Abstract: An electric generating device includes a motor having a spindle and a bevel gear, an electric generating mechanism having a pivot axle and another bevel gear, and a speed increasing device includes a flywheel and a bevel gear attached to a secondary shaft and engaged with the bevel gear of the motor spindle, another flywheel and two further bevel gears attached to a primary shaft and engaged with the bevel gears of the secondary shaft and the electric generating mechanism for increasing a momentum of the shafts and for increasing the driving speed of the electric generating mechanism and for decreasing the noise of the electric generating mechanism.

Abstract: A rotor gear mounting assembly for a generator includes a rotor shaft comprising a first end and a second end. Also included is a magnetic member arrangement operatively coupled to the rotor shaft proximate at least one of the first end and the second end. Further included is a hub portion of the magnetic member arrangement. Yet further included is a rotor gear operatively coupled to the hub portion.

Abstract: A geared motor has a rotor, a stator which surrounds the rotor, and a gear mechanism with gear wheels. According to the described system, the gear wheels of the gear mechanism are arranged at least partially within the rotor. The geared motor may be provided with a switched reluctance motor as the electric drive, such that it can be used in an optimum manner for driving electric vehicles.

Abstract: An object of the present invention is to maintain a predetermined positional relationship between an outer pin holder and a housing in a speed reducer section B, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, and to eliminate rattling noise caused by a housing and the outer pin holder. An elastic member is disposed on one or both axial end surfaces of the outer pin holder, between the outer pin holder and the housing. As a result, even if there is an axial load exerted on the outer pin holder, the outer pin holder is always held at a predetermined position by restoring force from the elastic member(s), in a proper positional relationship with the housing.

Abstract: A gear motor is provided with a motor, a decelerator, an output shaft of the decelerator coupled to a driven shaft of a driven machine, and a torque arm for preventing rotation of the gear motor around the driven shaft. One end of the torque arm is fixed to the gear motor and the other end is fixed to an installation seat. The torque arm is provided with a damper mechanism.

Abstract: In a starter for starting an on-vehicle engine, a solenoid is provided to push a pinion gear. The solenoid has an electromagnetic coil composed of a single coil and electrically separated from a motor circuit, a fixed core, and a plunger. Supply of excitation current to the electromagnetic coil allows the fixed core to be magnetized to attract the plunger. Hence, a movement of the plunger results in a push of the movable member toward the ring gear. A switch is provided in the circuit and has a contact, a movable core, and a switch coil functioning as an electromagnet attracting the movable core in response to supply of current to the switch coil. A movement of the movable core results in on/off switching operations of the switch. The switch is allowed to operate independently of the solenoid when both the switch and solenoid are controlled.

Abstract: A work output device is revealed. The work output device includes two motor rotors respectively arrange at two ends of a horizontal main rotating shaft. An outer transmission shaft of each motor rotor starts rotating after the power is turned on. The rotating outer transmission shaft drives the main rotating shaft to rotate in one direction through a speed change gear mechanism. The motor rotors are synchronously driven to rotate around the main rotating shaft and move from a lower position to a higher position. At the moment, the power is turned off and the motor rotors turn back from the higher position to the lower position with the help of gravity. Thus a cycle of repetitive up-and-down half circle rotation is completed. Moreover, the main rotating shaft drives a work output shaft to rotate by a torque controller.

Abstract: An electromotive furniture drive includes an electric motor, the rotational direction of which can be reversed, a motor controller, a manual control, a battery unit, and a mains power supply device. A speed-reducing transmission is connected downstream of the electric motor and a further transmission is connected downstream of each speed-reducing transmission and the battery unit has at least one battery. To enable simple, economical and easy installation, in particular in tight installation spaces, the furniture drive has a coupling device which includes a charging device for charging the at least one battery of the battery unit. The coupling device also has a reference device, which is connected to a charging device The furniture drive is especially suited for slatted bed frames and armchairs.

Abstract: A brush holder is placed between a yoke housing and a gear housing and includes a holder member and a base member. The holder member is installed to an opening of the yoke housing and holds a plurality of brushes. The base member is installed to the holder member and includes a connector configured to connect with an external connector to receive an electric power. An output side end part of the yoke housing has a flange portion, through which the gear housing is fixed to the yoke housing. The holder member includes a contact portion that contacts an opening end portion of the yoke housing in an axial direction of a rotatable shaft. The contact portion is axially spaced from the base member by an axial gap.

