Entries |
Document | Title | Date |
20080205802 | RADIAL PISTON MACHINE - There is disclosed a radial piston machine comprising a cylinder block having at least one bore in which a piston supported on an eccentric disk is movably guided via roll bodies, wherein at least one hydrostatic relieving field is provided between the piston and the roll body. According to the invention, the active surface A | 08-28-2008 |
20080279492 | Fluid Dynamic Bearing Mechanism - A fluid dynamic bearing mechanism that can ensure bearing rigidity, reduce shaft loss torque, reduce power consumption, stabilize axial rotation, and improve rotational accuracy is disclosed. The fluid dynamic bearing mechanism being suitable for use in a hard disk drive. In the fluid dynamic bearing mechanism (equipped with a bearing case, endplate, and shaft) a cylindrical hole of the bearing case is changed to a stepped cylindrical hole that has a large diameter part and a small diameter part. The shaft is changed to a stepped shaft that has a large diameter part and a small diameter part. On the outer circumference of either the large diameter part of the stepped cylindrical hole, or the large diameter part of the stepped shaft, a first dynamic pressure groove is be formed. On the outer circumference of either the small diameter part of the stopped cylindrical hole or the small diameter part of the stepped shaft, a second dynamic pressure groove is being formed. On the surface of step part of the stepped cylindrical hole, the third dynamic pressure groove is formed. The small gaps that face each of the three dynamic pressure grooves are filled with a dynamic pressure generating lubricating oil. | 11-13-2008 |
20080279493 | HYDRODYNAMIC BEARING DEVICE, AND SPINDLE MOTOR AND INFORMATION DEVICE EQUIPPED WITH SAME - A bearing component | 11-13-2008 |
20080310778 | Air Foil Bearing Having a Porous Foil - There is provided an air foil bearing. The air foil bearing comprises a bearing house and a first foil, wherein a first end of the first foil is fixed with respect to the bearing housing and a second end of the first foil is extended along a peripheral surface of a rotating shaft while maintaining a predetermined clearance with respect to the rotating shaft to thereby become a free end. The air foil bearing also comprises a second foil fabricated from a porous metallic material and extended along the first foil between the first foil and the bearing housing. | 12-18-2008 |
20080317392 | Air purging for a fluid dynamic bearing - A robust spindle motor is provided having improved shock resistance for fluid containment, as well as enhanced air purging characteristics. In an aspect, axial displacement of relatively rotating components is restricted by utilizing a limiter situated adjacent to a limiter bushing forming an axial limiter gap therebetween. A fluid channel, at least partially diverging, extends from a hydrodynamic bearing to the axial limiter gap, and continues to a region beyond the axial limiter gap. In an aspect, an axially diverging slot is situated adjacent to the axial limiter gap. Power is reduced by reducing viscous drag between relatively rotating components, hydrodynamic bearing length is increased, and higher stiffness of the hydrodynamic bearing is provided. Fluid volume may be increased, thereby offsetting fluid evaporation losses and allowing for the use of lower viscosity lubricants. | 12-25-2008 |
20090016655 | Fluid Dynamic Bearing Device - A fluid dynamic bearing device in which leakage of a lubricating oil can be prevented is provided at low costs. | 01-15-2009 |
20090067764 | FLUID BEARING STRUCTURE AND ASSEMBLY METHOD FOR FLUID BEARING STRUCTURE - Materials with different thermal expansion coefficients are selected individually for a bearing guide and a slider that constitute a fluid bearing. The guide and the slider are combined in close contact with each other (i.e., with a zero bearing clearance between the two) in a temperature environment different from a temperature at which the fluid bearing is actually used. In consequence, the bearing clearance at the operating temperature can be adjusted based on a difference from the temperature for the fluid bearing assembly. | 03-12-2009 |
