Provided are a motor device and a method for manufacturing the same that can accurately and consistently provide a support shaft to a case and enhance the strength for fixing the support shaft to the case. A small-diameter part having a smaller diameter than a large-diameter part is formed through drawing. The large-diameter part and a step part are embedded in a gear case. The small-diameter part is exposed outside the gear case. The dimensional accuracy (dimensional tolerance ±α) of the external diameter of the small-diameter part is enhanced. The small-diameter part can be set, without rattling, in a lower mold for molding the gear case. Consequently, the support shaft can be accurately and consistently provided to the gear case. Because the large-diameter part and the step part are embedded in the gear case, the resistance of the support shaft against pulling from the gear case can be enhanced.

Provided are a motor device and a method for manufacturing the same that can accurately and consistently provide a support shaft to a case and enhance the strength for fixing the support shaft to the case. A small-diameter part having a smaller diameter than a large-diameter part is formed through drawing. The large-diameter part and a step part are embedded in a gear case. The small-diameter part is exposed outside the gear case. The dimensional accuracy (dimensional tolerance ±α) of the external diameter of the small-diameter part is enhanced. The small-diameter part can be set, without rattling, in a lower mold for molding the gear case. Consequently, the support shaft can be accurately and consistently provided to the gear case. Because the large-diameter part and the step part are embedded in the gear case, the resistance of the support shaft against pulling from the gear case can be enhanced.

Provided is a reduction gear comprising a bearing state detection device capable of detecting the state of a rolling bearing that rotates integrally with an output shaft and an output gear during power transmission. The bearing state detection device comprises: a plurality of displacement sensors (1, 2, 11, 12), which are disposed in mutually differing positions at the sides of output gears (26, 27) having helical threads (35a, 37a) formed in the outer peripheral surfaces, and which detect the amount of axial displacement of the side surfaces of the output gears; and a processing unit (5), which determines the amount of tilt of the gears (26, 27) on the basis of the amount of displacement detected by the plurality of displacement sensors (1, 2, 11, 12) during rotation of the output gears (26, 27) when the output gears are linked to an output shaft (25) by a linking mechanism (32).

An extrusion profile comprises a center aperture. The extrusion profile also comprises a peripheral aperture. The profile also comprises a first set of drill guides corresponding to a vertical center of the center aperture and a second set of drill guides corresponding to a horizontal center of the center aperture.

A casing for a shaft assembly, a shaft assembly, a method of forming a casing, and a drive assembly. The casing may generally include a liner defining a central passage and having a body and an outwardly-extending leg (e.g., extending circumferentially about and/or axially along the body), and a cover extending circumferentially about and axially along the liner.

A bearing including a body having a first axial end and a second axial end; and at least one flange projecting radially from the second axial end of the body, where the at least one flange includes a first region, second region, and a stepped transition region between the first and second regions, where the second region is elevated axially above the first region so as to protrude axially outwardly, where 1) the second region extends partially circumferentially around the flange to form at least one segment, and/or 2) the first region extends from the body to the stepped transition region.

A transmission shaft is provided comprising an input side for inputting torque, an output side for outputting torque, and a rod extending in a longitudinal direction between the input side and the output side to transfer torque along the transmission shaft. The rod comprises a first end provided at the input side, a second end provided at the output side and a torsional compliant section extending therebetween providing the transmission shaft with a torsional stiffness. The torsional compliant section comprises a cross-section which extends in the longitudinal direction to define a central core for transmitting torque directly from the first end to the second end and a radially outer section. This section also comprises a plurality ribs which extend radially and longitudinally from an outer periphery of the central core for increasing transverse stiffness of the rod.

Provided is a reduction gear comprising a bearing state detection device capable of detecting the state of a rolling bearing that rotates integrally with an output shaft and an output gear during power transmission. The bearing state detection device comprises: a plurality of displacement sensors (1, 2, 11, 12), which are disposed in mutually differing positions at the sides of output gears (26, 27) having helical threads (35a, 37a) formed in the outer peripheral surfaces, and which detect the amount of axial displacement of the side surfaces of the output gears; and a processing unit (5), which determines the amount of tilt of the gears (26, 27) on the basis of the amount of displacement detected by the plurality of displacement sensors (1, 2, 11, 12) during rotation of the output gears (26, 27) when the output gears are linked to an output shaft (25) by a linking mechanism (32).

A metal sleeve including a metal body which surrounds an inner channel running between a proximal and a distal opening. The inner channel has at least one groove set back into the metal body, running in the longitudinal direction of the inner channel and stepped on both sides by a distal and a proximal front edge. The proximal front edge of the groove is produced by impact extrusion.

A method for producing a metal sleeve includes providing a first metal sleeve semi-finished product having a metal body. The metal body surrounds an inner channel. At least one groove is located in the metal body on the side of the inner channel. The first metal sleeve semi-finished product is pressed into a first die by means of a punch and in the process is formed by impact extrusion into the metal sleeve to be produced. The first die is designed such that a proximal front edge, which is spaced apart from the distal front edge and delimits the groove in the proximal direction, is formed in the metal body on the side of the inner channel. A metal sleeve includes a metal body which surrounds an inner channel running between a proximal and a distal opening. The inner channel has at least one groove set back into the metal body, running in the longitudinal direction of the inner channel and stepped on both sides by a distal and a proximal front edge. The proximal front edge of the groove is produced by impact extrusion. A method for producing a gearbox is provided.