Abstract: A geared generator for an electric vehicle has a body, a gearing device, a hub device and an electromotor. The body has two mounting boards, a battery and a commutator connected to the battery. The gearing device is connected to the body and has a primary tube, a minor tube, a gear-up segment, an output shaft, a mounting jacket, a stator mount and a motor stator. The gear-up segment is rotatably mounted between the gear disks and has three transmission shafts, three planet gear wheels and multiple bearings. The hub device is mounted around the tubes between the mounting boards and has two hub disks and a hub ring. The hub ring has a spacing disk and two side rings. The electromotor is connected to the gearing device and has a base, a coil stator, an eccentric flywheel, a fan and a protecting hood.

Abstract: A disk armature generator for generating electrical energy from rotational energy of a wind power installation and comprising at least two stator components mutually offset axially along a generally horizontal rotation axis of the disk armature, and comprising, mounted therebetween so as to rotate about the rotation axis, at least one ring- or disk-shaped rotor component of the disk armature, and comprising an input-side connection for a gearbox wherein the sun gear thereof, which extends coaxially with the rotation axis of the disk armature, is coupled to at least one ring- or disk-shaped rotor component of the disk armature, wherein a rolling bearing associated with a ring- or disk-shaped rotor component of the disk armature is configured as a selected one of an angular contact ball bearing and angular contact ball bearings, having a contact angle of between 40° and 50° relative to the rotation axis, comprising a double-row angular contact ball bearing in an O arrangement.

Abstract: A rotary drive has a first body with a toothing system that runs along a first circular circumference about a first rotational axis, a second body with a toothing system that runs along a second circular circumference about the first rotational axis, and a converter with a first toothing system that runs along a circular circumference at a first spacing about a second rotational axis, and a second toothing system that runs coaxially with respect to the first toothing system along a circular circumference at a second spacing, and having at least two actuators with directions of action which are not parallel to one another, by which actuators the converter can be displaced in each case in one direction. The converter can be displaced by the two actuators such that the second rotational axis runs along a circular path around the first rotational axis.

Abstract: A direct drive threaded rod transmission mechanism is provided. The direct drive threaded rod transmission mechanism is characterized in that a part of the threaded rod is a part of the rotor section of a torque motor. Accordingly, the threaded rod is combined with the torque motor into an integrated body and the torque motor can directly drive the threaded rod. Therefore, the components are simplified and the volume is minified and the assembling and processing cost is lowered.

Abstract: An actuating drive includes an electric motor and a gearing arranged in a housing which is open on one side and which is closed by a cover. The electric motor is mounted in a recess bulge of the housing which is substantially sealed off from the gearing. The configuration provides a precise positioning of the electric motor relative to a first axle, wherein a first gear of the gearing is assigned to the same and wherein the actuating drive can be manufactured more simply and more cost-effectively than was previously possible. This is achieved in that the electric motor is attached indirectly to the housing by means of an accordingly shaped metal sheet, and is positioned in a predetermined location with no radial or axial play.

Abstract: In a small power generator 1, a rotary dial 31 is disposed in the middle of the surface. By turning the rotary dial 31 with a finger, a rotor of an inner rotor type power generation unit 6, which is disposed inside the small power generator 1, is rotated by the rotational force through at least one intermediate gear. As a result, electric power is generated to charge a power supply for a portable electronic apparatus. The small power generator 1 includes an intermediate gear in order to transmit the rotational force of the rotary dial 31 to a rotating unit 3, and at least one of the shafts of the intermediate gear is provided between a plurality of core windings 67 circularly disposed in a stator core 66 of the power generation unit 6. Thus, in the small power generator 1, the planar size is reduced by providing the shaft of the intermediate gear inside the stator core of the inner rotor type power generator.

Abstract: A brushless rotary actuator comprises a housing including a motor housing defining a cavity for a motor assembly and a cover defining a cavity for a gear assembly. The motor assembly includes a rotor and a stator with a plurality of bobbins. A clip in the form of a ring plate is seated against the bobbins for retaining the bobbins on the stator. Fingers formed on the ring plate are fitted into respective slots defined by respective bobbin terminals. A circuit board is seated in the housing against an interior shoulder of the motor housing. A plate is seated in the housing against a peripheral rim of the motor housing in a spaced relationship above the circuit board.

