Dynamic oil scavenge system

In a gas turbine engine having:

• a centrifugal compressor having a hub portion extending from a compressor shaft to define an open ended annular channel;
• a gearbox casing circumscribing and radially spaced from a rotating turbine shaft concentric about the axial centerline of said engine, said casing having an axial end portion extending into said annular channel;
• a gear shaft disposed between said casing and said turbine shaft and drivingly coupled to said turbine shaft and said compressor shaft;
• a rolling element bearing disposed adjacent said annular channel and mounted to said gear shaft and having a first axial end receiving a lubricant and a second axial end expelling said lubricant, said bearing including an inner race mounted to said gear shaft, an outer race concentric with said inner race, and a plurality of rolling elements mounted therebetween;
• an annular bearing liner disposed between said casing and said outer race and having a plurality of axially extending, helical grooves along its outer surface;
• and
• a plurality of circumferentially spaced apart. scoops integral with said liner and extending radially inward adjacent said second axial end of said bearing, said scoops defining a plurality of radial passageways each of which curves into one of said helical grooves.