INTERSHAFT BEARING ASSEMBLY Russian patent published in 2005 - IPC

FIELD: universal machine building, applicable in bearing assemblies of multishaft gas-turbine engine, for example, intershaft and interotor bearing assemblies, in which the inner and outer rings rotate simultaneously.

SUBSTANCE: the intershaft bearing assembly has a shaft with ducts for oil supply, rolling bearing consisting of an outer and inner rings, roller, separator centered by one of the rings, mainly the outer one, and oil manifolds with lubricating ducts, located at the ends of the inner ring. The ends of inner ring of the bearing have recesses directed towards the seprator. The end face surfaces of the oil manifolds adjoining the inner ring of the bearing are provided with shoulders located accordingly recesses on the inner ring and repeating the shape of the given recesses, and the lubricating duct is formed by the walls of the shoulder on the oil manifolds and recesses on the inner ring. Cylindrical recesses, whose walls form a space with the walls of the inner ring, are made on the inner mounting surface of the oil manifolds. The outer diameter of the oil manifolds is less than the inner diameter of the separator. The lubricating ducts are inclined to the side opposite the rotation of the inner ring.

EFFECT: enhanced efficiency of bearing lubrication and cooling due to delivery of lubricant directly under separator.

2 cl, 5 dwg