Abstract: In a motor, a motor case includes a first case and a second case separable from each other in a direction of an axis of a rotation shaft of a rotor. The first case and the second case each have cut-away portions extending parallel to the axis from a separation edge (open side edge) thereof. The separation edges of the first and second cases each have abutment portions not formed with the cut-away portions, and the abutment portions of the first case respectively abut against the abutment portions of the second case. The cut-away portions cooperatively define a plurality of windows disposed in a periphery of the motor case. The stator has a plurality of bulges projecting radially outward from a peripheral surface thereof in association with the windows.

Abstract: The adjusting drive for an adjustable part of a piece of furniture such as a hospital bed or nursing bed includes a housing, and a gear transmission arranged in the housing. The drive includes a rotatable drive element, a driven element, and a motor having a drive shaft for rotationally driving said drive element. The adjusting drive is further provided with a displacement sensor for detecting the position of said driven element. The drive element is arranged between two substantially opposite gears which are mechanically contacted by the drive element. The first gears is coupled to the driven element, and the second gear is coupled to said displacement sensor.

Abstract: An actuator arrangement having a rotational output includes a power input, a motor, at least an intermediate gear, a solenoid and an output. The power input connects to a source of electrical power. The motor has an output shaft including a worm gear. The motor is operably connected to the power input. The motor and output shaft are rotatably connected to a housing of the actuator. The output gear generates a rotational output at an axis thereof, and is operably coupled to be driven by the at least one intermediate gear. The solenoid is operably connected to the power input, and includes a piston member. The piston member has an actuated and a non-actuated position. The piston member in the actuated position urges the worm gear and the at least one intermediate gear into meshing connection.

Abstract: An electric actuator includes an electric motor, a gear deceleration device, a housing, and a motor attachment plate. The electric motor is configured to convert electric power into rotation output. The gear deceleration device is configured to decelerate the rotation output of the electric motor. The electric motor and the gear deceleration device are attached to the housing. The motor attachment plate is provided for the electric motor and is fixed to the housing. A first positioning hole, which is formed through the motor attachment plate, and a second positioning hole, which is provided for the housing coincide with each other in a state where the electric motor is attached to the housing.

Abstract: A drive device having an electric drive. A drive device (1) includes at least one housing (15), at least one electric drive, the electric drive having a rotor arrangement with a rotor shaft (7) which is designed for rotation about a rotational axis (17), and a bearing arrangement (14 a,b) for mounting the rotor arrangement. The bearing arrangement (14 a,b) supports the rotor arrangement in relation to the rotational axis (17) radially inwardly, the bearing arrangement (14a,b) supporting the rotor shaft in relation to a support section (15, 16) that is fixed to the housing.

Abstract: A modular electrical machine includes multiple integrated rotor modules releasably mounted upon a power transmission member to form a torus-like structure, wherein each integrated rotor module includes a series of parallel rotor plates spaced apart to provide an air gap between successive rotor plates in the series. The rotor plates hold permanent magnets securely within the air gap. Corresponding stator modules, each made of multiple air-cored coils potted in a resin material to form a blade. Each blade is externally supported with respect to the rotor module and is positioned between the permanent magnets within one of the air gaps between successive rotor plates.

Abstract: There is provided an actuator including a motor and a case adapted to house the motor. In the actuator, an output shaft of the motor is supported by a structured configured such that an elastic member is disposed between the case and at least one end of the output shaft, wherein the elastic member is in contact with a portion of the case in an engaging manner whereby the elastic member is prevented from shifting relative to the case in the rotation direction of the output shaft, and also wherein the elastic member is in contact with a portion of the motor in an engaging manner whereby a body of the motor is prevented from shifting relative to the elastic member in the rotation direction of the output shaft.

Abstract: The invention relates to an actuator for a flap for opening and closing an air passage in an air conditioner, ventilator, and/or heater, comprising a housing (1) shaped to accommodate a motor as well as a gearing arrangement. The actuator is characterized in that the housing (1) includes at least one abutment element (5) for limiting the movement of a rotational shaft (3) with respect to the casing of the motor, as well as a means (6) for compensating for a space between the abutment element (5) and a free end of the rotational shaft (3).