20090103839 | Fluid dynamic bearing motor having molded plastic - A fluid dynamic bearing motor and method are described, wherein motor components, including complex shaped motor components, are molded of plastic. The molding ensures form control and dimensional control thereby accomplishing design requirements, and eliminating or reducing component costs and component machining. The mold can be shaped to form various motor geometries, thereby eliminating the need for multiple component assembly and related assembly costs. In an aspect, a plastic integral motor hub is formed by injection molding. Alternatively, a plastic motor hub is affixed to a metal sleeve. In another aspect, fluid containment structures are molded into the motor component, reducing the number of components as compared with machined metal components. In a further aspect, bearing structures such as grooves are molded into the motor component, thereby eliminating processes such as electrochemical machining. In yet a further aspect, a plastic hub faces a thrustplate, reducing expensive sleeve machining. | 04-23-2009 |
20090103840 | BEARING MEMBER AND METHOD FOR MANUFACTURING THE SAME, AND BEARING UNIT HAVING BEARING MEMBER AND METHOD FOR MANUFACTURING THE SAME - A different-diameter clearance of high accuracy is created at low cost, thereby improving the bearing performance and the sealing capability. An inner periphery | 04-23-2009 |
20090103841 | Hydrodynamic bearing device and inspection method of amount of working fluid - A hydrodynamic bearing device in a hydrodynamic bearing device in which a sleeve ( | 04-23-2009 |
20090116771 | LUBRICANT COMPOSITION, BEARING OIL AND BEARING USING SAME - Disclosed is a lubricant composition comprising a base oil which contains 50% by mass or more of at least one of an α-olefin oligomer and a hydrogenated product of an α-olefin oligomer and in which the kinematic viscosity and the flash point satisfy the following relational equation (I): | 05-07-2009 |
20090129709 | HYDRODYNAMIC BEARING DEVICE, AND SPINDLE MOTOR AND INFORMATION APPARATUS EQUIPPED WITH SAME - The cross sectional shape of an axial direction communicating path when viewed in the axial direction is flat in the circumferential direction, and the cross sectional area of the communicating path gradually decreases moving from the center of the cross section toward the both ends in the circumferential direction. When a sleeve and a cover member are bonded with an adhesive, the adhesive is actively made to flow into an adhesive inflow portion. | 05-21-2009 |
20090142009 | FLUID DYNAMIC BEARING SYSTEM - Fluid dynamic bearing systems produced by specified methods are provided. In one example, a method for designing a fluid dynamic bearing system includes determining a first stability ratio for a first journal bearing configuration. The method further includes determining a second stability ratio for a second journal bearing configuration. In a further example system, the first configuration has two sub-journal bearings and the second configuration has three sub-journal bearings. The method may comprise comparing the two stability ratios to determine whether adding a sub-journal increases the stability ratio of the bearing system. | 06-04-2009 |
20090161998 | Method for optimizing a grooved bearing pattern on a bearing surface of a fluid dynamic bearing for the purpose of improving the bearing properties and an appropriate grooved bearing pattern - The invention relates to a method for optimizing a grooved bearing pattern on a bearing surface of a fluid dynamic bearing for the purpose of improving the bearing properties as well as an appropriately designed grooved bearing pattern, the grooved bearing pattern having a defined length, width and depth, and the bearing surface being moveable with respect to another associated bearing surface in at least one direction of movement, having the following steps: | 06-25-2009 |
20090196540 | DYNAMIC FLUID PRESSURE BEARING, SPINDLE MOTOR, DISK DRIVE APPARATUS AND METHOD FOR MANUFACTURING THE DYNAMIC FLUID PRESSURE BEARING - A fluid dynamic pressure bearing includes a shaft arranged along a central axis, an annular member fixed to the shaft, a sleeve, a lubricant, and a lubricating film. A stepped surface is provided on the outer circumferential surface of the shaft. The annular member preferably includes a lower surface extending radially with respect to the central axis and arranged to make contact with the stepped surface in the inner edge portion of the lower surface. The sleeve preferably includes an upper surface axially opposed to the lower surface of the annular member. The lubricant is provided between the shaft and the sleeve and between the annular member and the sleeve. The lubricating film is provided on the lower surface of the annular member at least over a region lying radially outwardly of the inner edge portion of the lower surface. | 08-06-2009 |
