Abstract: A quaternary overlay bearing alloy used as a surface layer of a sliding bearing consist by weight of Cu in an amount sufficient more than 3% to substantially improve seizure property not more than 6% of Cu, 1-10% of In, not less than 0.1 but less than 5% of Sn, and the balance lead and incidental impurities.

Abstract: Herein disclosed are an overlay alloy used for surface layer of a sliding material and consisting, by weight, of Cu within the range of 0.1 to 6%, In within the range of 1 to 10% and the balance Pb and incidental impurities, and a composite sliding material comprising an surface layer consisting of said overlay alloy. The overlay alloy can further include Sn not more than 8%.

Abstract: A bush bearing of male and female clinch type which has at least two joints.

Abstract: A wrapped bush having its ends joined at a joint. First and second joint portions are formed in the corresponding end portions of the bush that are to be joined at the joint, and they each have at least one pair consisting of a recess and a projection. The first and second joint portions are of the same configuration and of the same size but are formed at positions shifted along the corresponding end portions. Further, the first and second joint portions are arranged in such a manner that, when the end portions of the bush are joined, one joint portion formed in one end portion is supplementary with the other joint portion formed in the other end portion.

Abstract: Herein disclosed is a method of making an overlay alloy used for a surface layer of a sliding material and consisting, by weight, of Cu within the range of 0.1 to 6%, In within the range of 1 to 10% and the balance Pb and incidental impurities, and a composite sliding material comprising a surface layer consisting of said overlay alloy. The overlay alloy can further include Sn not more than 8%. The method includes electroplating a layer of Pb-Cu alloy, electroplating indium and, optionally, tin and heating to diffuse the constituents of the plated layers.

Abstract: A method of producing a flanged bush comprising the steps of: preparing a die having a through bore of a configuration conforming with the outer configuration of the flanged bush to be produced, and a flange-forming punch having a large-diameter portion of a diameter equal to the outside diameter of the flanged bush and a small-diameter portion of a diameter equal to the inside diameter of the bore in the flanged bush to be produced; inserting, by a coining punch, a cylindrical stock axially into the bore in the die from one axial end of the latter; and driving the flange-forming punch into the bore in the die from the other axial end of the latter so as to press the inner end of the stock, thereby to form the flange.

Abstract: A thrust bearing which is formed by stamping a plate made of a bearing alloy material or a plate having a bearing alloy layer has an annular shape. The thrust bearing is disposed in a circumferential direction and has a plurality of recesses and projections deformed in the direction of the thickness of the bearing. The thrust bearing may have a positioning and retaining portion.

Abstract: An apparatus mechanically actuates GO ring gauges and NOGO ring gauges to check whether inner and outer diameters of hollow, cylindrical-shaped products such as bushes B/G are within fit tolerances, thus automatically distinguishing between acceptable and unacceptable products.

Abstract: A bearing unit of this invention includes, instead of a conventionally used bracket, a housing formed with an external thread and a bush press fitted in an inner bore of the housing.

Abstract: A slide rule for selecting bearing materials has a base plate, a fixed cursor having first, second and third portions spaced apart from one another and fixedly attached to the base plate, a first sliding ruler slidably mounted between the first and second portions of the fixed cursor, an indicator cursor having an indicator cursor line and fixed to the first sliding ruler, a second sliding ruler slidably mounted between the second and third portions of the fixed cursor, and a fixed ruler mounted on the opposite side to the second sliding ruler with the third portion of the fixed cursor interposed therebetween. The fixed cursor has a fixed cursor line in the vicinity of its left end. The first sliding ruler has logarithmic graduations which indicate levels of bearing surface pressure. The second sliding ruler has logarithmic graduations which indicate sliding speeds, PV values and periods of lifetime of various bearing materials.

Abstract: In a method of producing a composite material for a sliding member having a sliding portion and a backing material which supports the sliding portion, the method comprises the steps of: disposing a powder or a sheet material for the sliding portion on the backing material; irradiating the powder or sheet material with laser beam or electron beam; melting or partially melting the beam-irradiated powder or sheet material; and quenching and solidifying the melted or partially melted portion, whereby the particles of the powder are integrated with one another and the powder in contact with the backing material are bonded thereto, or whereby the sheet material in contact wiht the backing material are bonded thereto.

Abstract: A method of producing a composite sliding material having a sliding portion with a sliding surface is disclosed. A base material billet for the sliding portion is prepared and then at least half of the outer peripheral surface of the base material billet is covered by a protecting material while leaving the surface of the billet, which is to become the sliding surface of the finished composite sliding material, as an exposed portion which is not covered by the protecting member. The base material billet and the protecting material are then extruded simultaneously. The composite sliding material may be made thinner by means of rolling as occasion demands. It is also possible to subject the sliding material to heat treatment before and/or after extrusion, if necessary. A composite sliding material may be produced by pressure-bonding a hard support material such as steel to the protecting material which is used in this case as an adhesive layer.