Abstract: An electromechanical device includes a central shaft; a rotor having a rotor magnet disposed along the periphery of the central shaft; a stator disposed on the periphery of the rotor; and a rotation mechanism connected to the rotor and used for transfer of a rotational driving force, wherein in the rotor, between the central shaft and the rotor magnet, a space which opens in at least one of an axial direction of the central shaft and houses at least part of the rotation mechanism is formed.

Abstract: An electric motor assembly includes a stator defining a first interior space, a rotor positioned within the first interior space and configured for rotation relative to the stator, the rotor defining a second interior space, and a planetary gear assembly associated with the rotor and at least partially positioned within the second interior space.

Abstract: An electromechanical device having a mechanical interface structure for connecting to an external rotating element, an electrical machine, and one or more gear stages on a mechanical power transmission path between the mechanical interface structure and a rotor of the electrical machine. The rotor of the electrical machine is supported by the frame of the gear stage directly connected to the rotor.

Abstract: A rotary electric starter machine including an electric motor, a housing surrounding the motor, and a pinion connected to the motor, at least one of the motor and the housing comprising a magnetically active portion of the machine, wherein the magnetically active motor portion is made of an enhanced performance steel material having a flux density at a given magnetizing force level that is at least about 20% less than the flux density at the given magnetic force level of a conventional low carbon steel material chosen from the group consisting of AISI 1008 and AISI 1010 steel.

Abstract: A rotary lamp holder comprises a housing having a first longitudinal end and a second longitudinal end, the first longitudinal having an opening, a motor stator disposed around the inner circumference of the housing, a rotating shaft and rotatably mounted in the housing, the rotating shaft defining a cavity in communication with the opening of the first longitudinal end, a motor rotor fixed to the rotating shaft and coaxially disposed with the motor stator, a lamp cover bracket rotatably mounted relative to the housing and extending out of the first longitudinal, and a reduction transmission system located in the housing and connected to the rotating shaft and the lamp cover bracket respectively. Since the rotary lamp holder is compact in structure and size and can completely match any standard lamp holder and lamp cover, it can become a universal substitute for the lamp holder mounted on ordinary lamps.

Abstract: A motor is provided, the motor including a housing, a stator mounted inside the housing, a rotor rotatably installed at a center of the stator by a rotation shaft, and a pulley rotating in association with the rotation shaft, wherein the pulley includes a belt gear coupled by a belt at a periphery, a flange formed at one side of the belt gear to have a diameter greater than that of the belt gear, and a relief groove formed between the belt gear and the flange to distance the belt gear from the flange.

Abstract: An object of the present invention is to prevent lubricant oil of a speed reduction unit from moving to an electric motor side and besides to prevent an eccentric load from acting on bearings supporting an input shaft. In a drive device for an electric vehicle including: a speed reduction unit including an input shaft driven by output of an electric motor; a hub unit rotationally driven by an output member of the speed reduction unit; and a housing accommodating the electric motor and the speed reduction unit, the configuration is made such that a partition for partitioning an accommodation section into respective accommodation spaces of the electric motor and the speed reduction unit is provided in the housing, and an oil seal member is placed between a peripheral edge portion of a center hole of the partition and a rotor support member the electric motor.

Abstract: The present structure does not require a knuckle on the vehicle body side, improves rotational accuracy of an input shaft of a speed reduction unit, increases durability of bearings, and suppresses rotation noise of the bearings by improving the supporting structure of the input shaft of the speed reduction unit. In a drive device for an electric vehicle comprising: a speed reduction unit including an input shaft driven by an electric motor; a hub unit rotationally driven by an output member of the speed reduction unit; and a housing accommodating the electric motor and the speed reduction unit, wherein the input shaft of the speed reduction unit is supported by bearings provided at two locations in the axial direction, the drive device is configured such that the bearings provided at the two locations are both supported by the output member, and the housing is provided with a suspension joining portion.

Abstract: Electric damper for damping the relative movement between first and second masses, comprising a generator driven by the mass movement and having a fixed stator and a rotor rotatable relative thereto, and a gear mechanism coupled to the generator, wherein at least one first gear element, directly connected to a lifting member (13) that is movable by the mass movement, is caused to rotate by the mass movement, which first gear element is dynamically coupled by direct or indirect transmission at least one further gear element, with the second gear element being dynamically coupled to the rotor (6) of the generator (2) such that the rotor (6) is caused to rotate in relation to the stator (5).