20090208152 | Tapered roller bearing apparatus - A tapered roller bearing for a pinion shaft according to the invention includes an inner ring that has an outer circumferential surface on which an inner ring raceway surface is formed and that is integrally fixed to a one-end-side of the pinion shaft, an outer ring that has an inner circumferential surface on which an outer ring raceway surface is formed and that is fixed to a housing, and a plurality of tapered rollers rollably interposed between both of the raceway surfaces. An annular oil reservoir groove for storing lubricating oil is formed in a distal end portion at the one-end-side in an axial direction of the inner circumferential surface by being recessed thereinto adjacent to the outer ring raceway surface. | 08-20-2009 |
20090279815 | GAS BEARINGS - A rotary gas bearing is described that comprises a first part rotatable relative to a second part. The first part comprises a support member and a first portion and a second portion attached to the support member. The first portion comprises a first bearing surface and the second portion comprising a second bearing surface. Both the first portion and the second portion are attached to the support member by screw thread connections. The second part may comprise complimentary bearing surfaces. Epoxy may be used to fix the first and/or second portions to the support member. A method of determining the bearing working gap by measuring gas flow through the bearing is also described. | 11-12-2009 |
20090279816 | FLUID DYNAMIC PRESSURE BEARING DEVICE, SPINDLE MOTOR AND DISK DRIVE APPARATUS INCLUDING SAME - In a fluid dynamic pressure bearing device using ionic liquid as lubricant, a shaft member and a sleeve member are not corroded by the ionic liquid and static electricity generated is not accumulated. Aluminum with an oxide film formed on its surface is used as the material of the shaft member | 11-12-2009 |
20090290821 | HYDRODYNAMIC BEARING DEVICE AND SPINDLE MOTOR USING THE SAME - A hydrodynamic bearing device being low in torque, low in power consumption, high in reliability and best suited for miniaturization and a spindle motor using the same. | 11-26-2009 |
20090297076 | FLUID DYNAMIC BEARING DEVICE - A hub portion of a fluid dynamic bearing device is formed from a resin composition in which polyphenylene sulfide (PPS) is employed as a base resin and with which carbon fibers are mixed. In this manner, the wear resistance and the conductivity can be improved. Alternatively, both portions of a stationary body and a rotating body of the fluid dynamic bearing device which portions face to each other through a bearing gap are formed from a resin composition in which polyphenylene sulfide (PPS) is employed as the base resin. In this manner, excellent wear resistance can be obtained. | 12-03-2009 |
20090297077 | Fluid dynamic pressure bearing and production method for the same - A fluid dynamic pressure bearing composed of a cylindrical sintered compact includes: a thrust region which is formed on an end surface of the bearing and receives at least a thrust load; a roughed portion having small peaks and valleys formed on the thrust region; and thrust recesses for generating thrust fluid dynamic pressure, which are formed on the thrust region. | 12-03-2009 |
20090324147 | THIN LIQUID FILM FOR A SPINDLE MOTOR GAS BEARING SURFACE - A system and method are provided for reduced power consumption and reduced wear in a spindle motor. The spindle motor includes a fluid dynamic bearing containing gas defined between a stationary component and a rotatable component. A liquid layer is coated on at least a portion of at least one of the rotatable component surface and the stationary component surface. The liquid layer is formed from a liquid having a predetermined concentration, and formed having a predetermined thickness. The predetermined thickness is accomplished utilizing at least one of a predetermined dwell time, withdraw velocity and bearing surface roughness. In an aspect, the liquid layer is formed with an increased thickness by at least one of increasing the liquid concentration, increasing the dwell time, and increasing the withdraw velocity. In an aspect, a method is provided to obtain thin liquid film thicknesses ranging from about 5 nm to about 350 nm. | 12-31-2009 |
20100002966 | FLUID DYNAMIC BEARING DEVICE AND PROCESS FOR MANUFACTURING THE SAME - Fixation strength of a bearing sleeve with respect to a housing is increased so that stable bearing performance can be achieved. A fluid dynamic bearing device ( | 01-07-2010 |
