Abstract: A ball screw device includes a screw shaft; a ball nut; a first deflector fitted to an end portion of the ball nut; a ball guide portion that guides balls positioned in a helical inner ball passage formed by the ball nut and the screw shaft, to a first end portion ball passage in the first deflector; the balls that are set to form a row extending in the inner ball passage and the first end portion ball passage; and a first elastic member having a base end that is positioned in the first end portion ball passage and a distal end that is disposed and accommodated in the first end portion ball passage so as to be able to contact the ball positioned at one end of the row of the balls.

Abstract: A ball screw device includes a piston that surrounds the outer periphery of a ball nut. An outer periphery turning groove is formed in the outer peripheral face of the ball nut. The outer periphery turning groove and the inner peripheral face of a cylindrical portion of the piston constitute a turning rolling path. The turning rolling path and connection passages of deflectors constitute a returning path through which balls are returned from a rolling end position to a rolling start position. An internally-fitting portion is formed at one end portion of the ball nut in the axial direction. When the outer periphery of the internally-fitting portion and the inner periphery of the cylindrical portion are fitted to each other, relative rotation of the ball nut and the piston is prevented.

Abstract: An electromagnetic absorber (10) for a vehicle including (a) a threaded rod (78) which is disposed on one of a sprung portion and an unsprung portion and which has a threaded groove (76) formed in its outer circumferential portion and an axial groove (90) extending in its axis direction (b) a nut (80) which is rotatably disposed on the other of the sprung portion and the unsprung portion and which is screwed with the threaded rod and (c) a rod-rotation inhibiting member (82) which includes a fitting portion configured to be fitted in the axial groove and which is disposed on the other of the sprung portion and the unsprung portion, the rod-rotation inhibiting member being configured to inhibit the threaded rod from rotating while permitting the threaded rod to move in the axis direction.

Abstract: A ball spline includes a connecting part of a cage of a spline nut has a turning ball receiving part adapted to receive balls which are turning from a no-load raceway part, and a turned ball receiving part adapted to receive the balls which are forwarded to a main passage after turning. An outer diameter of the turning ball receiving part is made larger than an outer diameter of the turned ball receiving part.

Abstract: A ball screw includes a screw shaft, in which a thread groove is formed in an outer peripheral face thereof, that includes a small-diameter portion with a diameter smaller than an outer diameter of the screw shaft formed integrally at one end of the screw shaft; a nut, through which the screw shaft passes, having a thread groove formed in an inner peripheral face thereof; a plurality of balls disposed in a ball passage formed by the thread groove of the screw shaft and the thread groove of the nut; and a ring-shaped stopper, immovably fitted on the small-diameter portion, that prevents the nut from moving.

Abstract: There is provided a vehicular-wheel bearing assembly. The vehicular-wheel bearing assembly includes an inner shaft (1), an outer ring (2) provided around the inner shaft (1), and two rows of balls (3aand 3b) provided between the inner shaft (1) and the outer ring (2) in angular contact with the inner shaft (1) and the outer ring (2). An annular raceway member (4) with a curved section that is a separate member from the inner shaft (1) and the outer ring (2) and has a raceway surface for the rolling element is provided on an outer peripheral surface (11) of the inner shaft (1) and an inner peripheral surface (12) of the outer ring (2).

Abstract: There is provided a ball spline in which a difference between a P.C.D. of loaded balls and a P.C.D. of circulating balls can be made smaller, without making a spline shaft different in diameter. A connecting part 22 of a cage 6 of a spline nut 2 has a turning ball receiving part 23a adapted to receive balls 3 which are turning from a no-load raceway part 21, and a turned ball receiving part 23c adapted to receive the balls which are forwarded to a main passage 10 after turning. An outer diameter of the turning ball receiving part 23a is made larger than an outer diameter of the turned ball receiving part 23c.