Abstract: Electric-motor auxiliary drive for vehicles, in particular screen-wiper drive, having an electric motor and a gear mechanism, having at least two housing elements which are connected to one another and having a shaft which is mounted in a first housing element by way of at least one first bearing and in a second housing element by way of at least one second and one third bearing.

Abstract: A housing is provided with a partition wall portion that partitions an inner space of the housing into an electric motor accommodating space and a speed reducer accommodating space. The partition wall portion fixes a gear that constitutes a speed reducer. In addition, the partition wall portion has a housing boss portion, and an inner stator is fixed to the housing boss portion. Thus, heat generated by the inner stator is dissipated to the outside through the housing boss portion and the partition wall portion.

Abstract: The invention relates to a rotary electric machine with an eccentric rotor that comprises a stator and an eccentric rotor, the stator including a plurality of magnetic poles circumferentially distributed in order to define a closed cylindrical space, the rotor having a generally cylindrical shape with a diameter lower than that of said closed space and including a plurality of magnetic poles circumferentially distributed, the rotor rotating inside the closed space, wherein the machine further includes a shaft depending on the rotational component of the rotor, said machine being characterized in that, at the area of electromagnetic interaction between the stator and the rotor, the evolute of a stator pole and the evolute of a rotor pole have substantially equal lengths.

Abstract: The invention relates to a converter system (1, 1?, 1?) for an electric vehicle and in particular a lightweight electric vehicle. The converter system (1, 1?, 1?) has a supporting housing (10, 10?, 10?) for connecting to the vehicle, has an electromechanical energy converter arranged at least partially in the supporting housing (10, 10?, 10?), said electromechanical energy converter having at least one stator (21, 21?) and a rotor (22, 22?) which is rotatable relative to the stator (21, 21?) about a drive axis (7, 40), and has a power transmitting device which connects the rotor (22, 22?) to a connection element.

Abstract: A first embodiment is an actuator arrangement having a rotational output and a motor. The actuator arrangement further includes at least one intermediate gear, an output gear, and an encoding detector. The motor has an output shaft that includes a worm gear. The output gear generates a rotational output at an axis thereof. Position encoding indicia are fixedly arranged on the output gear. The encoding detector is disposed in position to detect the position encoding indicia.

Abstract: A variable flux electric machine including a frame, an armature rotatably mounted within the frame, a first field having a plurality of windings that defines at least one wound pole fixedly mounted relative to the frame, a second field having at least one permanent magnet (PM) that defines at least one PM pole fixedly mounted relative to the frame, and a relay electrically coupled to the plurality of windings of the first field.

Abstract: An energy transforming apparatus has a controllable magnetic power gathering device and a transforming device to transform the non-continuous kinetic energy into electrical power to store in the power storage assembly. The controllable magnetic power gathering device has a non-continuous moved or linear reciprocating moved input end, a continuous rotating output end and a controllable energy-adjusting end, etc, to transform the impulse momentum into the continuous kinetic energy with the differential motion and using the non-contacting magnetic wheel transmission assembly to protect the overload effect. The transforming device has an energy transforming assembly, a circuit adjustment assembly and a power storage assembly. The circuit adjustment assembly is electrically connected with the energy transforming assembly to control the energy transforming assembly to transform the kinetic energy into electrical power.

Abstract: The present invention relates to an electrical actuating drive (1) for devices to be adjusted mechanically, having an electrical drive motor (2) and an output-drive shaft (4) which can be adjusted over a rotation actuating range of more than 360°, comprising an integrated contactless sensor angle measurement system (6) for determining and feeding back the respective rotation position of the output-drive shaft (4). The sensor angle measurement system (6) produces an output signal which largely simulates the characteristics of a conventional multiple potentiometer system.

Abstract: A multi-turn angle sensor includes rotors 60, 62, 64, each of which rotates in a different manner with respect to an input shaft 19, and a common stator portion 66. The rotors and pole teeth disposed around the rotors form each of resolvers 600, 620, 640. At least two of the resolvers are arranged on a single plane vertical to the rotation central axis of each of the rotors. The common stator portion 66 surrounding each of the rotors is formed by laminating electromagnetic steel sheets 106, each of which has an identical shape including a plurality of sets of pole teeth corresponding to each of the rotors. A single length of unspliced electrical wire is wound around each of the pole tooth sets. This facilitates automation of assembly.

