Patent application number | Description | Published |
20090092347 | FLUID DYNAMIC BEARING DEVICE - A fluid dynamic bearing device capable of exercising high bearing performance is provided at low cost. | 04-09-2009 |
20090136165 | FLUID DYNAMIC BEARING UNIT - A fluid dynamic bearing unit is provided which has a high load capacity against a moment load, whose bearing sleeves can be manufactured and fixed easily, and which can provide a required fixing power. The bearing sleeve is inserted into an inner periphery of a housing, and its bottom end is fixed to the top end of a spacer part with an adhesive. Another bearing sleeve is inserted into another part of the inner periphery of the housing, and its top end is fixed to the bottom end of the spacer part with an adhesive. | 05-28-2009 |
20090285514 | FLUID DYNAMIC BEARING DEVICE - Provided is a fluid dynamic bearing device which has excellent moment rigidity and an improved working efficiency in assembling and parts control, and in which a bearing sleeve can be easily manufactured. A plurality of bearing sleeves are axially disposed in the fluid dynamic bearing device. The bearing sleeves ( | 11-19-2009 |
20090324149 | FLUID DYNAMIC BEARING DEVICE - An outer peripheral surface ( | 12-31-2009 |
20100034493 | Fluid bearing device - Provided is a fluid bearing device in which run-out of another member fixed to a shaft member is suppressed. At one end of a shaft member ( | 02-11-2010 |
20100166344 | FLUID DYNAMIC BEARING DEVICE AND METHOD OF MANUFACTURING THE SAME - Provided is a fluid dynamic bearing device in which an assembly of a bearing sleeve to a housing is facilitated and which has excellent moment rigidity. A fluid dynamic bearing device ( | 07-01-2010 |
20100231074 | FLUID DYNAMIC BEARING DEVICE AND MANUFACTURING METHOD THEREFOR - To provide a fluid dynamic pressure bearing device that achieves high rigidity against moment without degradation in assembly precision and bearing performance, bearing sleeves are arranged in an axial direction and coaxiality of radial bearing surfaces formed on inner peripheral surfaces of the bearing sleeves is set to 3 μm or less. This secures width precision between the radial bearing gaps to prevent a degradation in bearing performance and a failure such as wear etc. caused by contact between a shaft member and the bearing sleeves. Further, a first radial bearing surface and a second radial bearing surface are provided on at least one sleeve, and this allows a sleeve assembly constructed from the bearing sleeves to be supported at least three positions in the axial direction in a process of assembling the sleeve assembly. As a result, assembly work can be carried out with two bearing sleeves prevented from being bent at a midway thereof, and highly accurate coaxiality between both the bearing sleeves is secured. | 09-16-2010 |
20110170813 | FLUID DYNAMIC BEARING DEVICE AND MANUFACTURING METHOD THEREFOR - To increase fixation strength of a bearing sleeve with respect to a bottomed cylindrical housing, a fluid dynamic bearing device ( | 07-14-2011 |
20150043844 | SINTERED METAL BEARING - Provided is a sintered metal bearing, which is formed of raw material powder containing copper-based powder and iron-based powder as main components, the sintered metal bearing including a radial bearing surface along an inner periphery thereof. The copper-based powder includes fine copper powder exhibiting a particle size distribution in which a ratio of particles with a diameter of less than 45 μm is 80 wt % or more, the fine copper powder occupying one-third or more of a whole of the copper-based powder in terms of a weight ratio. A compressed body formed by compressing the raw material powder is sintered at 900° C. or more to 1,000° C. or less. | 02-12-2015 |