The present disclosure discloses a magnetic liquid sealing device adapted to axial and radial displacements of connection, which includes: an end cover; a rubber-sealing-ring equipped first clamping plate fixed on the end cover by a first screw and a second screw; a rubber-sealing-ring equipped second clamping plate installed in a groove of the end cover; a fundamental sealing structure fixed on the rubber-sealing-ring equipped second clamping plate by a third screw and a fourth screw, so as to be isolated from the end cover by the rubber-sealing-ring equipped first clamping plate and the rubber-sealing-ring equipped second clamping plate. The device isolates the connected component from the magnetic liquid sealing structure by the two clamping plates, such that the axial and radial deformations and displacements of the connected component will not be loaded on parts in magnetic liquid sealing structure, prolonging the service life of the magnetic liquid sealing.

A radial fan (1) is provided with a motor (2) and a fan housing, an outer part (4) and an inner part (5) that form a spiral-like pressure chamber (D). A pressure connector (33) which forms an outlet (44) of the radial fan (1) is arranged on the outer part. The fan housing is equipped with a fan wheel (3) which is arranged on a shaft (7) connected to the motor (2), wherein an annular flow divider (8) which surrounds the fan wheel (3) is arranged adjacently to the fan wheel (3) in a radial direction. The flow divider together with the fan housing forming a diffuser (9), which transitions directly into the pressure chamber (D), about the fan wheel (3).

A bicycle bearing system comprising: an integrated cup, the integrated cup having a non-flanged outer diameter; a plurality of rolling elements configured to abut and rotate against an inner surface of the cup race; an inner race configured to abut and rotate about the plurality of rolling elements, the inner race having an inner diameter; wherein the rolling elements do not have a separate outer race, but rather the inner surface of the integrated cup acts as the outer race to the rolling elements; wherein the rolling elements' sizes are maximized to the limitation that the non-flanged outer diameter is smaller or equal to a first maximum diameter, and wherein the rolling elements sizes are maximized to the limitation that the inner diameter is greater or equal to a first minimum diameter.

A coupling arrangement for coupling a driving means, typically a motor, to a hollow rotor and stationary shaft combination, which arrangement includes a rotor having a working formation and hollow cylindrical member extending axially from a shoulder formation (not shown) at one end of the working formation, the member provided with a thread (not shown) on its outside, which, in use is threaded into a complementary cylindrical hollow part of the motor and wherein the threads have a tightening direction which is the same as the direction of the motor, such that in use, when the motor drives the member, the member is tightened onto the rotor.

A prime mover includes a stator that is provided in a housing and a rotor that is provided rotatably relative to the stator, and is capable of outputting a torque from the rotor by being supplied with electric power. A bearing portion includes multiple bearing rolling bodies that roll in a circumferential direction of the rotor and rotatably support the rotor, and a lubricant that lubricates a periphery of the bearing rolling bodies. One bearing portion that rotatably supports the rotor is provided. A speed reducer includes an input unit that is provided rotatably integrally with and coaxially with the rotor and that receives the torque from the rotor.

A screw compressor element may have a housing; a cylinder bearing including an inner ring, an outer ring, a raceway, and a cylindrical rolling element that contacts the inner ring and the outer ring at a location of the raceway thereof; and a ball bearing including an inner ring, an outer ring, a raceway, and a ball shaped rolling element that contacts the inner ring and the outer ring at a location of the raceway thereof, wherein a rotor is rotatably arranged by way of the cylinder bearing and the ball bearing.

A wheel unit for an electric vehicle with a disengageable drive includes a wheel support, a wheel hub rotatably supported by the wheel support, and a wheel pin carried by a member driven by the electric motor and rotatably mounted within the wheel hub, by means of two rolling bearings. A coupling device connects in a releasable way the driven member to the wheel hub. The two rolling bearings that support in rotation the wheel pin have respective outer rings mounted by interference fit within a cylindrical wall of a central opening of the wheel hub, and respective inner rings rigidly connected together by means of a spacer sleeve having a predetermined length. The wheel-hub unit with the two rolling bearings and the spacer sleeve can be assembled before being mounted on the wheel pin.

An axle assembly with a housing, an annular gear, a bearing, a differential, and a pair of output shafts. The housing has an annular hub. The annular gear is received in the housing. The bearing, which is a four-point angular contact bearing, supports the gear for rotation about an axis relative to the housing and has an inner bearing race, which is mounted on the annular hub, and an outer bearing race that is fixedly coupled to the annular gear. The differential is received in the housing and includes an input member, which is coupled to the annular gear for rotation therewith, and a pair of output members that are rotatable relative to the input member about the output axis. Each of the output shafts is coupled to an associated one of the output members for rotation therewith. One of the output shafts extends through the annular hub.

A rolling bearing for mounting a driving worm of a power-assisted steering system of a vehicle includes a rotatable inner ring and a rotationally fixed outer ring. Rolling elements arranged between the inner and outer ring are guided by a channel-shaped first raceway arranged on a radially outer side of the inner ring and by a channel-shaped second raceway arranged on a radially inner side of the outer ring. The second raceway includes a cross-sectional profile that varies around its circumference. The cross-sectional profile allows laterally offset rolling elements to roll and thus tilting of the inner ring about a tilting axis orthogonal to the axis of rotation of the rolling bearing if the tilting axis assumes a predetermined tilted position in the circumferential direction of the second raceway and limits tilting of the inner ring to a minimum when the tilting axis is angled 90° to the tilted position.

A steering gear for a steering system of a motor vehicle includes a casing, a toothed gear, a pinion that meshes with the toothed gear, and a pinion shaft that comprises the pinion. The pinion shaft is mounted in a fixed bearing which comprises a rotary bearing in which the pinion shaft is received and which is received in a plastic bearing sleeve. The fixed bearing includes a pivot ring, which has outer and inner rings that are pivotably connected via one or more torsion webs. The torsion webs each extend through an opening in the bearing sleeve. The opening is defined by delimiting surfaces in which at least one of those delimiting surfaces is configured to prevent mechanical overloading of the plastic in the region of said delimiting surfaces as a result of contact with the torsion webs that are functionally deformed during the operation of the steering gear.