There is provided an electric actuator in which a speed reduction mechanism and an output portion are disposed adjacent to each other in a radial direction in an opening portion of a housing main body, a cover member has a speed reduction mechanism cover which faces and surrounds the speed reduction mechanism, an output portion cover which faces and surrounds the output portion, and a constricted portion which connects the speed reduction mechanism cover and the output portion cover, the cover member is fixed to the housing main body by a plurality of caulking portions provided on a side wall portion, and, between two adjacent caulking portions interposing the constricted portion therebetween, one of the two caulking portions of the speed reduction mechanism cover is fixed toward a central axis of the speed reduction mechanism, and the other is fixed toward a central axis of the output portion.

A miniturized laminar gear box possessing high torque densities and methods of manufacturing the same. The high torque density is possible by directing the output shaft of the planetary stages through the sun gear and behind the input shaft. This allows the input shafts of the planetary stages to face towards the interior of the gearbox and provides a rotary shaft for the spur stages housed in between the planetary stages.

An electric motor equipped with a transmission unit in the form of a planetary gear transmission is provided. The planetary gear transmission has a sun gear, planetary gears, and a ring gear, which are coupled to one another via corresponding toothings. The sun gear is coupled directly to a shaft of the electric motor and is fastened thereto. The planetary gears or axles thereof are retained on a bearing plate of the electric motor. The ring gear is rotatably mounted on the housing of the electric motor or is fastened to the housing of the electric motor. A common feature is that parts of the transmission are retained on the housing of the electric motor and not on a separate housing or another component of the transmission unit.

The invention relates to a gearbox including a first shaft, a second shaft, an intermediate shaft transmitting the movement from the first shaft to the second shaft and a casing delimiting a chamber, the first shaft and the second shaft each extending at least partially outside the casing, the intermediate shaft being accommodated in the chamber and comprising a first gearing element cooperating with the first shaft and a second gearing element cooperating with the second shaft. The first shaft and the intermediate shaft are arranged at a first height, the second shaft being arranged at a second height lower than the first height, and the gearbox includes a splash tub containing a lubricant, the first gearing element being at least partially submerged in the splash tub.

A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. An integrated actuator housing includes a single external power access for the shift actuator. A controller interprets controls the shift actuator with actuating and opposing pulses, and interprets a shaft displacement angle, determines if the transmission is in an imminent zero or zero torque region, and performs a transmission operation in response to the transmission in the imminent zero or zero torque region.

An oil pump drive device (1) may include a housing (G), an oil pump drive shaft (AN), an electric motor, and a planetary gear set (RS). The planetary gear set (RS) may be supported by the housing (G) and have a first element (E1) connected to a rotor (R) of the electric motor, a second element (E2) connected to the oil pump drive shaft (AN), and a third element (E3) drivable by a drive source located outside the oil pump drive device (1). A first bearing (L1) may be supported on the housing (G) and may support at least one of the elements (E1, E2, E3) of the planetary gear set (RS) in a radial direction. The stator (S) of the electric motor is at least partially surrounded by a plastic mass (K), where the stator (S) is attached to the housing (G) via the plastic mass (K).

An electric linear drive for a gear rack including a stepping motor, a holding plate, a motor output gear, and a gearing. The holding plate, the stepping motor, the motor output gear, and the gearing form a drive unit that, together with a basic housing, form an overall housing. The overall housing has an opening for the insertion of the gear rack. Drive electronics are fixed to the holding plate such that electrical connections are present on the outside of the overall housing. The stepping motor has a rotor axis arranged parallel to the holding plate. During assembly, a rack belonging to a device to be driven can be pushed into a lateral opening of the overall housing, and the device to be driven can be connected to the overall housing. The electric linear drive is compact, allowing devices to be driven to be located close to one another.

A rotating machine and a pinion shaft are separately arranged on opposite sides to each other in the vehicle front-rear direction across a third axis that is an axis of a differential device in plan view as seen from above the vehicle. This configuration enables the rotating machine, a parallel shaft transmission, the pinion shaft, the differential device, and others to be integrally assembled to a case, to thereby configure an electric drive unit to be compact, which is advantageous in space.

A gear-box casing in a gas turbine engine, in particular an aircraft engine, characterized in that the gear-box casing has partially a region including fiber reinforced plastic, the fibers in this region being arranged only in an angular range of +/40 to 50, in particular of +/42 to 48, most particularly +/45, in relation to the main axis of rotation of the gear-box casing. The invention also concerns a method for producing a gear-box casing and a gas turbine engine.

A transaxle includes: an axle housing in which an input gear is rotatably supported; a differential casing that is contained in the axle housing while being rotatably supported relative to the axle housing; first and second side gears as a pair of spur gears that are contained in the differential casing, coaxially arranged, relatively rotatable with each other, and rotatable relative to the differential casing; a group of pinions as spur gears that are rotatably supported, in the differential casing, by rotational shafts that are in parallel with axes of the first and the second side gears in the differential casing, the group of pinions transmitting power between the first side gear and the second side gear; and a final gear having a ring shape that is contained in the axle housing, meshes with the input gear, incorporates the differential casing, and is relatively unrotatably coupled to the differential casing.