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 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 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 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 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 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.

Abstract: Alloys obtained by adding 0.01-3% by weight of at least one alloying element selected from the group consisting of Mn, V, Cr, Ti, Mg and Ni to slide bearing alloys of the Al-Sn-Pb-Cu system of the prior art. By adding at least one selectively added alloying element, it is possible to markedly improve the wear resistance and anti-seizure property of the bearing alloys to thereby satisfy the requirements of coping with an increase in the speed and load of internal combustion engines.

Abstract: A pad type journal bearing device includes a plurality of bearing pads disposed in circumferentially spaced relationship to one another within a casing and swingable about axes parallel to an axis of a rotating shaft. In addition, a resilient return member is provided within the casing for biasing the bearing pads in a manner to maintain a constant clearance between the rotating shaft and the bearing pads.

Abstract: A composite material for a sliding member has a back metal layer and a graphite-containing phosphor bronze sintered layer bonded to the back metal layer. The graphite-containing phosphor bronze sintered layer consists essentially of 0.03 to 1 wt % phosphorus, 7.5 to 16 wt % tin, 1 to 8 wt % graphite and the balance copper, and is constituted by phosphor bronze powder passing through a 200-mesh screen and a graphite powder passing through a 350-mesh screen. Also disclosed is a method of manufacturing the above-mentioned composite material for a sliding member.

Abstract: A method for measuring an adhesive strength of a multi-layer material having at least two layers, such as a plain bearing, which method includes the steps of placing a mold on one surface of the multi-layer material, casting a brazing metal into the mold to form and secure a resulting cast structure to the one surface of the multi-layer material such that the cast structure includes a first column portion connected to and extending substantially upright from the one surface of the multi-layer, an intermediate portion extending and diverging in diameter from the upper end of the first column portion and a second column portion extending from the upper end of the intermediate portion, causing the opposite chucks of a tension tester to grasp the second column portion and the multi-layer material or a holder connected to the multi-layer material, respectively, and applying a tensile force to the respective layers of the multi-layer material in a direction transverse to the one surface of said multi-layer material

Abstract: A connecting rod of a radial piston motor comprising a spherical portion, a rod portion and a pad and a method of producing same, wherein the pad is formed separately from the spherical portion and the rod portion beforehand, and interfitting portions are formed in the rod portion and the pad. The rod portion and the pad are connected to each other through the interfitting portions to form therebetween a joint which is welded, to produce the desired connecting rod of a radial piston motor. The provision of the interfitting portions enables the rod portion and the pad to be positioned with a high degree of precision.

Abstract: A multi-layer bearing including a metal backing layer and a porous material layer lined with the metal backing layer and impregnated in its interior and coated on its surface with a composition to increase the anti-cavitation, wear resistance and low friction characteristics of the multi-layer bearing. The composition contains, by volume, 0.1-50% tetrafluoroethylene-perfluoroalkylvinyl ether copolymer resin and the balance essentially polytetrafluoroethylene.

Abstract: Aluminum base bearing alloys of increased resistance to fatigue and/or anti-seizure property suitable for use with internal combustion engines. One of the aluminum bearing alloys of this kind is an alloy of the Al-Pb-Sn-Cu-Si system having added thereto at least one element selected from the group consisting of Ni, Mn, Cr, V, Mg, Ti, Zn, Co and Zr, and the other aluminum bearing alloy of an improved type is an alloy of the aforesaid Al-Pb-Sn-Cu-Si- (added further with at least one of Ni, Mn, Cr, V, Ti, Zn, Co, Zr) and further added thereto at least one element selected from the group consisting of Sb, Bi, Cd and In.

Abstract: A connecting rod of a radial piston motor comprising a spherical portion, a rod portion and a pad and a method of producing same, wherein the pad is formed separately from the spherical portion and the rod portion beforehand, and interfitting portions are formed in the rod portion and the pad. The rod portion and the pad are connected to each other through the interfitting portions to form therebetween a joint which is welded, to produce the desired connecting rod of a radial piston motor. The provision of the interfitting portions enables the rod portion and the pad to be positioned with a high degree of precision.

Abstract: A steel strip having distributed thereon powder containing aluminum as its main ingredient is cooled to a temperature range of less than 15.degree. C. below room temperature. The cooled material is immediately subjected to cold rolling and then to sintering, to produce multilayer sliding material. By cooling the steel strip and the powder distributed thereon together to a temperature range of less than 15.degree. C. below room temperature, occurrence of seizure between the powder and rolls of a rolling mill can be avoided.

Abstract: Bearing material including aluminum as its main ingredient and at least one lubricant additive, produced by compacting a powder material including aluminum as its main ingredient and at least one lubricant additive into a desired shape, subjecting the compacted and shaped powder material to heat treatment, extruding the heat-treated material and then subjecting the extruded material to heat treatment.The bearing material thus formed has a structure in which the lubricant additives are uniformly distributed as fine particles of small size, and also has a high percentage of elongation.

Abstract: A porous metal or alloy layer is formed by sintering or the like on a metal backing formed of steel, for example. Copper or a copper-base alloy is generally used for forming the porous metal or alloy layer. The porous metal or alloy layer having the metal backing is impregnated with a mixture comprising 1-25% by volume of lead fluoride, 1-30% by volume of one or both of lead and a lead-tin alloy consisting of 3-30% by weight of tin and the remainder being lead, and the remainder essentially polytetrafluoroethylene, wherein the lead fluoride and one or both of the lead-tin alloy and lead being 2-25% by volume in total, thereby a bearing material of this invention is provided. Depending on the use to which the bearing material is put, at least one additive selected from the group consisting of molybdenum, tungsten disulfide, cadmium oxide, aluminum oxide, calcium fluoride, lithium fluoride, graphite, lead iodide, glass fibers, carbon fibers and a phosphate may be contained in 0.

Abstract: A composite bearing material has a porous metallic layer integrally formed on the surface of a metallic backing, the pores and surfaces of the porous metallic layer being impregnated with a mixed bearing material of 0.1-15% fibrous material having good affinity for oil, 1-15% lubricating oil and the remainder synthetic resin. This composite bearing material is improved in its bearing properties such as load carrying capacity, wear resistance, non-stick properties and dimensional stability.