Abstract: A contaminated surface polishing-washing detergent composition comprises a polishing media and a dispersion medium wherein at least a part of the polishing media is made of a fine powder of an RB ceramic and/or CRB ceramic. The composition is effective in polishing-washing the surfaces of a precision-worked base material, and after the polishing-washing, the particles of metal oxides and the particles of removed burrs and the cutting metal chips are simply separated from the composition by use of the difference in specific gravity to re-use it by recycling.

Abstract: A liquid cleanser comprises an aqueous medium, a surface active agent and a polishing material wherein the polishing material contains as at least one component thereof an RB ceramic and/or CRB ceramic powder.

Abstract: According to the invention, a self contained vibration resistant bearing is provided. The bearing is coated with a film formed from a rust preventive oil having an extreme-pressure additive content of 0.5 to 10% by weight. Desirably the extreme-pressure additive is an organometallic compound, an organofatty acid compound, organofatty acid derivative, an organophosphoric acid compound or a combination of two(2) or more of such compounds. When a rust preventive film that contains an extreme-pressure additive is formed all over bearing components during the assembling process, the bearing components are fully protected even from sudden vibrations from transportation.

Abstract: A low noise composition includes fine particles of RBC or CRBC dispersed in a synthetic resin. The composition can be formed into an article of manufacture prepared by molding the composition.

Abstract: A high speed rolling bearing having a long life, low rotation torque and small leakage amount of a grease, is provided. The high speed rolling bearing is made up of retainers disposed so as to surround respective rolling elements between an outer member and an inner member thereof, and the respective rolling elements roll against a first contact face which is a contact face thereof with the outer member as well as a second contact face which is a contact face thereof with the inner member. The retainers are made of a polyamide and retain a grease composition composed of a thickener and a base oil composed of a synthetic hydrocarbon oil having a kinematic viscosity at 40° C. in a range of 50 to 70 mm2/s and containing 3 to 6 mass % of hydrocarbon molecules containing 28 to 32 carbon atoms.

Abstract: The electrically motorized pump has a low energy loss because it uses of the shaft and the sleeve made from synthetic resin composition obtained by uniformly dispersing fine powder of RBC or CRBC in a resin. The typical process for the production of a synthetic resin composition for making the sleeve bearing for the pump for use in water includes kneading with a resin the fine powder of RBC or CRBC at a temperature in the neighborhood of the melting point of the resin, and thereby uniformly dispersing the fine powder of RBC or CRBC in the resin.

Abstract: A bearing for an electronically controlled throttle motor in an automobile filled with a grease composition with a kinetic viscosity between 40 and 150 mm2/sec (at 40° C.) containing (a) a straight-chain perfluoropolyether oil with a kinetic viscosity less than 25 mm2/sec (at 40° C.) expressed by the formula RfO(CF2O)p(C2F4O)q(C3F6O)rRf (where Rf is a perfluoro lower alkyl group, and p, q and r are integers whose total is between 25 and 45), (b) a base oil containing a straight-chain perfluoropolyether oil with a kinetic viscosity greater than 250 mm2/sec (at 40° C.) expressed by the formula RfO(CF2O)p(C2F4O)q(C3F6O)rRf (where Rf is a perfluoro lower alkyl group, and p, q and r are integers whose total is between 80 and 200) and (c) a polytetrafluoroethylene filler.

Abstract: A sleeve bearing for use in water, the sleeve bearing having a shaft and a sleeve. The sleeve or the shaft is made of a synthetic resin composition obtained by uniformly dispersing fine powder of RBC or CRBC in a resin. The sleeve bearing having a low coefficient of friction in water.

Abstract: To provide a pivot assembly bearing enable maintain it's capabilities longer under frequent quick start and quick stop, the pivot assembly bearing is dispensed a grease composition comprising a base oil, a thickener and an extreme-pressure agent.