20100061669 | HOUSING FOR FLUID LUBRICATION BEARING APPARATUSES - A housing for fluid lubrication bearing apparatuses having improved adhesiveness with other components is provided at low costs. | 03-11-2010 |
20100254639 | FLUID DYNAMIC BEARING FILLED WITH LUBRICANT IN WORK AREA HAVING REDUCED PRESSURE, METHOD OF MANUFACTURING THE FLUID DYNAMIC BEARING, APPARATUS FOR MANUFACTURING THE FLUID DYNAMIC BEARING, AND ROTATING DEVICE - In an apparatus for manufacturing a fluid dynamic bearing, a housing portion defines a first work area. A vacuum pump discharges air in the first work area. A lubricant discharge device is arranged in the first work area, and discharges a lubricant into an inlet of a reservoir for storing the lubricant of the fluid dynamic bearing. At least one aperture is provided in the housing portion. A first door closes the aperture and a second door closes the aperture. Between the first door and the second door, when both have closed the aperture, a second work area is formed where the fluid dynamic bearing is placed. | 10-07-2010 |
20100284637 | COMPACT NON-CONTACT MECHANICAL COUPLING, DAMPING AND/OR LOAD BEARING DEVICE - Some embodiments relate to a compact noncontact mechanical coupling, damping, and/or load bearing device comprising an internal load bearing member and an external load bearing member mated in an interdigitated relation while maintaining a gap therebetween. Some embodiments include a means for maintaining the gap between the internal and external load bearing members including, without limitation, hydrostatic means, hydrodynamic means, electrorheological fluids, magnetorheological fluids, electric fields, and/or magnetic fields. | 11-11-2010 |
20100284638 | GAS BEARING SPINDLE - A gas bearing spindle includes a rotation shaft, a sleeve, and a housing. The sleeve includes a bearing portion formed of a nonmetallic sintered body; and a retaining ring formed of a metal. Further, the retaining ring and the bearing portion are in contact with each other at a first fit surface that is a boundary surface between the outer circumferential surface of the bearing portion and the inner circumferential surface of the retaining ring, as well as at a second fit surface that is a boundary surface between the outer circumferential surface of the bearing portion and the inner circumferential surface of the retaining ring, is distant further away from the sleeve through hole relative to the first fit surface, and is formed adjacent to a center of the sleeve through hole in a direction in which the sleeve through hole extends, when viewed from the first fit surface. | 11-11-2010 |
20100322540 | AEROSTATIC BEARING - An aerostatic bearing including a first bearing surface ( | 12-23-2010 |
20110002564 | SLIDE BEARING FOR HIGH ROTATION SPEEDS OF AN ANODE PLATE - A slide bearing for a rotating anode has a stationary bearing part, and multiple rotatable bearing parts are arranged concentrically around the stationary bearing part or within the stationary bearing part. The bearing parts have bearing surfaces between which are located bearing gaps filled with a fluid medium. The sliding friction of slide bearings can be markedly lowered with fluids given rotation frequencies greater than 200 Hz. At the same time the excellent heat dissipation is retained. | 01-06-2011 |
20110097025 | FLUID DYNAMIC BEARING DEVICE - In order to improve retention strength of a lid member without increase in size and reduction in bearing property of a bearing device, a fluid dynamic bearing device ( | 04-28-2011 |
20110222802 | RING FOR A HYDROSTATIC OR HYDRODYNAMIC BEARING, A HYRAULIC MACHINE EQUIPPED WITH SUCH A RING, AND A METHOD OF MOUNTING SUCH A RING ON A SHAFT - The invention relates to a ring ( | 09-15-2011 |
20110235953 | Bearing For Wind Turbine - A bearing has a circular element ( | 09-29-2011 |
20110280509 | SPINDLE MOTOR - Disclosed herein is a spindle motor. The spindle motor includes a rotating shaft and a sleeve. The rotating shaft has a stepped portion in a fluid dynamic pressure shafting system. The sleeve is fitted over the circumferential outer surface of the rotating shaft. A sleeve recess is formed in the inner surface of the sleeve so that the edges of the stepped portion are spaced apart from the sleeve. | 11-17-2011 |
