Abstract: A rolling apparatus including an external member having a raceway surface on an inner peripheral surface thereof, an internal member having a raceway surface on an outer peripheral surface thereof, and a plurality of rolling elements which are rotatably provided between the raceway surface of the external member and the raceway surface of the internal member. A surface of at least one of the internal member, the external member, and the rolling elements is subjected to carbonitriding or nitriding; an area percentage of a nitride containing Si and Mn is 1% or more and 20% or less; surface hardness is HV750 or more. When depth from the raceway surface or depth from a rolling surface of the rolling element is defined as Z and diameter of the rolling element is defined as d, hardness at Z=0.045 d is HV650 to 850, and hardness at Z=0.18 d is HV400 to 800.

Abstract: In a cylindrical roller bearing 20 for continuously variable belt and pulley transmissions which is used at rotational support portions of a continuously variable belt and pulley transmission and in which a plurality of cylindrical rollers 23 are rollably provided in a circumferential direction between an outer ring 21 and an inner ring 22, a raceway surface 23a of the cylindrical roller 23 is made to take the shape of a full crowning, and a radius curvature R of the full crowning is made to satisfy a relationship of 0.01?L2/(Da×R)?0.03 relative to a diameter Da and a roller length L of the cylindrical roller 23.

Abstract: A diameter dimension of a chamfer 11 which is formed on axial end faces of a cylindrical roller 8 which is retained in each pocket 7 of a cage 2 whose axial positioning is realized by a roller guide at a portion which lies closer to an outside diameter side thereof is made such that a central flat surface 9 which lies on an inside diameter side of the chamfer 11 is not exposed from an external surface of an outside diameter side flat plate portion 14. Then, a difference between a minimum value ?B of an amount by which the cylindrical roller 8 projects from the external surface of the outside diameter side flat plate portion 14 and a dimension W11 of the chamfer 11 with respect to a diameter direction thereof is made smaller than a thickness T2 of the cage 2.

Abstract: There are provided first and second characteristic change portions 9 and 10 having characteristic boundary inclination directions different from each other in an inner half portion and an outer half portion of the encoder 4. Detections portions of one pair of sensors 6a1 (6b1, 6c1) and 6a2 (6b2, 6c2) are opposed to three circumferential positions of both the characteristic change portions 9 and 10. A operator has a function of calculating the displacements x, y, z, and inclinations ?x, ?z, on the basis of phase differences among output signals of the sensors 6a1, 6a2, 6b1, 6b2, 6c1, and 6c2.

Abstract: A tilt-type steering apparatus includes a steering column swingably supported by a tilt pivot shaft and rotatably supporting a steering shaft to which a steering wheel is attached, and a tilt bracket fixed to a vehicle body member and tiltably holding the steering column Stress cushioning member is disposed between the steering column and the tilt bracket.

Abstract: A rolling bearing with sensor has an inner ring, an outer ring, rolling elements rollably disposed between the inner ring and the outer ring, a sensor provided on one of the inner ring and the outer ring and a detection member provided on the other of the inner ring and the outer ring radially opposed to the sensor which is adapted to be sensed by the sensor. A first retaining member is fixed to the outer ring end surface of the outer ring and retains one of the sensor and the detection member. A second retaining member is fixed to the inner ring end surface of the inner ring and retains the other of the sensor and the detection member. At least one of the inner end surface and the outer end surface is arranged so as to be pressed axially without the sensor or the detection member.

Abstract: A vehicle steering telescopic shaft having a male shaft and a female shaft so fitted to each other as not to be rotatable but to be slidable. First torque transmitting members are disposed between the male shaft and the female shaft, and roll when the male shaft and the female shaft make relative movements in axial directions. Elastic members are disposed adjacent in a radial direction to the first torque transmitting members and restrict them when rotated and apply a pre-load to the male shaft and the female shaft through the first torque transmitting members when not rotated. Second torque transmitting members are provided between the male shaft and the female shaft, and slide when the male shaft and the female shaft make the relative movements in the axial directions, and transmit a torque when rotated.

