Patent ID: 8876390

Claim:
A load slot bearing system for a mounting system for a gearbox on a geared turbofan engine, the load slot bearing assembly comprising: an inner member comprising a cobalt alloy and having a spherical outer diameter and a bore extending at least partway therethrough, the spherical outer diameter defining an outer engagement surface; an outer member comprising a precipitation-hardened nickel-based super alloy and having a spherical inner diameter defining an inner engagement surface and positioned on the outer engagement surface of the inner member and contoured to a shape complementary to the outer engagement surface of the inner member such that the outer engagement surface of the inner member is slidably and rotatably engaged with the inner engagement surface of the outer member; wherein the inner engagement surface of the outer member has boron diffused therein to create a case depth, the case depth including intermetallic borides, the intermetallic borides configuring the inner engagement surface to maintain a predetermined hardness up to about 315.6° C. (600° F.); a first slot extending axially inward from an axial face defined by the outer member; a second slot extending axially inward from the axial face defined by the outer member, the second slot being positioned generally diametrically opposite the first slot; a first element located in the bore of the inner member of the load slot bearing assembly and connected to the inner member; and a second element connected to the outer member of the load slot bearing assembly.