Bearings – Rotary bearing – Antifriction bearing
Patent
1982-12-22
1985-02-19
Levy, Stuart S.
Bearings
Rotary bearing
Antifriction bearing
184 611, 415180, F16C 3700, F01D 2512, F02C 706
Patent
active
045001430
ABSTRACT:
A clearance control device in an inter-shaft turbojet engine bearing journal placed between a high pressure trunnion and a low pressure trunnion and including inserted between an inner ring and an outer ring, the high pressure trunnion including a series of longitudinal grooves and a series of longitudinal holes which are supplied with oil from an intake and an annular collector in the low pressure trunnion, from which the oil moves by centrifugation through radial holes into an annular recess in the downstream tightening nut of the outer ring, which in turn communicates with the grooves through holes formed in the nut. Clearance in the bearing journal is controlled by cooling the high pressure trunnion at the maximum operating speeds of the turbine via circulating oil. By virtue of an appropriate circuit, the oil supplied by the collector lubricates the bearing and cools the roller bearing journal.
REFERENCES:
patent: 2652294 (1953-09-01), Islip
patent: 2866522 (1958-12-01), Morley et al.
patent: 3269786 (1966-08-01), Diver et al.
patent: 3393024 (1968-07-01), Rhodes
patent: 4265334 (1981-05-01), Benhase, Jr.
patent: 4378197 (1983-03-01), Cattaneo et al.
Crozet Francois E. G.
Kervistin Robert
Lardellier Alain M. J.
Mazeaud Georges
Levy Stuart S.
S.N.E.C.M.A.
Werner David
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