Abstract: In a reverse input cutoff clutch (1), two contact parts (PI1 and PI2) of a first group are respectively disposed closer to a first reference line (RL1) than two of a fifth contact part (PO1), a sixth contact part (PO2), a seventh contact part (PO3), and an eighth contact part (PO4), and two contact parts (PI3 and PI4) of a second group are respectively disposed farther from the first reference line (RL1) than the other two of the fifth contact part (PO1), the sixth contact part (PO2), the seventh contact part (PO3), and the eighth contact part (PO4).

Abstract: The electric friction engagement device has a function of detecting a phase in a rotational direction of a drive cam when an output torque or current value of a shift motor begins to increase at a rate of increase equal to or greater than a first threshold value as a piston touch point and a function of detecting a phase in the rotational direction of the drive cam when the rate of increase becomes equal to or less than a second threshold value after exceeding the piston touch point as a clutch touch point.

Abstract: This load estimating device for a rolling bearing comprises: a vibration sensor for measuring vibrations of the rolling bearing during rotation; a rotational speed sensor for measuring the rotational speed of the rolling bearing during rotation; a deriving means for deriving a vibration value for a predetermined vibration frequency, using vibration information measured by the vibration sensor; and an estimating means for estimating a load acting on the rolling bearing, said load corresponding to the rotational speed measured by the rotational speed sensor and the vibration value derived by the deriving means, using a table defining a correspondence relationship between the load acting on the rolling bearing, the vibration value for the predetermined vibration frequency, and the rotational speed.

Abstract: A ball screw device of the present disclosure includes: a screw shaft in which an outer peripheral raceway surface is provided on an outer peripheral surface; a nut into which the screw shaft is inserted and in which an inner peripheral raceway surface is provided on an inner peripheral surface; a plurality of balls arranged on a raceway between the outer peripheral raceway surface and the inner peripheral raceway surface; and at least one deflector provided with an S-shaped groove surface that circulates the balls. The outer peripheral surface of the screw shaft is provided with a recess portion that is recessed to an inner side in a radial direction and that houses the deflector, and an inner peripheral surface of the recess portion and an outer peripheral surface of the deflector are not circular when viewed from an outer side in the radial direction of the screw shaft.

Abstract: A rotation support device includes a rotation shaft; and a pair of support mechanisms that rotatably support the rotation shaft, respectively. One of the pair of support mechanisms includes a bearing unit including a bearing housing and a bearing that rotatably supports the rotation shaft with respect to the bearing housing, a support base through which the rotation shaft passes or disposed around the rotation shaft, and a housing position adjustment mechanism disposed between the bearing unit and the support base. The housing position adjustment mechanism includes a support base side member provided on a support base side, a bearing housing side member provided on a bearing housing side and movable in the axial direction relative to the support base side member, and a working fluid in a compressed state filling a pressure chamber formed between the support base side member and the bearing housing side member.

Abstract: The present invention provides a grease composition for rolling bearings, comprising a base oil; as a thickener, a complex amido-lithium soap; as antioxidants, 0.5 to 5% by mass of an amine-based antioxidant and 0.5 to 5% by mass of a phenol-based antioxidant, based on the total mass of the composition; and as rust inhibitors, 0.1 to 5% by mass of a carboxylic acid-based rust inhibitor, 0.1 to 5% by mass of a carboxylate-based rust inhibitor, and 0.1 to 3% by mass of an amine salt of a fatty acid, based on the total mass of the composition, wherein a 60-stroke worked penetration is 260 to 320 as measured according to JIS K 2220 7.

Abstract: A rotation support device includes a rotation shaft, and a pair of support mechanisms that rotatably support both end portions in an axial direction of the rotation shaft, respectively. One of the pair of support mechanisms includes a bearing unit including a bearing housing and a bearing, a support base, and a housing position adjustment mechanism. The housing position adjustment mechanism includes a support base side member through which the rotation shaft passes or disposed around the rotation shaft, a bearing housing side member through which the rotation shaft passes or disposed around the rotation shaft, and movable in the axial direction relative to the support base side member, an elastic member disposed between the support base side member and the bearing housing side member, and a damping member disposed between opposing surfaces of the support base side member and the bearing housing side member.

Abstract: A support mechanism which supports both ends in an axial direction of a screw shaft in a rotatable manner includes a bearing unit including a movable side bearing housing and a pair of angular ball bearings, a support base, and a housing position adjustment mechanism disposed between the bearing unit and the support base. The housing position adjustment mechanism includes a support base side member, a bearing housing side member, a partition member disposed in a space formed between the support base side member and the bearing housing side member and dividing the space in the axial direction into a first space and a second space, a plurality of disc spring and a first working fluid accommodated in a compressed state in the first space, and a hollow member and a second working fluid accommodated in a compressed state in the second space.

Abstract: A mechanical equipment monitoring system includes a sensor, an actuator, a communication unit that transmits a trigger signal when the actuator is in a suitable state for the sensor to detect an operational state of the actuator, an information collection unit that collects, from the sensor, operational state data which indicates the operational state detected by the sensor upon receiving the trigger signal from the communication unit, and an information processing device that monitors the actuator based on the operational state data collected by the information collection unit.

