F - Mech Eng,Light,Heat,Weapons – 16 – C
Patent
F - Mech Eng,Light,Heat,Weapons
16
C
134/21, 308/1.5
F16C 32/06 (2006.01) F16C 17/10 (2006.01) F16C 33/10 (2006.01) F16C 33/74 (2006.01) G11B 19/20 (2006.01)
Patent
CA 1337662
A rotatable shaft/thrust plate combination is disposed within a sleeve to form a first clearance space between the shaft and the sleeve and a second clearance space between the thrust plate and the sleeve. The external faces of the thrust plate are exposed to air. The clearance spaces are filled with a liquid lubricant and the sleeve includes pressure equalization ports connecting the first and second clearance spaces. Surface tension dynamic seals are provided between axially extending surfaces of the thrust plate and sleeve. The equalization ports balance the hydrodynamic pressures in the lubricant to prevent the lubricant being pumped through one of the dynamic seals. The resulting bearing provides high precision with low repetitive and nonrepetitive runouts. The bearing provides hydrodynamic support of both radial and axial loads and the bearing seal is relatively insensitive to orientation of the spindle and minimizes the generation of debris and contaminating particles.
574570
Cordova Jackie
Schaule Max Werner
Titcomb Forrest
Quantum Corporation
Smart & Biggar
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