Abstract: A method for re-shaping portions of a coating applied to the surface of a component using a tool including a collet having a plurality of flexible arms with a wheel rotatably supported on each of the flexable arms, a nut and a sleeve. The tool is initially installed by disposing the collet caxially about the component. Then, the sleeve is disposed co-axially about the collet. Next, the nut is threaded onto a threaded first end of the collet. As the nut is threaded onto the collet, it engages and moves the sleeve axially toward the arms of the collet thereby causing the arms to be compressed radially inwardly such that outer circumferential surfaces of the wheels engage and re-shape the coating on the outer surface of the component. The tool, as a whole, can then be moved axially back and forth along the surface of the component to re-shape the entire length of the coating thereon.

Abstract: A method of producing a workpiece forming at least one bearing eye is described, which is divided in the region of the bearing eye along an intended fracture point through a fracture separation, the bearing eye being coated with an anti-friction coating after assembly of the parts. In order to achieve a high load capacity, it is suggested that the bearing eye be processed for a precise fit after assembly of the parts obtained through the fracture separation of the workpiece, before the anti-friction coating is applied to the processed bearing eye surface in a thickness corresponding to the final dimensions.

Abstract: A method of producing a workpiece (1) having at least one bearing eye (2) is described, the bearing eye (2) being coated with an anti-friction coating (4), which forms a running surface deviating from a circular cylinder. In order to provide advantageous production conditions, it is suggested that the bearing eye (2) be processed for a precise fit to a circular cylinder, before the anti-friction coating (4) is galvanically deposited on the processed bearing eye surface (3) to form the running surface in a varying thickness which corresponds to the final dimensions.

Abstract: A method of producing a workpiece (1) having at least one bearing eye (2) is described, an anti-friction coating (4) being galvanically deposited onto the bearing eye surface (3) after processing for a precise fit, which forms a running surface (5) having profiling in the form of groove-like recesses (6), which are distributed over the axial length and run around the circumference. In order to provide simple method conditions, it is suggested that the bearing eye surface (3) be processed for a precise fit to a circular cylinder before the anti-friction coating (4) is galvanically deposited onto the processed bearing eye surface (3) to form the running surface (5) in a varying thickness which corresponds to the final dimensions of the profiled running surface (5).

Abstract: A method of producing a workpiece having at least one bearing eye is described, the bearing eye being coated with an anti-friction coating made of an alloy of a harder alloy component and a softer alloy component. In order to achieve an advantageous load capacity, it is suggested that the bearing eye be processed for a precise fit to a circular cylinder before the anti-friction coating is applied to the processed bearing eye surface in a thickness corresponding to the final dimensions, the proportion of the softer alloy component in the deposited alloy being increased with increasing coating thickness.

Abstract: A method of manufacturing sliding bearings of the type in which a sliding guide surface is formed by using a resin liner, including fixing a thermosetting resin, which constitutes the resin liner, on the whole or a part of a sliding guide surface of a first member by an injection molding operation using the first member as a core, thereafter molding a second member, which covers a sliding guide surface of the first member, by a metal molding operation with the resin liner-fixed first member placed firmly as a core in a metal mold, and thermally curing the resin liner with the heat working on the sliding surface of the first member during the molding of this second member.

Abstract: Prior to forming a thermal spray coating layer (28) on an end face (23B′) of a structural base material (23′) to be shaped into a boss, firstly an inner masking member (32) is fitted in an original hole (23A′) of the structural base material (23′) and then an outer masking member (33) is fitted on outer peripheral side of the structural base material (23′). In the next place, by the use of a hard material, a thermal spray coating layer (28) is formed on an annular coating area (23B1′) which is exposed between the inner and outer masking members (32) and (33). Surface areas on the end face (23B′) of the structural base material (23′), corresponding to an allowance range of a machining operation by which the original hole (23A′) is ultimately shaped into a joint pin hole of a specified diameter, are left as a non-coating area (23B2′) free of the thermal spray coating layer (28).

