define a rotation axis (32) of the roller bearing (12). The inner race ring assembly (16) includes a cavity (62) with a concave annular slide bearing face (64) having a centre of curvature (C1) located on the rotation axis (32) and a constant radius of curvature (R1) equal to or larger than the radius of curvature (R2) of the convex annular slide bearing face (74) of the shaft end (70), and an insertion slot (66) having a width (W) measured in a transverse plane perpendicular to the rotation axis (32) and a length (L) measured in the transverse plane, the width (W) being larger than a distance (D2) between the two parallel geometrical planes (P21, P22), the length (L) being larger than a diameter of the convex annular slide bearing face (64), the insertion slot (66) being shaped to allow the insertion of the shaft end into the cavity.
