Abstract: A stator heating apparatus that includes a support that supports a stator in which a stator coil is mounted to a stator core and that is driven by a rotary to rotate the stator; a first heater that includes an induction coil inserted into a cavity portion provided at an axial center of the stator core of the stator supported by the support to be disposed to heat the stator through induction heating, the first heater heating the stator from a radially inner side of the stator; and a second heater that includes a hot-air outlet port that blows hot air toward an outer surface of a coil end portion of the stator supported by the support to heat the stator using the hot air, the second heater heating the stator from a side of the outer surface of the coil end portion, wherein the stator is heated by the first heater and the second heater.

Abstract: A varnish impregnation apparatus that includes a support that supports a stator, in which the stator coil is mounted to the stator core, with an axial direction of the stator directed in a horizontal direction while grasping a radially outer side of the stator, and that is rotationally driven by a rotary device to rotate the stator; a varnish dropping device that drops the varnish toward a coil end portion of the stator which is rotated while being supported by the support; and a heater disposed in a cavity portion provided at an axial center of the stator core of the stator supported by the support to heat the stator from a radially inner side of the stator.

Abstract: A stator heating apparatus that includes a support that supports a stator in which a stator coil is mounted to a stator core and that is driven by a rotary to rotate the stator; a first heater that includes an induction coil inserted into a cavity portion provided at an axial center of the stator core of the stator supported by the support to be disposed to heat the stator through induction heating, the first heater heating the stator from a radially inner side of the stator; and a second heater that includes a hot-air outlet port that blows hot air toward an outer surface of a coil end portion of the stator supported by the support to heat the stator using the hot air, the second heater heating the stator from a side of the outer surface of the coil end portion, wherein the stator is heated by the first heater and the second heater.

Abstract: A varnish impregnation apparatus that includes a support that supports a stator, in which the stator coil is mounted to the stator core, with an axial direction of the stator directed in a horizontal direction while grasping a radially outer side of the stator, and that is rotationally driven by a rotary device to rotate the stator; a varnish dropping device that drops the varnish toward a coil end portion of the stator which is rotated while being supported by the support; and a heater disposed in a cavity portion provided at an axial center of the stator core of the stator supported by the support to heat the stator from a radially inner side of the stator.

Abstract: With the inner race and shaft fitted with a clearance fit, the bearing satisfies the relation: t/w>0.5, where t is an inner race minimum thickness at a contact area between each rolling element and the inner race raceway, in the direction perpendicular to the raceway, and w is the circumferential distance between adjacent rolling elements (w=?×SD/Z, Z is the number of rolling elements, and SD is the bearing inner diameter). With the outer race and housing fitted with a clearance fit, the bearing satisfies the relation: t/w>0.5, where t is the inner race minimum thickness at a contact area between each rolling element and the outer race raceway, in the direction perpendicular to the raceway, and w is the circumferential distance between adjacent rolling elements (w=?×LD/Z, LD is the bearing inner diameter).

Abstract: With the inner race and shaft fitted with a clearance fit, the bearing satisfies the relation: t/w>0.5, where t is an inner race minimum thickness at a contact area between each rolling element and the inner race raceway, in the direction perpendicular to the raceway, and w is the circumferential distance between adjacent rolling elements (w=?×SD/Z, Z is the number of rolling elements, and SD is the bearing inner diameter). With the outer race and housing fitted in a clearance fit, the bearing satisfies the relation: t/w>0.5, where t is the inner race minimum thickness at a contact area between each rolling element and the outer race raceway, in the direction perpendicular to the raceway), and w is the circumferential distance between adjacent rolling elements (w=?×LD/Z, LD is the bearing inner diameter).

Abstract: To reduce the weight of the wheel support bearing assembly without sacrificing the strength, the wheel support bearing assembly for rotatably supporting a vehicle wheel relative to a vehicle body structure includes a hub axle (2) formed with a radially outwardly extending hub flange (12). This hub flange (12) has an inner peripheral portion and a remaining wall portion other than the inner peripheral portion, and the remaining wall portion thereof is constituted by a plurality of radially outwardly extending ribs (13) each formed with a bolt insertion hole (14). The hub axle (2) also includes a brake pilot area (16) extending outwardly from an outboard face of the hub flange (12) for guiding an inner peripheral surface of the brake rotor (41). At least the root diameter (D1) of at least an inboard face of each rib (13) is chosen to be equal to or smaller than the outer diameter (D2) of the brake pilot area (16).

Abstract: A chain tensioner keeps constant the tension of a chain for transmitting the rotation of an engine crankshaft to e.g. camshafts. It includes a housing having a cylinder chamber. A rod member has its rear end inserted in the cylinder chamber for pressing a chain. A tension adjusting spring biases the rod member outwardly of the housing. The chain tensioner further includes a hydraulic damper for damping a dynamic load applied to the rod member from the chain, and a thread engagement mechanism for preventing the rod member from retracting under a static load applied to the rod member.