Abstract: A pulser ring and a second seal ring are separately formed. When a multipolar magnetic rotor of the pulser ring is bonded to an outer circumferential face of an outer cylindrical portion of an annular core portion, the multipolar magnetic rotor is opposed to a magnetic sensor in the radial direction. Due to the above structure, the multipolar magnetic rotor can be strongly supported by an outer cylindrical portion of the annular core portion. Therefore, even when a rotary centrifugal force is given to the multipolar magnetic rotor, it can not be swung in the radial direction. Accordingly, an interval of the multipolar magnetic rotor and the magnetic sensor in the radial direction, which are opposed to each other, can be maintained constant irrespective of an intensity of the centrifugal force.

Abstract: A ball screw with ball splines is provided which eliminates a fear that balls within a screw groove override spline grooves. A ball screw with ball splines includes a screw shaft 1 having a screw groove 6 and a plurality of straight line-like spline grooves 7 extending in an axial direction which are formed on an outer circumferential surface thereof, a screw nut 2 through which the screw shaft 1 is inserted and on which a screw balls circulating path is formed which corresponds to the screw groove 6 on the screw shaft 1, a spline nut 3 through which the screw shaft 1 is inserted and on which spline balls circulating paths are formed which correspond to the spline grooves 7 on the screw shaft 1, a plurality of screw balls 4 installed in the screw balls circulating path on the screw nut 2, and a plurality of spline balls 5 installed in the spline balls circulating paths on the spline nut 3.

Abstract: An electromagnetic absorber (10) for a vehicle including (a) a threaded rod (78) which is disposed on one of a sprung portion and an unsprung portion and which has a threaded groove (76) formed in its outer circumferential portion and an axial groove (90) extending in its axis direction (b) a nut (80) which is rotatably disposed on the other of the sprung portion and the unsprung portion and which is screwed with the threaded rod and (c) a rod-rotation inhibiting member (82) which includes a fitting portion configured to be fitted in the axial groove and which is disposed on the other of the sprung portion and the unsprung portion, the rod-rotation inhibiting member being configured to inhibit the threaded rod from rotating while permitting the threaded rod to move in the axis direction.

Abstract: To provide a rolling-bearing sensor attaching sealing device capable of ensuring a sufficient magnetic force with respect to a sensor and a vehicle rolling bearing using the same. A vehicle rolling bearing 1 according to the invention includes a sensor attaching sealing device including an annular slinger 10 fixed to an inner shaft 2; a magnetic encoder 11 fixed to the slinger 10 so as to be integrally rotatable; and a sensor part 12 which includes a metal core 14 fixed to an outer ring 3 and provided with a seal member 15 slidably contacting with the slinger 10 and a magnetic sensor 13 detecting a relative rotation between the outer ring 3 and the inner shaft 2 by a variation of a magnetic pole using the magnetic encoder 11. The magnetic encoder 11 is formed by a plastic magnet which contains magnetic powders oriented with a magnetic field in a predetermined direction.

Abstract: A method of making a coated article is provided. The method includes electrostatically depositing powder onto a metallic article to be coated using an electrostatic spray gun while the metallic article is being rotated around its axis such that the powder is deposited around the entire circumference of the metallic article at least in a radially outward peripheral region having projections and depressions and that the powder deposited on top of the projections is larger in thickness than the powder deposited in other parts of the metallic article. Melting of the powder is performed by induction heating the metallic article to make a coating film adhere to the metallic article.

Abstract: In a ball screw device, a ball screw nut is rotated, causing a screw shaft to rectilinearly move in the axial direction, and the limit of the movement of the screw shaft is determined by a stopper. The ball screw device includes a hollow shaft that rotates together with the ball screw nut and in which the screw shaft is movably fitted. The hollow shaft is provided with a small diameter portion that exerts a dragging force on the screw shaft before the screw shaft reaches the limit, and a buffer layer is formed on a tip portion of the screw shaft.

