摘要:
An inner peripheral surface and a lower end surface of a bearing sleeve made of a sintered metal are each formed into a smooth cylindrical surface or a flat surface that does not have a dynamic pressure generating portion. Thus, a step of forming the dynamic pressure generating portion can be omitted from a manufacturing step of the bearing sleeve, and cost of dies can be markedly reduced. Further, the inner peripheral surface of the bearing sleeve is formed into the smooth cylindrical surface, and hence a radial dynamic pressure generating portion is formed on an outer peripheral surface of a shaft member. However, the outer peripheral surface of the shaft portion is accessible to tools, and hence the radial dynamic pressure generating portion can be formed easily with high accuracy. As a result, accuracy of a radial bearing gap is enhanced so that a bearing rigidity is enhanced.
摘要:
The invention relates to a sliding bearing and to a method for producing a sliding bearing, having at least one groove formed on the sliding surface which extends at least partially in the axial direction of a mounted shaft, ends on at least one end before the edge of the bearing and is deeper than 80 μm and/or wider than 150 μm, so that dirt and/or particles can be embedded.
摘要:
The invention relates to a flanged bearing ring produced from a high carbon steel profile bar comprising at least one flash butt welded joint, where the bearing ring is provided with an inner peripheral surface and an outer peripheral surface and where one peripheral surface comprises a raceway for rolling elements, where the bearing ring further comprises a flange adapted for fixing the bearing ring to a mechanical member, where the flange protrudes from the bearing ring in a substantially radial direction. The invention further relates to a method for producing such a homogenous flanged bearing ring from a straight profile bar. The advantage of the invention is that a homogenous flanged bearing ring is obtained in a simple and cost-effective way.
摘要:
A three-layer composite self-lubricating sliding bearing with modified polyimide anti-wear layer, wherein a porous spherical bronze powder layer is sintered on a surface of a steel plate, characterized in that a self-lubricating sliding bearing sheet is formed by covering the porous spherical bronze powder layer with a modified polyimide anti-wear material layer, and then the self-lubricating sliding bearing sheet is manufactured into an article of sleeve-shaped sliding bearing or bearing bush or thrust washer or sliding-board or friction disc or ball seat structural part according to conventional processes. The process for manufacturing includes: preparation of a modified polyimide paste; sintering of spherical copper powder; preparation; coating; sintering of the modified polyimide; finish rolling; cutting and forming. The product possesses excellent performances of high stiffness, high strength, high-temperature resistance, and lead-free, and is especially applicable for the sliding bearings with heavy loading, variable loading and high PV value.
摘要:
The invention relates to a plain bearing composite material with a supporting layer made of a copper alloy, and with a lining applied to the bearing metal layer. The copper alloy can contain 0.5 5% by weight of nickel, 0.2 to 2.5% by weight of silicon and =0.1% by weight of lead. The lining can be a sputtered layer that is applied without an intermediate layer. The invention also relates to methods for producing this composite material.
摘要:
The invention relates to a method for the production of a flange sleeve especially for a sliding bearing. A strip of material is cut into lengths corresponding to the later periphery of the flange sleeve. The strip section thus arising is rolled to form a hollow cylindrical sleeve with an open butt joint and a collar is placed around one or two sides. The open butt joint is expanded in the region of the collar to form a V-shaped slit. One or several recesses are made in the region of the later open butt joint on one or two of the longitudinal edges of the strip section.
摘要:
The invention provides a bearing sleeve and method of forming a sleeve having at least one window whose edge boundary has a first apex region and a second apex region situated opposite one another in the sleeve longitudinal direction. In order to prevent chip formation when pressing the bearing sleeve into a bearing housing, it is provided that, in at least one apex region, the edge boundary forms an angle α≠90° with the sleeve longitudinal direction of the bearing sleeve.
摘要:
A spindle motor of small size, thin type, high reliability, and high performance suited to an information recording and reproducing apparatus is presented. Specifically, a rotary disk is composed by integrally forming a disk board, and a rotary shaft of spindle motor, and a bearing is composed by forming dynamic pressure generating grooves in the rotary shaft of the rotary disk. As a result, small size and thin structure are realized, surface deflection of the disk during rotation of the spindle motor, and its axial center deflection are substantially decreased, and moreover the recording density is enhanced, the number of constituent parts is curtailed, and the cost is saved.
摘要:
The invention relates to a method for the production of a flange sleeve (10) especially for a sliding bearing. A strip of material is cut into lengths corresponding to the later periphery of the flange sleeve. The strip section (14) thus arising is rolled to form a hollow cylindrical sleeve with an open butt joint (12) and a collar (20) is placed around one or two sides. The open butt joint is expanded in the region of the collar to form a V-shaped slit. One or several recesses (18a, 18b) are made in the region of the later open butt joint (12) on one or two of the longitudinal edges (16) of the strip section.