Abstract: A bi-metal aluminum bearing includes an aluminum-based bearing layer, a steel backing, and an intermediate aluminum-based layer that has a thickness of from 60 to 120 micrometers positioned between the aluminum-based bearing layer and the steel backing. The intermediate layer has a yield strength that is less than that of the aluminum-based bearing layer and is preferably of pure aluminum. The aluminum-based bearing layer has a fine microstructure which imparts a very high level of conformability while retaining good fatigue strength. The aluminum bearing layer generally includes 4% to 20% by weight lead or tin, up to 26% by weight silicon and up to 2% by weight of any of the elements magnesium, manganese, nickel, zirconium, zinc, copper, or chromium with the remainder of the bearing layer being aluminum.

Abstract: An object of this invention is to provide a connecting rod in which a pair of ball-shanks are connected to a rod main body such that they are axially perpendicular to each other, having a sufficient strength and which can be produced easily and at low cost, and a manufacturing method thereof. The connecting rod of this invention to achieve such an object comprises first and second ball-shanks and a rod main body to which the first and second ball-shanks are connected freely swingably and rotatably. The first ball-shank is connected to the rod main body such that the shank portion is perpendicular thereto, while the second ball-shank is connected to the rod main body such that the shank is in parallel thereto. Further, the rod main body is die cast with a ball portion of each ball-shank inserted as a core.

Abstract: A bi-metal aluminum includes bearing an aluminum-based bearing layer, a steel backing, and an intermediate aluminum-based layer that has a thickness of from 60 to 120 micrometers positioned between the aluminum-based bearing layer and the steel backing. The intermediate layer has a yield strength that is less than that of the aluminum-based bearing layer. The aluminum-based bearing layer has a fine microstructure which imparts a very high fatigue strength. The aluminum bearing layer generally includes 4% to 15% by weight lead or tin, up to 26% by weight silicon and up to 2% by weight of any of the elements magnesium, manganese, nickel, zirconium, zinc, copper, or chromium with the remainder of the bearing layer being aluminum.

Abstract: A method of manufacturing a shoe according to the present invention comprises a step of cutting a columnar raw material 1 to a given length to provide a disc-shaped raw material 2, a step of forming on one end face of the disc-shaped raw material a spherical sliding surface 10 which is to be disposed in sliding contact with a spherical surface on a piston, and a step of forming a thermal sprayed layer 6 on the other end face of the disc-shaped raw material by a rapid gas H.V.O.F. spraying process, the thermal sprayed layer serving as a flat plate-shaped sliding surface 9 which is to be disposed in sliding contact with a swash plate. A shoe which is provided with the thermal sprayed layer 6 exhibits an increased seizure resistance in comparison to a conventional shoe which is formed with a sintered layer, and can be manufactured inexpensively.

Abstract: The present invention provides a rolling bearing in which an oxide layer of an iron/chromium oxide series is formed at a thickness of from 1 to 1000 nm to at least one of raceway surfaces of bearing rings or rolling contact surfaces of rolling elements and a manufacturing method thereof. The oxide layer can inhibit hydrogen formed by decomposition of water incorporated in the lubricants from intruding into the matrix of the bearing members, thereby preventing early peeling for the raceway surfaces of the bearing rings or the rolling contact surfaces of the rolling elements and, thus, greatly improving the rolling life. The oxide layer can be formed simply by merely tempering the bearing member and then applying a re-heating treatment in air at a temperature lower than the tempering temperature.

Abstract: In the method for producing a connecting rod eye having a large eye with a cap described in the specification, a microporous aluminum bronze plasma-coating is applied to the large eye and the connecting rod eye is then opened by removing the cap, thus breaking the plasma coating. The cap is subsequently remounted and the bearing layer finished by fine spindling which produces micropores in the bearing surface for oil retention. Circumferential grooves are also provided in the bearing surface to improve oil retention.

Abstract: Prior to forming a thermal spray coating layer (28) on an end face (23B′) of a structural base material (23′) to be shaped into a boss, firstly an inner masking member (32) is fitted in an original hole (23A′) of the structural base material (23′) and then an outer masking member (33) is fitted on outer peripheral side of the structural base material (23′). In the next place, by the use of a hard material, a thermal spray coating layer (28) is formed on an annular coating area (23B1′) which is exposed between the inner and outer masking members (32) and (33). Surface areas on the end face (23B′) of the structural base material (23′), corresponding to an allowance range of a machining operation by which the original hole (23A′) is ultimately shaped into a joint pin hole of a specified diameter, are left as a non-coating area (23B2′) free of the thermal spray coating layer (28).