Abstract: The invention describes a starter wherein the second front bearing is inserted axially between the armature windings and the speed reducer. This configuration helps solve the problem that the operating forces of known starter armature shafts are too great for the armature shaft guide ring to withstand long term intensive stresses. The structure includes a supporting section of the armature shaft received in the front bearing, the supporting section being of an outside diameter greater than or equal to the other sections of the armature shaft; the front bearing forms a sealed baffle between the armature windings and the planetary gear speed reducer; the electric motor is housed in a cylindrical frame, coaxial with the armature shaft, the front bearing being centered directly with respect to the frame by radial support against the internal cylindrical face of the front peripheral edge of the frame.

Abstract: The present invention relates to a linear actuator (1) comprising an outer tube (3) secured to a console and a rear mounting (5) and a front mounting (7) for mounting the linear actuator (1). The linear actuator (1) further comprises a motor housing (6) which constitutes a first part of an actuator housing (2) The linear actuator (1) further comprises an inner tube (4) which at its outermost end is secured to the front mounting (7) and with its other end is in connection with a spindle nut on a spindle. Through a transmission an electric motor causes the spindle to rotate at which the spindle nut and the inner tube will be moved in an outwards or inwards direction depending on the direction of rotation of the spindle. The spindle nut and the inner tube are guided telescopically in the outer tube. The spindle nut and the inner tube are secured against rotation in the outer tube.

Abstract: A motor drive device comprises a motor, a gearbox mounted to the motor and a control module. The gearbox comprises a gearbox housing that has an opening facing the motor. The motor has a shaft that extends into the gearbox housing through the opening to drive a worm gear of the gearbox. The control module has a PCB mounted to the gearbox and most of the PCB is accommodated in the opening of the gearbox housing. The PCB extends in a plane substantially parallel to the shaft.

Abstract: The present invention provides a driving apparatus including an axis member supported on a base, and a movable member movable along the axis member, comprising a plurality of plate members each including a through-hole through which the axis member penetrates and surrounding the axis member, wherein the plurality of plate members are located apart from each other in a moving direction of the movable member.

Abstract: This invention relates to a pump system, especially for boosting the flow rate of a fluid through a pipe (1, 2, 6), comprising a pump positioned in a pump chamber (10) for pumping at a chosen rate, and a motor driving said pump, the motor being positioned in a chamber (9) being provided with a pressurized fluid, the pressure of which being higher than the pressure in the pump chamber, the motor and the pump chambers being separated by a seal (8), the seal allowing a leakage of said pressurized fluid between them, wherein the pressurized fluid is acceptable to the pump environment and the system comprises a discharge branch line (3) coupled to the pipe(6) and positioned downstream from said pump, the discharge branch line having an outlet into the environment.

Abstract: In a reduction-transmission mechanism, an input member is arranged at such a position that a size obtained by adding a fitting clearance formed between a ball bearing and an outer periphery of an eccentric portion, a fitting clearance formed between the ball bearing and an inner periphery of the input member, which defines a center hole, and a radial internal clearance of the ball bearing is smaller than a size obtained by adding a fitting clearance formed between an outer periphery of each of a plurality of output members and a corresponding one of needle roller bearings, a fitting clearance formed between each of the needle roller bearings and an inner periphery of the input member, which defines a corresponding one of a plurality of pin insertion holes, and a radial internal clearance of each of the needle roller bearings.

Abstract: An actuator for an aircraft is provided. The actuator comprises a first motor, a second motor and an actuator output, which are interconnected by a gear assembly. The actuator output is driveable by the first motor independently of the second motor; the actuator output is driveable by the second motor independently of the first motor; and the actuator output is driveable by the first and second motors in combination.

Abstract: In one arrangement, a motor assembly includes a housing defining a housing chamber, a stator disposed within the housing chamber, and a rotor assembly disposed within the housing chamber. The rotor assembly includes a spindle housing defining a spindle housing chamber extending along a longitudinal axis of the spindle housing and a set of magnets disposed about an outer periphery of the spindle housing and in proximity to the stator. The rotor assembly includes a ball nut cartridge disposed within the spindle housing chamber of the spindle housing and a securing mechanism configured to secure the ball nut cartridge to the spindle housing.