Abstract: There is provided a grease composition useful for bearings of cars and aircraft which is stable in a wide range of temperature of 40 to 180° C. and exhibits low torque properties under high loading at low temperatures. A low torque grease composition having dynamic viscosity (40° C.) of 40 to 150 mm2/sec which comprises a base oil consisting of (a) straight-chain perfluoropolyether oil having dynamic viscosity (40° C.) of 25 mm2/sec or less and represented by the following general formula: RfO(CF2O)p(C2F4O)q(C3F6O)rRf, wherein Rf is a perfluoro lower alkyl group and all of p, q and r is an integer and a sum thereof is an integer of 25 to 45 and (b) straight-chain perfluoropolyether oil having dynamic viscosity (40° C.) of 250 mm2/sec or more and represented by the following general formula: RfO(CF2O)p(C2F4O)q(C3F6O)rRf, wherein Rf is a perfluoro lower alkyl group and p, q and r are an integer of 10 to 20; and (c) polytetrafluoroethylene as a thickener.

Abstract: The invention provides a fluorescent grease which enables monitoring of behaviors of the grease for elucidation of the mechanism of grease lubrication, and a rolling element bearing or a condition monitoring rolling element bearing, both charged with the fluorescent grease. The fluorescent grease contains, as its essential components, a base oil, a thickener agent, and a fluorescent substance.

Abstract: A foam-molded synthetic resin material in which a RBC or CRBC fine powder and bubbles are homogeneously dispersed. There is provided an electrically conductive molded resin material of sufficient porosity by using a fine powder of RB ceramics (RBC) or CRB ceramics (CRBC), in which a surface thereof is not covered with a skin layer while an electrically conductive material is directly bared on the surface, and a method for preparing same and uses thereof.

Abstract: A porous material suitable for use in a bearing rolling element. The porous material is obtained by a process which includes mixing degreased bran derived from rice bran with a thermosetting resin before kneading, subjecting a kneaded mixture to a primary firing in an inert gas at a temperature in a range of 700 to 100° C., pulverizing the kneaded mixture after the primary firing into carbonized powders sieved through a screen of 100-mesh, mixing the carbonized powders or the carbonized powders and ceramic powders with a thermosetting resin before kneading, pressure-forming a kneaded mixture thus obtained at a pressure in a range of 20 to 30 MPa, and applying a heat treatment again to a formed kneaded mixture in the inert gas at a temperature in a range of 100 to 1100° C.

Abstract: A fluorine-based oil composition for actuator roller bearings comprising (A) a fluorine-based oil and (B) a fluorinated ether diamide compound at a ratio by weight of 80 to 99.1:20 to 0.1. This composition is much better in torque, outgas and life than existing oil compositions.

Abstract: A high speed rolling bearing of a long life, having a low rotation torque and a small leakage amount of a grease, is provided. The high speed rolling bearing comprises retainers disposed so as to surround respective rolling elements between an outer member and an inner member thereof, and the respective rolling elements roll against a first contact face which is a contact face thereof with the outer member as well as a second contact face which is a contact face thereof with the inner member. The retainers are made of a polyamide, and the retainers made of the polyamide retains a grease composition, composed of a thickener and a base oil composed of a synthetic hydrocarbon oil having kinematic viscosity at 40° C in a range of 50 to 70 mm2/s, and containing 3 to 6 mass % of hydrocarbon molecules containing 28 to 32 carbon atoms.

Abstract: A bearing grease composition used under clean atmosphere, as in a bearing of hard disc drive, which has small dust generation (scatter), a long life, excellent acoustic performance and low torque.

Abstract: There is provided powder detergent containing a surfactant, a powder modifier, a fragrance and a builder, in which the powder modifier comprises a RB ceramics powder and/or CRB ceramics powder at least as one component thereof. The present powder detergent exhibits high stain removability and powder properties as well as improved long term fragrance stability.

Abstract: There is provided a deodorizing and absorbing material comprising RB ceramics and/or CRB ceramics as an odor absorbing material, which has excellent deodorizing properties and long term persistency thereof and is easily fabricated into a complicated shape when the material is used as a molded product.

Abstract: There is provided a polishing compound for sheet metal coating comprising an polishing material and a surfactant in which a RB ceramics and/or CRB ceramics powder is used at least as a part of the polishing material, thereby shortening a stain removing process of a coated surface in reparative sheet metal coating work of cars, etc. without conducting a washing process thereafter.

Abstract: A liquid cleanser comprises an aqueous medium, a surface active agent and a polishing material wherein the polishing material contains as at least one component thereof an RB ceramic and/or CRB ceramic powder.