Patent ID: 8920039

Claim:
A tandem rolling bearing comprising: an inner and outer bearing ring each defining at least two races; a first rolling element subassembly including a first plurality of rolling elements and a first cage located in a first pair of the races in the inner and outer bearing rings, wherein the first cage comprises a first ring having a plurality of axially extending projections each having an axial free end and rolling element retaining pockets defined between each adjacent pair of the projections, each of the projections includes a pair of radially outer lugs extending in a circumferential direction into adjacent ones of the pockets, the radially outer lugs that extend from adjacent ones of the projections into each of the pockets define a radially outer retaining surface for a respective one of the first plurality of rolling elements in the respective pocket, a partially spherical surface on an inner surface of the first ring, and respective radially inner partially cylindrical surfaces located between the projections of each of the pockets contact a respective one of the first plurality of rolling elements; and a second rolling element subassembly including a second plurality of rolling elements and a second cage located in a second pair of the races in the inner and outer bearing rings, wherein the second cage comprises a second ring having a plurality of axially extending projections each having an axial free end and rolling element retaining pockets defined between each adjacent pair of the projections, each of the projections includes a pair of radially inner lugs extending in the circumferential direction into adjacent ones of the pockets, the radially inner lugs that extend from adjacent ones of the projections into each of the pockets define a radially inner retaining surface for a respective one of the second plurality of rolling elements in the respective pocket, a partially spherical surface on an inner surface of the second ring, and respective radially outer partially cylindrical surfaces located between the projections of each of the pockets contact a respective one of the second plurality of rolling elements, and the free ends of the projections of the first and second cages face one another.