COMBINED RADIAL BEARING WITH WIDE RANGE OF WORKING SPEEDS AND LOADS (VERSIONS) Russian patent published in 2018 - IPC F16C21/00 

FIELD: machine building.

SUBSTANCE: invention relates to the field of machine building, in particular to combined supports consisting of a rolling bearing and a sliding bearing with a gas lubricant, used for shafts of low- and high-speed radially loaded shafts radial suspension for various purposes, i. e. turbo-refrigerators, turbo-expanders, power generators, turbines of aircraft, land, water and underwater transport facilities, etc. Combined radial bearing comprises a detachable housing (2) with a concentrically arranged in it closed rolling bearing (1) and gas-dynamic sliding bearing. Rolling bearing (1) inner race outer surface is made with an antifriction coating, and the of the plain bearing (1) outer race is stationary fixed in the housing socket (2). Gas-dynamic sliding bearing hub (4) is fixedly mounted on the shaft (3), and on its outer side sectional grooves (5) are made with or without spring elements (6) fixed in them by elastic lugs (7) with antifriction coating. Bearing also contains protective washers (8) fixedly mounted on one of the rolling bearing rings (1), and on the rolling bearing rolling rings (1) rotating surface in the middle on both sides annular grooves (11, 14, 15) communicating via the radial openings (9, 10, 16) with the gas main line are made. Differences of the bearing in the second variant are that it additionally contains air intake washers (13) fixedly mounted on the bearing (1) inner race end face.

EFFECT: technical result: increase of bearings loading capacity at small and high speeds of rotation of the rotor while maintaining high damping capacity, reliability and durability with multiple start-stop cycles of rotor machines.

3 cl, 1 dwg