Abstract: A manufacturing method of a rolling bearing ring comprising: a step of obtaining a base member; a step of forming, by laser cladding, a cladded layer made of a metal material having a higher hardness than the base member on one surface of the body member; a step of forming a rolling element guide surface by finishing a surface of the cladded layer; and a step of forming, by laser hardening, a hardened layer over the entire circumference of a surface layer portion of at least a part of the base member that is separated from the cladded layer.

Abstract: A reverse-input blocking clutch includes a housing, an input shaft, an output shaft, a pair of engaging elements, a first bearing mechanism provided between the input shaft and the housing, and a second bearing mechanism provided between the output shaft and the housing. At least one of the input shaft, the output shaft, and the housing has a raceway surface which contacts at least one rolling element of the first bearing mechanism and the second bearing mechanism.

Abstract: A roller bearing includes an outer ring, an inner ring, and plural rolling elements rollably interposed between mutual raceway surfaces of the outer and inner rings, and is used by fitting an outer diameter surface of the outer ring serving as a fitting surface to a housing serving as a mating member or by fitting an inner diameter surface of the inner ring serving as a fitting surface to a shaft serving as the mating member. The fitting surface is provided with at least one protrusion so that a static torque Thold=?(F×r) generated by the protrusion is equal to or greater than a torque Tcreep generated by creep.

Abstract: A method for producing a composite material molded article includes a process of, from a solution in which reinforcing fibers with an average fiber length of 0.5 mm or more and thermosetting resin are dispersed and mixed in a solvent, removing the solvent by paper-making to form a preform, and a process of press molding the obtained preform using a mold set at a temperature equal to or higher than a curing temperature of the thermosetting resin to form the composite material molded article.

Abstract: Provided is a sliding member in which a first member having a low hardness and a second member having a high hardness slide against each other via a lubricant. The sliding member has an optimized profile relationship between large waviness and fine roughness applied to the first member, improved retention and wettability of the lubricant, and increased seizure resistance. In the sliding member in which the first member and the second member having a higher hardness than the first member slide against each other via a lubricant, an isotropic texture in which a valley area is 1000 ?m2/mm or more and 20000 ?m2/mm or less and RLo (?c: 0.08 mm) is 1% or more and 12% or less is applied to a part of the first member which is in contact with the second member.

Abstract: A reverse-input blocking clutch includes a leaf spring having: two held portions that is arranged on both sides of an input-side engaging portion of an input member with respect to a second direction perpendicular to a first direction which is a direction of movement of a pressing surface of an engaging element moving away from or toward a pressed surface of a pressed member and a center axis of the input member, and elastically held between the input-side engaging portion and an input-side engaged portion of the engaging member; and a base portion that connects the two held portions.

Abstract: A method for manufacturing a worm wheel including an inner wheel element including a side plate portion and a tubular eave portion, and an outer wheel element including a wheel tooth portion on an outer circumferential surface thereof, and coupled and fixed to the inner wheel element in a manner of covering a radially outer portion of the side plate portion and the eave portion, the method includes: molding the outer wheel element by disposing a mold around a radially outer portion of the inner wheel element, and feeding the molten synthetic resin from an annular or arc-shaped injection gate toward a pocket portion that is continuous over an entire circumference of a cavity present between an inner surface of the mold and a surface of the inner wheel element and that is present on a radially inner side of the eave portion.

Abstract: A method for diagnosing a rolling device including a rolling element and a peripheral member of the rolling element, the method including: applying an AC voltage to an electric circuit including the rolling element and the peripheral member; measuring an impedance and a phase angle when the AC voltage is applied; correcting the measured impedance and the measured phase angle using a correction formula based on a solution of Kirchhoff's law defined corresponding to a resistance and a reactance by a wiring component in the electric circuit; and calculating a lubricating film thickness and a metal contact ratio based on the corrected impedance and the corrected phase angle.

Abstract: An outer diameter of a claw portion is smaller than an outer diameter of a main portion, a radial width of the claw portion is ½ or less of a radial width of the main portion, an axial width from an upper surface of a connection portion of a pillar portion to a bottom surface of the main portion is ½ or less of an axial width of a crown type cage for a ball bearing, and in the main portion, an opening portion is provided between adjacent pockets.

Abstract: A ball screw device having a screw shaft, a nut, a plurality of balls, a carrier constituting a planetary reduction mechanism, a rolling bearing for rotatably supporting the carrier, where the screw shaft includes a screw portion having a spiral-shaped shaft-side ball screw groove on an outer circumferential surface thereof, and a fitting shaft portion, the carrier is fixed to the fitting shaft portion such that relative rotation is not possible, an inner ring raceway of the rolling bearing is formed directly on an outer circumferential surface of the carrier.

Abstract: An application position of a processing force directed radially outward is continuously changed in the circumferential direction of a cylindrical portion (25) while applying the processing force to a part of the cylindrical portion (25) of a hub main body (21) in the circumferential direction. An application position of a processing force directed radially inward is continuously changed in the circumferential direction of a staking portion intermediary body (41) while applying the processing force to a part of the staking portion intermediary body (41) in the circumferential direction.