20110299801 | VENTURI DRAIN FOR SELF-PUMPING BEARING ROLLING MILLS - A system is disclosed for use in a rolling mill oil film bearing to remove oil exiting from between a rotating sleeve and a fixed bushing surrounding the sleeve. The system comprises an annular chamber arranged to receive the exiting flow of oil. The chamber is isolated from a drainage sump by confinement surfaces including a seal interface defined by a flexible seal in contact with an adjacent rigid component of the bearing. Impellers project into the chamber and are rotable with and at the velocity of the sleeve to rotatively propel oil around the chamber. A discharge conduit communicates tangentially with the chamber and is arranged to receive a pressurized flow of the oil being rotatively propelled around the chamber. A venturi is located in the discharge conduit. A suction conduit connects the venturi to the drainage sump. Oil escaping from the annular chamber past the seal interface into the drainage sump is aspirated by the venturi for removal via the conduit. | 12-08-2011 |
20110317948 | HYDRODYNAMIC FOIL BEARING ASSEMBLY - A bearing housing of a hydrodynamic foil bearing assembly has an opening for allowing flow of a fluid into the bearing housing. Also included in the a hydrodynamic foil bearing assembly is at least one foil having at least one opening and defining a cylindrical hollow space for receiving a rotating shaft therein. Fluid is supplied from the opening of the bearing housing to a gap between the at least one foil and the rotating shaft through the at least one opening of the at least one foil to form a pressurized fluid film therein. | 12-29-2011 |
20110317949 | SINTERED METALLIC BEARING AND FLUID DYNAMIC BEARING DEVICE EQUIPPED WITH THE BEARING - A sintered metal bearing is obtained by compression-molding of a raw-material powder containing at least a Cu powder, an SUS powder, and a pure Fe powder and thereafter sintering a compression-molded body at a predetermined temperature. | 12-29-2011 |
20120014629 | Porous hydrodynamic bearing - There is provided a porous hydrodynamic bearing including a sleeve supporting a shaft, wherein the sleeve is formed of a sintered body containing at least one metal powder selected from a group consisting of SUS 304, SUS 430, and iron (Fe). In the sleeve formed of the sintered body containing at least one metal powder selected from the group consisting of SUS 304, SUS 430, and iron (Fe), surface pores and inner pores are not in communication with each other, whereby a leakage phenomenon of dynamic pressure may be reduced, as compared to a sleeve made of an alloy of Cu and Fe in which opened pores are formed. | 01-19-2012 |
20120020594 | Connection Component for Oil Film Bearings - A connection element able to be located between a part or neck of a rolling roll and a relative housing bushing as present in a chock for rolling stands, including a first external element and a second internal element, mating and coupled, wherein the second internal element has internally a seating at least partly truncated cone shaped for coupling with the neck of the rolling roll. | 01-26-2012 |
20120033904 | HYDRODYNAMIC GAS FILM BEARING COOLING FLOW CONTROL SYSTEM - A hydrodynamic gas film bearing cooling gas control system includes a hydrodynamic gas film bearing, a supply conduit, and a flow control device. The supply conduit is in fluid communication with the hydrodynamic gas film bearing, is coupled to receive a flow of cooling gas from a cooling gas supply source, and is configured to supply the flow of cooling gas to the hydrodynamic gas film bearing. The flow control device is coupled to the supply conduit and is responsive to a physical characteristic of the cooling gas or ambient environment to move between at least two positions to thereby vary the flow of cooling gas, through the supply conduit, to the hydrodynamic gas film bearing. | 02-09-2012 |
20120076449 | BEARING LUBRICATING OIL AND BEARING - A bearing oil contains a first monoester which is an ester of a branched chain fatty acid containing 18 carbon atoms or a monounsaturated fatty acid containing 18 carbon atoms and ethylhexyl alcohol. | 03-29-2012 |
20120093446 | ROTATING APPARATUS CAPABLE OF IMPROVING THE ROTATION RELIABILITY EVEN AFTER HAVING BEEN DOWNSIZED, AND METHOD FOR MANUFACTURING THE ROTATING APPARATUS - A disk drive device includes a base plate, a hub, and a bearing unit. The bearing unit includes an outer sleeve, an inner sleeve, a shaft, a radial dynamic pressure groove, and a lubricant agent. In the joined portion of the outer sleeve and the hub, there are formed a recessed portion, which is a binding region, where the outer sleeve and the hub are joined together with a hardening resin present between the outer sleeve and the hub and a tilt preventing portion, provided on both the sides of the recessed portion in the axial direction of the outer, which is a raised region that forms a portion narrower than a gap, between the outer sleeve and the hub, corresponding to the recessed portion. | 04-19-2012 |
