US 11,732,756 B2
Reinforced casing for food applications
Fausto Baracca, Massa (IT); Alessio Nebbia Colomba, Pisa (IT); Andrea A Bertolini, Carrara (IT); and Fabio Cavacece, Rome (IT)
Assigned to AKTIEBOLAGET SKF
Filed by AKTIEBOLAGET SKF, Gothenburg (SE)
Filed on Jan. 30, 2022, as Appl. No. 17/588,298.
Claims priority of application No. 102021000002192 (IT), filed on Feb. 3, 2021.
Prior Publication US 2022/0243770 A1, Aug. 4, 2022
Int. Cl. F16C 35/04 (2006.01); F16C 23/08 (2006.01)
CPC F16C 35/045 (2013.01) [F16C 23/084 (2013.01); F16C 2204/60 (2013.01); F16C 2208/00 (2013.01); F16C 2220/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A casing of a bearing unit for food applications, made of polymeric material, the casing comprising:
an internal spherical seat configured for housing the bearing unit;
a reinforcement metal ring co-molded inside the casing and disposed annularly around the spherical seat; and
a plurality of spaces defined in the casing as a result of removing pins that supported the reinforcement metal ring during a co-molding operation; and at least one elastomer filler block filling at least one of the plurality of spaces.
 
7. A casing of a bearing unit for food applications, made of polymeric material the casing comprising:
an internal spherical seat configured for housing the bearing unit;
a reinforcement metal ring co-molded inside the casing and disposed annularly around the spherical seat;
wherein a width (A) in an axial direction of the reinforcement metal ring is not greater than 1 mm less than a width (D) of a radially outer ring of the bearing unit in the axial direction.
 
8. A casing of a bearing unit for food applications, made of polymeric material and comprising internally a spherical seat for housing the bearing unit, the casing comprising a reinforcement metal ring co-molded inside the casing and disposed annularly around the spherical seat, a plurality of spaces defined in the casing as a result of removing pins that supported the reinforcement metal ring during a co-molding operation; and at least one elastomer filler block filling at least one of the plurality of spaces, wherein a thickness (T) of the reinforcement metal ring is not less than 1 mm, wherein a width (A) in an axial direction of the reinforcement metal ring is not greater than 1 mm less than a width (D), of a radially outer ring of the bearing unit in the axial direction, wherein a distance (C) of the reinforcement metal ring from a spherical surface of the spherical seat is not less than 1 mm, wherein a distance (E) of the reinforcement metal ring from an external surface of the casing is not less than 1 mm, and wherein an outer diameter (B) of the reinforcement metal ring is obtained from the following formula:
B=(S+2T+2C)
wherein S is a diameter of the spherical seat, T is a thickness of the reinforcement metal ring, and C is a distance of the reinforcement metal ring from a spherical surface of the spherical seat.