Patent application number | Description | Published |
20090034888 | HYDRODYNAMIC BEARING UNIT - A housing for a hydrodynamic bearing unit of this type is formed from a resin material having high oil resistance and low outgassing property to ensure the cleanliness of the bearing unit. An ester-based lubricating oil is used as a lubricating oil filled inside the hydrodynamic bearing unit | 02-05-2009 |
20090129710 | FLUID DYNAMIC BEARING DEVICE - The present invention aims to achieve a reduction in cost for a fluid dynamic bearing device. The fluid dynamic bearing device supports a shaft member ( | 05-21-2009 |
20100194215 | FLUID DYNAMIC BEARING APPARATUS AND A MOTOR USING THE SAME - Assembly precision in a motor is improved and greater cost reduction is achieved. | 08-05-2010 |
20120170880 | FLUID DYNAMIC BEARING DEVICE - A density of a bearing sleeve made of a sintered metal is set within a range of from 80% to 95% with respect to a true density, and a Young's modulus of the bearing sleeve is set to be equal to or more than 70 GPa. When the density of the bearing sleeve is increased and also the Young's modulus thereof is set to be equal to or more than 70 GPa in this manner, dimensional variation of an inner peripheral surface of the bearing sleeve can be suppressed to be equal to or less than 0.5 μm when a shaft member having an outer diameter of from 2 mm to 4 mm is to be supported. | 07-05-2012 |
20120175984 | DYNAMIC BEARING DEVICE - Disclosed is a dynamic bearing device which allows production of a smaller housing at low cost and which suppresses ion elution from the resin portion to thereby maintain cleanliness in the dynamic bearing device and exert a desired bearing performance. A dynamic bearing device | 07-12-2012 |
20120186983 | FLUID DYNAMIC BEARING DEVICE - It is an object of the present invention to provide a bearing member having a highly accurate dynamic pressure generating portion stably at low cost. Dynamic pressure grooves ( | 07-26-2012 |
20120230618 | FLUID DYNAMIC BEARING DEVICE - A weld line formed by injection molding of a sealing member is formed at a circumferential position out of deepest portions of axial grooves, which form thinned portions of the sealing member (optimally, in a region of a cylindrical surface between the axial grooves in a circumferential direction). Thus, the sealing member is prevented from being provided with parts having locally markedly low strength, and hence damage to be caused by press-fitting is prevented. | 09-13-2012 |
20120315169 | FLUID DYNAMIC BEARING DEVICE AND ASSEMBLY METHOD FOR SAME - Providing a fluid dynamic bearing device, wherein the outer member comprises a member formed by a pressing process on a plate member, the radial bearing surface and at least the one of the thrust bearing surfaces of the outer member being formed by the pressing process, and wherein at least a part of the inner member, which forms the radial bearing surface and the thrust bearing surfaces of the inner member, is made of a sintered metal. | 12-13-2012 |
20140050427 | FLUID DYNAMIC BEARING DEVICE - A fluid dynamic bearing device ( | 02-20-2014 |
20140145366 | FLUID DYNAMIC BEARING DEVICE - A weld line formed by injection molding of a sealing member is formed at a circumferential position out of deepest portions of axial grooves, which form thinned portions of the sealing member (optimally, in a region of a cylindrical surface between the axial grooves in a circumferential direction). Thus, the sealing member is prevented from being provided with parts having locally markedly low strength, and hence damage to be caused by press-fitting is prevented. | 05-29-2014 |