Patent ID: 7648277

Claim:
A device for supporting and guiding a shaft in rotation in a turbomachine, the device comprising: at least one bearing mounted around the shaft and an oil squeeze damper disposed around the bearing, said damper comprising a housing disposed in an outer case and defining an annular space around an outer ring of the bearing, wherein said annular space is configured to be filled with oil to form an oil film and is closed axially by annular sealing elements, wherein said annular sealing elements are configured to rotate freely in annular grooves in said outer bearing ring and each annular sealing element comprises an outer peripheral surface co-operating in sealed manner with an inner cylindrical surface of the case; the device further comprising at least one oil feed orifice disposed in the case; and oil outlet orifices disposed in the annular sealing elements configured to allow oil to flow in said annular space and configured to allow said oil to be cooled outside the annular space, wherein each annular sealing element includes calibrated oil outlet orifices disposed on the outer peripheral surface of said annular sealing element and arranged in such a manner as to substantially cancel a resultant of static forces generated in the oil film on rotation of the shaft and resulting from the oil leakage flows through said calibrated orifices, wherein the number of orifices disposed on each annular sealing element is less than 8, and wherein each annular sealing element is split by a splitting slot at a point around its circumference and has an even or odd number of calibrated oil outlet orifices, said orifices and the splitting slot in the annular sealing element being distributed so as to be substantially equidistant from one another around the circumference of the annular element.