Patent ID: 7144162

Claim:
A rolling element bearing cage comprising: a circular ring having inner and outer surfaces comprising a plurality of cage pockets at predetermined intervals along a circumference of the circular ring; wherein at least one of the cage pockets has a first inner face at a leading edge and a second inner face at a trailing edge; wherein at least one of the cage pockets has at least two first grooves on the first inner face of the leading edge and at least two second grooves on the second inner face of the trailing edge, the first grooves running the length of the first inner face and the second grooves running the length of the second inner face, each groove having a length and a width, the length being greater than the width and extending from the inner surface of the circular ring to the outer surface of the circular ring; and at least one rolling element, wherein the rolling element is disposed in the cage pocket and the rolling element bearing cage is part of a high-speed turbine engine and a high-speed turbo-pump.