20120093447 | SHAFT MEMBER FOR FLUID DYNAMIC BEARING DEVICE - A shaft member for a fluid dynamic bearing device that has a recess to cause a dynamic pressure effect of a fluid in a bearing clearance, which is formed on it by rolling, and where a surface layer portion of the recess and a surface layer portion of a surrounding region of the recess has a nitride layer, and where nitrogen is diffused and penetrated in a material of the shaft member that is formed by nitriding after the rolling. | 04-19-2012 |
20120243812 | FLUID DYNAMIC BEARING - A fluid dynamic bearing includes a body; an inner surface of the body being formed with a plurality of sawteeth trenches; each bending angle of each tooth of the sawteeth trench being selected from one of two difference values. Each sawteeth trench has eight teeth, four at the right side and four at the left side. Eight bending angles of eight teeth of one trench are selected from two kinds of different angles which are alternatively arranged. The bearing is suitable for spindles of various rotation speeds so as to generate fluid dynamic pressure and the bearing is also suitable for various rotation speeds of spindles. | 09-27-2012 |
20130016931 | Fluid Bearings With Adjustable Frictional Load CharacteristicsAANM ROBERTS, JR.; Charles E.AACI HelotesAAST TXAACO USAAGP ROBERTS, JR.; Charles E. Helotes TX US - An aspect of the present disclosure relates to a fluid bearing and a method of adjusting the load carrying capacity of a fluid bearing. The fluid bearing may include a bore defined in the fluid bearing and a rotatable bearing including a rotatable bearing surface. Lubricating fluid in the bore may be contacted with at least a portion of the rotatable bearing surface, wherein an effective bearing surface area is provided where the lubricating fluid contacts the rotatable bearing surface. The effective bearing surface area may be altered by either increasing or reducing the area of the rotatable bearing surface which is contacted by the lubricating fluid. | 01-17-2013 |
20130051714 | HYDRODYNAMIC BEARING ASSEMBLY AND METHOD OF MANUFACTURING THE SAME - There are provided a hydrodynamic bearing assembly and a method of manufacturing the same. The hydrodynamic bearing assembly includes: a lubricating oil filled so as to form a liquid-vapor interface between stationary members and rotating members; and a lipophilic coating formed on the liquid-vapor interface of the lubricating oil so as to prevent lubricating oil leakage. Therefore, the lipophilic coating is formed on the interface of the lubricating oil and an oil repellent material is formed on a surface of at least one of the stationary members and the rotating members, whereby the scattering and the leakage of the lubricating oil may be effectively prevented. | 02-28-2013 |
20130058600 | PLASTIC CRITICAL TOLERANCE FIT COMPONENT - Accurately formed critical tolerance fit components are provided for fluid dynamic bearing motors, including disc drive memory systems. In an aspect, critical tolerance fit components are molded to a metal insert and include a portion of a hub, a disc seating surface, and a disc locating surface. The insert includes another portion of a hub, a sleeve, or a disc clamp retainer for a novel disc clamp. In an aspect, the plastic component is situated to cause the thermal expansion of the plastic to be restricted by the thermal expansion of a metal insert. Expensive machining of a stamped metal hub is minimized or eliminated by using the molded component portions. Strict component tolerances are provided as needed for perpendicularity relative to motor rotation for seating a disc with accurate flatness, a circumferential surface for centering the disc, and tight parallelism between a disc mounting surface and a center shaft. | 03-07-2013 |
20130071053 | Fluid dynamic bearing with non-linear damping - Thus, if a shock or other disturbance to a disc stack spindle bearing assembly occurs that tilts the bearing assembly, the resulting motion is both a tilting, and a motion which is axial. If a shock axially moves the hub assembly, only an axial motion occurs. Thus the system has a non-linear behavior. Pursuant to this invention, when a tilting disturbance occurs, and some of it is dissipated in a net axial movement at a different frequency, energy is subtracted out of the system with motion that is not linearly related to the disturbance was that created it. | 03-21-2013 |
