US 11,655,853 B2
Bearing cage and bearing
Hongyuan An, Shanghai (CN); and Riccardo Restivo, Turin (IT)
Assigned to Aktiebolaget SKF
Filed by Aktiebolaget SKF, Gothenburg (SE)
Filed on Sep. 13, 2021, as Appl. No. 17/473,898.
Claims priority of application No. 102020000021943 (IT), filed on Sep. 18, 2020.
Prior Publication US 2022/0090632 A1, Mar. 24, 2022
Int. Cl. F16C 19/06 (2006.01); F16C 33/41 (2006.01); F16C 33/66 (2006.01)
CPC F16C 33/418 (2013.01) [F16C 19/06 (2013.01); F16C 33/6614 (2013.01); F16C 33/6629 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A bearing cage for a ball bearing, comprising:
an annular backbone portion comprising a front side and an opposite back side;
a plurality of cantilever portions extending from the front side of the backbone portion in an axially forward direction of the bearing cage, the plurality of cantilever portions arranged along a circumference of the annular backbone portion and defining a plurality of pockets for accommodating rolling elements of the bearing, wherein each of the plurality of cantilever portions comprises two prong portions and a connection portion between the two prong portions; and
a plurality of grooves formed in a radially inner side of the bearing cage,
wherein,
the backbone portion comprises a radial thickness which is larger than a radial thickness of each of the cantilever portions of the plurality of cantilever portions, and
the connection portion comprises:
a first segment adjacent to the backbone portion and extending in an inclined direction relative to an axis of the bearing cage; and
a second segment away from the backbone portion and substantially parallel to the axis of the bearing cage.