US 12,247,617 B2
Cavitation resistant journal bearing
Mark W. Shoemaker, Pecatonica, IL (US); and Ryan Shook, Loves Park, IL (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Dec. 8, 2022, as Appl. No. 18/077,837.
Prior Publication US 2024/0191752 A1, Jun. 13, 2024
Int. Cl. F16C 33/12 (2006.01); F04C 2/18 (2006.01)
CPC F16C 33/121 (2013.01) [F04C 2/18 (2013.01); F04C 2240/54 (2013.01); F04C 2240/56 (2013.01); F16C 2360/00 (2013.01)] 20 Claims
OG exemplary drawing
 
8. A journal bearing for a gear driven pump, comprising:
a bearing body having a bearing body circular opening that defines a bearing surface along a length of the bearing body, wherein:
the bearing surface is configured to carry a gear shaft load through a hydrodynamic fluid film pressure between a load surface of a gear shaft and the bearing surface,
the bearing body circular opening and bearing surface are sized to receive the gear shaft and to form a hydrodynamic fluid film between load surface and bearing surface when the gear driven pump is in operation, and
the bearing surface is formed from a leaded bronze material; and
a face plate adjacent to the bearing surface and configured to interface with a gear on the gear shaft, wherein:
the face plate includes a face plate circular opening sized to permit the gear shaft to be received by the bearing body circular opening and bearing surface and
the face plate is formed from a copper-nickel alloy;
wherein portions of the bearing body other than the bearing surface are made from a structural bearing material, wherein the structural bearing material is an aluminum or titanium alloy.