Abstract: A change in a magnetic resistance generated between a plurality of windows 23a of a cylindrical member 23 formed by a nonmagnetic material and an output shaft 2 formed by a magnetic material through a torsion of a torsion bar 22 is regarded to be a change in inductances of detecting coils 15p and 15q to detect a steering torque. Coil yokes 16P and 16Q accommodating the detecting coils therein are disposed coaxially on an outer periphery of the cylindrical member 23, and L-shaped bent tip portions of output terminals 15a1 and 15a2 of the detecting coils are inserted into a through hole 18 of a circuit board of a control module CM. The coil yokes 16P and 16Q can easily be attached to a gear box with a rotation and the tip of the output terminal can be arranged with high precision. Terminal holding portions 16P1 and 16Q1 are provided on an inside of a moving track (a circular arc S) so that an interference with other components can be prevented.

Abstract: An electric power steering apparatus including a steering system into which steering torque is inputted, an electric motor for imparting steering assist force to the steering system, a controller for controlling a energizing state of the electric motor according to the steering torque, a terminal board electrically connected to the electric motor, and a control unit provided with a connector, wherein a mounting face of the electric motor with respect to the control unit, a mounting face of the terminal board with respect to the control unit, and a mounting face of the connector with respect to the control unit are arranged on a same plane.

Abstract: A linear guide device has a guide rail 12, a slider body 15, an end cap 16, a large number of rolling bodies 18, and separators 22. The slider body 15 has a slider side rolling body raceway surface opposed to a rail side rolling body raceway surface 13 formed on the guide rail 12. The end cap 16 has a rolling body direction switching path 21 communicating with a rolling body load rolling path 19 formed between both rolling body raceway surfaces of the guide rail 12 and the slider body 15 and also communicating with a rolling body return path 20 formed in a penetrating manner in the slider body 15, along the longitudinal direction of the guide rail 12. In conjunction with relative linear movement of a slider 14 constituted of the slider body 15 and the end cap 16, the rolling bodies 18 roll in the rolling body load rolling path 19, the rolling body return path 20, and a rolling body direction switching path 21. The separators 22 are arranged between every two adjacent rolling bodies 18.

Abstract: A motor driving control device includes a current instruction value computing section 31 which computes a current instruction value for driving a brushless motor 12, a motor current detector 38 which detects a motor current of the brushless motor 12, a current controller 34 which computes a voltage instruction value based on the current instruction value and the motor current, and a rotation information detector 22 which detects an electric angle and a rotation angular velocity of the brushless motor, and the motor driving control device includes a disturbance compensation voltage computing section 41 which computes a disturbance compensation voltage value base on the current instruction value, the electric angle of the brushless motor, and the rotation angular velocity of the brushless motor, and a feed-forward compensator 35 which corrects a voltage instruction value outputted from the current controller based on the disturbance compensation voltage value computed by the disturbance compensation voltage com

Abstract: A ball screw in which surface hardness of balls is higher than both of surface hardness of a ball screw groove of a screw shaft and surface hardness of a ball screw groove of a nut, and a solid lubricant film is formed on a surface of the balls with a thickness of 1 ?m or more and 5 ?m or less. Further, cross-sectional shape of grooves 11 and 21 of a screw shaft 1 and a nut 2 is a Gothic arc. A ratio (R/D) of a radius (R) of the arcuate cross-section of the groove 11 with respect to diameter (D) of balls 2 is set to 51.0% or more and 52.0% or less. The solid lubricant film made of MoS2 is formed on the surface of the balls 3 with a thickness of 0.5 ?m and 3.0 ?m or less.

Abstract: A sealing device 12b of a hub unit bearing O has a first slinger 16 fixed to an inner ring 5, a second slinger 17 fixed to an outer ring 1, and a sealing portion 18 which is fixed to the first slinger 16 and is slide-contacted with the second slinger 17. A magnetic encoder 20 is fixed to the first slinger 16. The magnetic encoder 20 and the sealing portion 18 are bond-fixed to the first slinger 16 with the same adhesive agent.