20130101243 | FLUID DYNAMIC BEARINGS - A fluid dynamic bearing is disclosed. A shaft is fit in a sleeve and rotates with respect thereto. A lubricant is filled between the shaft and the sleeve. At least one elliptical groove is formed on either the shaft or the sleeve and between the shaft and the sleeve. At least one non-elliptical groove connects to the elliptical groove. When the shaft rotates with respect to the sleeve, the lubricant is filled in the elliptical and non-elliptical grooves. | 04-25-2013 |
20130114919 | Fluid Bearings With Adjustable Frictional Load Characteristics - An aspect of the present disclosure relates to a fluid bearing having an adjustable effective surface area and a method of adjusting the load carrying capacity of a fluid bearing. The fluid bearing may include a bore defining a central longitudinal axis and lubricating fluid provided within the bore. The fluid bearing may also include a bearing including a bearing surface, wherein at least a portion of the bearing is positioned within the bore. An adjustable effective bearing surface area may also be provided. The method includes adjusting effective bearing surface area of the bearing. | 05-09-2013 |
20130163900 | DEBRIS RESISTANT THRUST BEARING ASSEMBLY FOR HIGH SPEED HYDRAULIC CENTRIFUGAL TURBINES AND PUMPS - A rotating assembly adapted for use in turbines and pumps is provided. The rotating assembly includes a shroud that rotates around a central axis and a disk seated in a recess in the shroud so that the disk rotates with the shroud, the disk being oriented perpendicular to the central axis. The rotating assembly also includes a stationary element in which at least one surface of the disk contacts a fluid so that when the fluid flows under pressure, the surface of the disk resists the generation of drag between the surface and the stationary element of the rotating assembly. A shroud is provided that includes a circular recess with a cavity on an outer perimeter extending away from the fixed assembly. A method of manufacturing a rotating assembly is provided. | 06-27-2013 |
20130195387 | STEPPED BEARING - A bearing assembly having a cylindrical outer bearing shell. The outer bearing shell including a first annular outer land, a second annular outer land, and a recess therebetween. The outer bearing shell further including a first positioning bore having a first bore diameter and a second positioning bore having a second bore diameter. The second bore diameter may be smaller than the first bore diameter. A diameter of the first annular outer land may be larger than a diameter of the second annular outer land. | 08-01-2013 |
20130216166 | ROTATING DEVICE - The rotating device includes a fixing body having a shaft and a shaft holder fixing the shaft, a rotating body having a shaft encircling member with a cylinder part encircling a shaft and a disk part, and a middle encircling member encircling the cylinder part and facing the disk part via a clearance in the direction of a rotational axis, a radial dynamic pressure generating groove disposed in either one of a surface of the cylinder part and a surface of the shaft facing with each other in the radial direction, a thrust dynamic pressure generating groove disposed in either one of a surface of the disk part and a surface of the shaft holder facing with each other in the rotational axis direction, and a lubricant continuously present from a first air-liquid interface to a second air-liquid interface between the rotating body and the fixing body. | 08-22-2013 |
20130251292 | BEARING DEVICE, METHOD OF MANUFACTURING BEARING DEVICE AND BEARING ASSEMBLY HAVING THE BEARING DEVICE - A bearing device includes a body, a circular cover, and a through hole commonly defined through both the body and the cover. The body is an injection molded piece made from metal powder and molten binder. The cover is an injection molded piece made from metal powder and molten binder. Two passages are defined between the body and the cover, and each passage communicates the through hole with an exterior of the bearing device, whereby lubricant can flow from the through hole to the passages. A bearing assembly having the bearing device is also provided, and a method of manufacturing the bearing device is further provided. | 09-26-2013 |
20140003747 | METHOD FOR MOUNTING A HYDRODYNAMIC SLIDING BEARING AND HYDRODYNAMIC SLIDING BEARING, IN PARTICULAR OF A MAGNETIC COUPLING PUMP | 01-02-2014 |