Abstract: A hydrodynamic bearing apparatus comprises at least a pair of hydrodynamic bearing surfaces that face each other in the radial direction which are formed with an outer circumferential surface of a shaft unit and an inner circumferential surface of a shaft fitting unit relatively and rotatably attached to the shaft unit. Hydrodynamic pressure generating grooves of a predetermined shape are produced on either one of the hydrodynamic bearing surfaces of the shaft unit and shaft fitting unit. A lubricant coating is formed by electrodeposition on either of the hydrodynamic bearing surfaces of the shaft unit and shaft fitting unit. A method for manufacturing a hydrodynamic bearing is also disclosed.

Abstract: A lead-free multilayer material for plain bearings and a process for the production of corresponding bearing shells for improved emergency running and mechanical load-carrying capacity characteristics. The multilayer bearing material comprises a lead-free copper alloy having a copper content ranging from 50 to 95 wt. %, and an overlay formed of a lead-free tin and copper having a tin content ranging from 70 to 97 wt. % and a copper content ranging from 3 to 20 wt. %.

Abstract: A method for producing flanged bearings is described in which the blank (10) is punched out, forming at least two extension and holding portions (9, 9′), by means of which the blank (10) remains connected with the strip or the neighbouring blank during shaping. The flanged bearing is separated from the extension and holding portions (9, 9′) once shaping is complete. A device for shaping blanks is also described, which comprises a die and a die barrel, as well as on each side a slide displaceable for the purpose of forming the flange.

Abstract: A plain bearing overlay (3) of which exhibits properties which are markedly improved with regard to wear resistance in comparison with overlays applied by electroplating and conventional electron beam vapor deposition methods. The surface of the overlay (3) comprises round raised portions (4) and depressed portions (6), wherein, in relation to the horizontal section plane (7), the raised portions (4) cover a proportion of the surface area amounting to 30% to 50%, based on the entire surface area of the plain bearing, the section plane (7) being at a height at which the total proportion of the surface area consisting of the raised portions (4), and obtained in vertical section, is equal to the total corresponding proportion consisting of the depressed portions (6). The round raised portions exhibit a diameter D of 3 to 8 &mgr;m, in plan view, wherein, in the case of raised portions (4) and depressed portions (6) which in plan view are not circular, this value relates to the maximum diameter.

Abstract: A process for forming a lubricating film on a direct acting bearing includes the steps of forming a liquid film on at least the rolling and sliding portions of the direct acting bearing by using a solution prepared by diluting a fluorine-containing polymer in a solvent. The liquid film is then cured to form a solid film of a fluorine-containing polyurethane high molecular compound on the direct acting bearing.

Abstract: A bimetallic strip for a sliding bearing having a sliding strip of an aluminum alloy which is adhered to a steel supporting strip and method of manufacture. The composition of the sliding strip is from 3 to 30% of tin; from 1 to 6% of silicon and the remainder being of aluminum and impurities, and the sliding strip has at least 95% of the silicon hard particles smaller than 3.5 microns and an aluminum grain average size of about 6 microns. The sliding strip is produced by roll casting the alloy and attaching the sliding strip to the steel supporting strip to form the bimetallic strip which is heat treated between 200° and 380° C. to obtain a metallurgical bonding between the strips; subjecting the bimetallic strip to a solubilizing process of the intermetallic compounds of the aluminum alloy by heating at 380-500° C., followed by cooling; and subjecting the bimetallic strip to a precipitation treatment at a temperature from 150° to 250° C.

Abstract: A cost-effective process for providing a copper-based alloy casting, which has superior wear characteristics, to a cylinder block is described. The process includes heating the copper-based alloy to a molten state for immersing the cylinder block within such, while promoting the entrained gas within the copper-based alloy to migrate in a given direction and terminate in a specified portion of the copper-based alloy to effectively control porosity. In one form, the process further includes cooling the immersed cylinder block in the given direction to effectively reduce microshrinkage of the copper-based alloy.