Abstract: An electrically driven power steering apparatus is structured such that a large impact on a rack shaft occurs upon an impingement of a steering stopper, and, even when an axial force acting on a ball bearing of a presser member becomes zero, a rotation of the presser member is hindered by caulking c at a thin plate member. Therefore, the presser member does not slacken, and a predetermined axial force can be given again to the ball bearing when the impact dissipates. The thus structured power steering apparatus exhibiting, though the cost is low, an excellent shockproof characteristic and capable of preventing the bearing from coming off a ball screw nut, can be provided.

Abstract: A torque detection portion includes a first arm having a detection coil L1 and a resistor R1, and a second arm having a detection coil L2 and a resistor R2. When a test mode is set, a reference voltage Vref having an abnormal value is outputted to a monitoring portion 13. An abnormal condition is intentionally caused in the monitoring portion 13. A main torque signal Vtm is compared with a sub torque signal Vts in the monitoring portion 13. When the reference voltage Vref set in the monitoring portion 13 has the abnormal value, a sub torque signal Vts having a level of 0 (Vts=0) is forcibly outputted in a normal condition. Then the signal Vtm is equal to the signal Vts, the monitoring portion 13 determines that a shortcircuit occurs between a main torque signal line and a sub torque signal line.

Abstract: An object of the invention is to provide a grease composition capable of keeping a good lubrication condition for a long period of time even when water has mixed therein, thereby inhibiting white structure flaking and corrosion. Another object is to provide a vehicular hub unit bearing which hardly suffers from white structure flaking and corrosion even when used in an environment where water may penetrate into it and which therefore has a long life. The invention provides a rolling bearing with, sealed up therein, a grease composition containing a waterproof film-forming additive added thereto; a grease composition for hub unit bearings, containing a base oil that comprises at least one of mineral oil and synthetic oil as the main ingredient thereof, and a thickener and a flaking inhibitor; and a vehicular hub unit bearing with the grease composition sealed up therein.

Abstract: A rolling bearing fixing device includes at least one bearing having mutually rotatable inner and outer rings, a housing having at least one fitting hole into which the bearing is fitted and a bolt insertion hole, a pair of fixing plates having at least one large-diameter hole and a bolt insertion hole; and a bolt inserted from one axial end into the bolt insertion hole of one fixing plate, the bolt insertion hole of the housing, and the bolt insertion hole of the other fixing plate, and connects the housing with the pair of fixing plates. Both axial end parts of the outer ring are held by the pair of fixing plates in the axial direction, the inner ring is positioned further inwardly of the large-diameter hole of the fixing plates in the radial direction and the inner ring is rotatable with respect to the fixing plates.

Abstract: A steering angle sensor detects a rotational angle of a steering system whose steering is assisted by driving of an electric motor via a reduction mechanism so as to calculate a steering angle of a steering wheel. The steering angle sensor includes: a sensor wheel operating simultaneously with rotation of a steering shaft; and an absolute angle calculating unit for calculating an absolute steering angle based on a steering angle signal from the sensor wheel. The sensor wheel includes a GMR element and a magnetizing portion which is arranged around the GMR element, and the rotational angle is detected by making two turns of the steering shaft as one cycle of the steering angle signal based on a change in resistance value of the GMR element obtained by changing a magnetic field direction according to a rotation of the magnetizing portion.

Abstract: A method for manufacturing a variator component of a continuously variable transmission having a plurality of cylindrical sections and a plurality of ball spline grooves, which are provided alternately in an inner radial region of the variator component. The method includes: simultaneously finishing the cylindrical sections and the ball spline grooves through use of a hard broaching tool; and finishing functional surfaces provided on side surfaces of the variator component while taking the cylindrical sections as a machining reference.

Abstract: A separator for use in a linear guide apparatus including a guide rail, a slider, and a plurality of rollers which circulate along an endless circulation passage provided in the guide rail and the slider and having guide grooves. The separator includes a separator body interposed between the rollers and having a pair of roller contact surfaces respectively opposing outer peripheral surfaces of the adjacent rollers, and a pair of arm portions which are guided by the guide grooves. A surface of each of the arm portions opposing the guide groove is formed such that an opposition distance with respect to the guide groove becomes wider from a fixed end side of the arm portion toward a free end thereof.