20140112604 | ADHESIVE HEIGHT SETTING - Methods for adhering parts together using part gap spacers are provided herein. Part gap spacers are formed in a selected pattern and a selected height on a surface of at least one surface of two parts to be oppositely disposed. When disposed opposite each other, at least some of the part gap spacers contact the opposite surface, and establish a standoff distance that is generally uniform, and thereby creating voids. Adhesive is disposed in at least some of the voids to adhere the part surfaces to each other. Further methods comprise forming part gap spacers on multiple sides of a third part to be disposed intermediate two surfaces. The part gap spacers can be formed in a variety of shapes, including bumps, tapers, ribs, and flange edges. | 04-24-2014 |
20140199005 | HYDROSTATIC GAS BEARING AND METHOD OF MANUFACTURING THE SAME - Including a synthetic resin-made bearing base | 07-17-2014 |
20140212079 | DISK DRIVE UNIT - A disk drive unit includes a rotor including a disk setting part on which a disk is set, a bearing unit configured to rotatably support the rotor, wherein the bearing unit includes a shaft member and a bearing member surrounding the shaft member, and a lubricant provided in a gap between the shaft member and the bearing member, a fixed body configured to support the bearing unit, and a capturing body, provided in a space communicating from a gas-liquid interface of the lubricant to a disk accommodating space in which the disk is accommodated, configured to capture the lubricant vaporizing from the gas-liquid interface. | 07-31-2014 |
20140355913 | METHOD FOR CONTROLLING A WIND TURBINE AND WIND TURBINE - A wind turbine and method for controlling a wind turbine with a plain/sliding bearing and bearing lubrication means is disclosed. The method comprising the steps of
| 12-04-2014 |
20140369630 | FLUID DYNAMIC BEARING RESERVOIR - Disclosed herein is an apparatus that includes a fluid dynamic bearing defined in a gap between an inner component and an outer component. In some instances, the inner component and the outer component are configured for relative rotation. In some instances, the apparatus further includes a fluid reservoir configured to supply a fluid to the fluid dynamic bearing and the fluid reservoir is defined by shearless surfaces. | 12-18-2014 |
20150023620 | HOOP FOR A HYDROSTATIC OR HYDRODYNAMIC BEARING, METHOD FOR MOUNTING SUCH A HOOP ON A SHAFT, AND ASSEMBLY FORMED BY SUCH A HOOP AND A SHAFT - The invention relates to a hoop including a cylinder which, so that it can be mounted around a shaft, is formed by multiple parts that are assembled together using assembly means that can produce an assembly without deformation of an external surface of the cylinder. A ring, of which an external surface forms the internal surface of the bearing and which, so that it can be secured to the external wall of the cylinder, is formed by multiple elements that are secured to the cylinder by securing means that can maintain a machining tolerance of the external surface of the ring. | 01-22-2015 |
20150030268 | SLEEVE, FLUID DYNAMIC PRESSURE BEARING INCLUDING THE SLEEVE, SPINDLE MOTOR INCLUDING THE FLUID DYNAMIC PRESSURE BEARING AND ELECTRONIC EQUIPMENT INCLUDING THE SPINDLE MOTOR - A porous oil-impregnated sleeve is used for a fluid dynamic pressure bearing. The sleeve includes an inner surface, a first axial end face, a first recessed portion, and a first dynamic pressure generating groove. The first recessed portion is positioned on the other side of a line segment, which connects one-side end portion of the inner surface with an inner end portion of the first axial end face, in a cross-section including the central axis. A bottom portion of the first recessed portion, which has the longest distance between itself and the line segment, is positioned closer to the other side than a bottom portion of the first dynamic pressure generating groove in the axial direction. | 01-29-2015 |
20150049967 | SYSTEMS AND METHODS FOR PROTECTING A TURBOCHARGER ALUMINUM BEARING HOUSING - In an aluminum turbocharger bearing housing, there is a potential for wear of the bearing housing at the interface with the turbine housing and/or the bearing system. One area of potential concern is the interface between the flange of the bearing housing and an abutment of the turbine housing. With a protective element at the interface, the potential for wear, and thus misalignment of the rotating assembly with the housings in which they operate can be mitigated. The protective element can be a cap for the bearing housing flange or a heat shield adapted to cover certain faces of the bearing housing flange. The protective element can be a sleeve provided within a bore in the bearing housing. The protective element can be made of a material with a higher heat resistance and/or a higher wear resistance than the aluminum bearing housing. | 02-19-2015 |