HYDROSTATIC BEARING Russian patent published in 2005 - IPC

FIELD: mechanical engineering.

SUBSTANCE: invention can be used as support members of spindle units of metal cutting machine tools and other equipment using as working medium not only liquids, but gases as well. Proposed hydrostatic bearing contains housing with radial channel communicating with lubricant feed source, shaft and movable bushing located in space between housing and shaft and forming slot throttling clearance with shaft surface. Ring channel communicating with lubricant feed source is made in middle plane of bearing from outer side of bushing. Outer cylindrical surface of bushing is provided with ring projections at both ends, thus forming stepped throttling clearance with housing. Slot throttling clearance are formed between housing and shaft and between end face surfaces of bushing and housing. Slot clearance, being damping throttle, is made in middle part of movable bushing between ring channel and slot throttling clearance separating shaft and movable bushing. Slot throttling clearance between surfaces of movable bushing and housing mated with surfaces of shaft form stepped throttling slot.

EFFECT: reduced power losses for delivering lubricant to bearing at preservation of possibility of getting low positive, zero and negative liability and preservation of possibility of rotation of bushing owing to viscous friction forces.

2 dwg