Abstract: An Al alloy suitable for use as the material of a sliding part such as those in automotive internal combustion engine. The alloy consists essentially of: more than 11 weight % but up to 18 weight % of Si, more than 3 weight % but up to 10 weight % of Sn, not smaller than 0.2 weight % but less than 2 weight % of Cu, and the balance substantially Al. Pb may be added to improve the anti-seizure property and the compatibility. One, two or more elements selected from a group consisting of Na, Sr and P may be added to make fine the Si grains. The alloy can further contain also at least one element selected from the group consisting of Mn, V, Cr, Ti, Mg and Fe in order to further improve the mechanical properties, particularly the strength. This alloy exhibits superior anti-seizure property and high wear resistance and, hence, can be used suitably as the material of various sliding parts.

Abstract: A composition for the sliding member consisting of: at least one resin of the amount 0.1 to 50 volume % selected from group (A) consisting of tetrafluoroethylene-perfluoroalkylvinyl ether copolymer resin, tetrafluoroethylene-hexafluoropropylene copolymer resin and fluoroethylene propylene ether resin; at least one resin of the amount 0.1 to 50 volume % selected from group (B) consisting of oxybenzoylpolyester resin, phenylene sulfide polymers resin and thermosetting resins; and the balance substantially tetrafluoroethylene resin, the total amount of the constituents other than the tetrafluoroethylene resin being 0.3 to 70 volume %.

Abstract: A composite sliding structure which can be applied to automotive shock absorbers or sliding portions of hydraulic apparatus or pneumatic apparatus and comprises a deformable member in the form of piston, bush, or spherical seat, and a sliding member acting as a self-lubricating sliding member, which is partially deformed plastically and united with the deformable member into one body, thereby to prevent noise, vibration, an oil or gas leak.

Abstract: A method of producing a sliding composite material. The method comprises the step of: forming an adhesive layer bonded to the surface of a metal strip by sintering a powder for the adhesive layer which contains no solid lubricant and which is disposed onto the surface of the metal strip; forming a surface layer by sintering another powder for the surface layer which contains a solid lubricant and which is disposed onto the sintered adhesive layer; and rolling the resulting layers and the metal strip to obtain the composite material.

Abstract: A device for measuring interference and wall thickness of a half cylindrical plain bearing includes a bearing support block provided with a substantially semi-cylindrical shaped recess for receiving the plain bearing, a pressing mechanism for closely pressing the plain bearing against the recess, a substantially semi-columnar shaped wall thickness measuring head having a smaller outer diameter than the inner diameter of the plain bearing when it closely contacts with the recess, and a positioning mechanism for establishing a predetermined positional relationship between the recess and the wall thickness measuring head upon measurement. The bearing support block carries a detector or detectors for measuring interference of the half cylindrical plain bearing, and the wall thickness measuring head incorporates measuring instruments such as air micrometers.

Abstract: A wrapped bush adapted to be force fitted into an axial opening of a bearing housing is formed at its outer peripheral surface with one or more oil grooves. The oil groove or grooves are formed by press work such as embossing to extend obliquely relative to a line parallel to the axis of the wrapped bush such that they are in parallel to or symmetrical with each other with respect to the line. Upon wrapping a metal strip into the wrapped bush, the oil groove or grooves neither lessen the effect due to interference on the wrapped bush nor produce any crease or crack at or near the oil grooves, thereby attaining out of roundness to a desired extent.

Abstract: A sliding and bearing material having a superior wear resisting property, consisting of: a backing metal; an intermediate layer joined to the backing metal; a porous metallic layer joined to the intermediate layer; and a substance with which the porous layer is impregnated and/or coated, the substance being one of the following mixtures (A), (B) and (C):(A) a first mixture consisting essentially of 0.1 to 50 vol % of at least one composition selected from a group consisting of ETFE, PVDF, PCTFE and EPE, and the balance substantially PTFE(B) a second mixture consisting essentially of 0.1 to 50 vol % in total of at least two compositions selected from a group consisting of FEP, PFA, ETFE, PVDF, PCTFE and EPE, and the balance substantially PTFE(C) a third mixture consisting essentially of 0.1 to 50 vol % of at least one composition selected from a group consisting of FEP, PFA, ETFE, PVDF, PCTFE and EPE; 0.

Abstract: A composition for sliding parts, comprising 0.1 to 50 vol % in total of at least one selected from the group (A) consisting of FEP, PFA, ETFE, PVDF, PCTFE and EPE; 0.1 to 35 vol % of compound metal oxide; and the balance PTFE, the total content of components other than PTFE ranging between 0.2 and 70 vol %. Such composition may further contain at least one of metal oxide, metallic lubricant, metal sulfide, metal fluoride, carbonic solid lubricant, fibrous material, ceramics.