Abstract: A ball screw includes a screw shaft, in which a thread groove is formed in an outer peripheral face thereof, that includes a small-diameter portion with a diameter smaller than an outer diameter of the screw shaft formed integrally at one end of the screw shaft; a nut, through which the screw shaft passes, having a thread groove formed in an inner peripheral face thereof; a plurality of balls disposed in a ball passage formed by the thread groove of the screw shaft and the thread groove of the nut; and a ring-shaped stopper, immovably fitted on the small-diameter portion, that prevents the nut from moving.

Abstract: A hub unit with a sensor comprises a hub unit 1 including a body-side raceway member 3, a wheel-side raceway member 4 and two rows of rolling elements 5, and a sensor device 2. The sensor device 2 includes a magnetostrictive sensor 8 for detecting the inverse magnetostrictive effect, and the magnetostrictive sensor 8 is mounted to the body-side raceway member 3 so as to be capable of measuring the tensile strain in the uppermost part of an inner wheel 17 of the wheel-side raceway member 4. From the output of the magnetostrictive sensor 8, the tire grounding load and the rotational velocity are detected.

Abstract: There is provided a vehicular-wheel bearing assembly that can reduce production costs, and has a raceway surface with predetermined hardness that is not affected by material of a counterpart member mounted thereto. The vehicular-wheel bearing assembly includes an inner shaft (1), an outer ring (2) provided around the inner shaft (1), and two rows of balls (3a and 3b) provided between the inner shaft (1) and the outer ring (2) in angular contact with the inner shaft (1) and the outer ring (2). An annular raceway member (4) with a curved section that is a separate member from the inner shaft (1) and the outer ring (2) and has a raceway surface for the rolling element is provided on an outer peripheral surface (11) of the inner shaft (1) and an inner peripheral surface (12) of the outer ring (2).

Abstract: A pulser ring and a second seal ring are separately formed. When a multipolar magnetic rotor of the pulser ring is bonded to an outer circumferential face of an outer cylindrical portion of an annular core portion, the multipolar magnetic rotor is opposed to a magnetic sensor in the radial direction. Due to the above structure, the multipolar magnetic rotor can be strongly supported by an outer cylindrical portion of the annular core portion. Therefore, even when a rotary centrifugal force is given to the multipolar magnetic rotor, it can not be swung in the radial direction. Accordingly, an interval of the multipolar magnetic rotor and the magnetic sensor in the radial direction, which are opposed to each other, can be maintained constant irrespective of an intensity of the centrifugal force.

Abstract: Balls are interposed between respective raceway surfaces of inner and outer ring members, and a seal apparatus is provided between shoulder portions of the inner and outer ring members. The seal apparatus comprises an outer ring-side seal ring fixed to the outer ring member, and an inner ring-side seal ring fixed to the inner ring member. A pulser ring is fixed to a ring-shaped core metal of the inner ring-side seal ring. In an outer diameter side of the ring-shaped core metal of the outer ring-side seal ring, a magnetic sensor is molded with resin by an external member to be integrated therein. A connector connected to the magnetic sensor is formed consecutive with the external member.

Abstract: A pulser ring and a second seal ring are separately formed. When a multipolar magnetic rotor of the pulser ring is bonded to an outer circumferential face of an outer cylindrical portion of an annular core portion, the multipolar magnetic rotor is opposed to a magnetic sensor in the radial direction. Due to the above structure, the multipolar magnetic rotor can be strongly supported by an outer cylindrical portion of the annular core portion. Therefore, even when a rotary centrifugal force is given to the multipolar magnetic rotor, it can not be swung in the radial direction. Accordingly, an interval of the multipolar magnetic rotor and the magnetic sensor in the radial direction, which are opposed to each other, can be maintained constant irrespective of an intensity of the centrifugal force.

Abstract: An outer ring is provided with the stator of a resolver, and a ring member with the rotor of the resolver. The stator comprises an annular core and a winding provided around the core. The ring member is provided at a position opposed to the stator with an eccentric cylindrical face serving as the rotor and eccentric with respect to other outer peripheral surface of the ring member.