US 11,808,303 B2
Casing reinforced with ribs for food applications
Ettore Bertelloni, Massa (IT); Andrea A Bertolini, Carrara (IT); and Pasquale Frezza, Aversa (IT)
Assigned to AKTIEBOLAGET SKF
Filed by AKTIEBOLAGET SKF, Gothenburg (SE)
Filed on Feb. 15, 2022, as Appl. No. 17/672,289.
Claims priority of application No. 102021000003815 (IT), filed on Feb. 19, 2021.
Prior Publication US 2022/0268317 A1, Aug. 25, 2022
Int. Cl. F16C 35/02 (2006.01); F16C 35/04 (2006.01)
CPC F16C 35/02 (2013.01) [F16C 35/047 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A casing of a bearing unit comprising:
a base, the base comprising at least one hole for receiving at least one fixing bolt,
a spherical seat for housing the bearing unit, and
at least one reinforcing rib located between the hole and the spherical seat,
wherein the casing has a pair of holes and the at least one reinforcing rib comprises two pairs of ribs, each pair of ribs located between a respective hole of the pair of holes and the spherical seat,
wherein a distance between an axis of symmetry (X) of each of the pair of ribs and a wall of the base is equal to half a width (A) of the base,
wherein a minimum spacing (Jmin) between a center of symmetry of each pair of ribs is:
Jmin>J−2 mm
wherein J is a distance between an axis of symmetry of a first hole of the pair of holes,
wherein a minimum radius (Rmin) measured from a center of symmetry of each of the pair of ribs is defined as:
Rmin>Φ+0.8 mm
wherein Φ is a diameter of at least one fixing bolt,
wherein an angle (α), measured on a plane orthogonal to the base, defines an average angle of inclination of the at least one reinforcing rib with respect to the base and ranges between 120° and 140°,
wherein an angle (β), measured on a plane parallel to the base, defines an average angle of inclination of each of the pair of ribs with respect to the axis of symmetry (X) and ranges between 40° and 50°,
wherein a width (C) of a lower base portion of a rib of the pair of ribs is:
C>B/2−0.8 mm
wherein B is a distance between a wall of the holes and the wall of the base, and
wherein the at least one rib comprises rounded surfaces with a radius of curvature between 0.8 mm and 2 mm.