A sliding member incudes a back-metal layer and a sliding layer made of a copper alloy. The back-metal layer is made of a hypoeutectoid steel including 0.07 to 0.35 mass % of carbon, and has a structure including a ferrite phase and pearlite. The back-metal layer includes a pore existing region including a plurality of closed pores having an average size of 1 to 10 μm. The pore existing region extends from the bonding surface toward an inner portion of the back-metal layer and having a thickness of 2 to 20 μm. At least a part of the plurality of closed pores has contour that is partially formed by the bonding surface in a cross-sectional view. A ratio V2/V1 of a total volume V2 of the closed pores to a volume V1 of the pore existing region is 0.02 to 0.08.

A lubricant supported electric motor includes a stator and a rotor and a drive hub. The rotor is moveable relative to the stator and a gap is defined between the rotor and the stator. A lubricant is disposed within the gap to support the rotor relative to the stator and provide a bearing mechanism. The drive hub is coupled to the rotor such that rotation of the rotor causes rotation of the drive hub. The drive hub may be connected to the rotor via a coupler member that is torsionally stiff and axially and radially compliant. The stator may be fixed relative to a connection structure that extends radially within the stator. The connection member may support the drive hub for rotation. Lubricant is supplied via a passageway extending through the connection member into a chamber that includes the gap.

A boot needle roller bearing is designed to reduce friction between a flexible boot non-rotatably attached to a differential housing and a rotatable half-shaft. A plurality of rollers is retained axially between a first lip formed in the outer ring and a set of protrusions that are formed after installation of the rollers by bending prongs inwardly. The inner ring is retained axially between the protrusions and a second lip formed into the outer ring after installation of the inner ring.

A gearshift assembly comprises a base and a shift lever having an overmoulded ball portion comprising a pattern of recesses having straight side walls. A socket is fixed in the base and shaped to receive the ball portion of the shift lever. The socket has a sidewall with an inner surface forming part of a sphere to provide a pivotal mounting for the ball portion for pivotal movement of the shift lever over a pivotal movement range. Vertical slots in the sidewall which have parallel vertical side edges that are open at their upper ends to allow a sidewall portion between adjacent vertical slots to elastically flex outwardly during insertion of the ball portion into the socket. The pattern of recesses of the ball portion is arranged such that all sidewalls are inclined with respect to side edges of the vertical slots over the pivotal movement range.

A planetary gear set includes a slide bearing shell arranged on a planet gear axle, a planet gear mounted rotatably on the slide bearing shell and a planet carrier having a recess for receiving the planet gear axle. An axial disk is mounted in a floating manner between a web of the planet carrier and the planet gear in an axial direction and configured flat on an axially outer side facing the web of the planet carrier. A lubricant film between the axial disk and the planet gear ensures during normal operation hydrodynamic operation between the planet gear and the axial disk. A deficient lubrication is present between the axially outer side of the axial disk and the web of the planet carrier.

A method of making a preloaded bearing arrangement and a preloaded bearing arrangement are provided. The method comprises the steps of placing a bearing around a shaft and then placing a frustoconical disc spring around the shaft such that a portion of the disc spring abuts the bearing. A deformable cup is placed around the shaft, and an annular section of the deformable cup is spaced apart from the frustoconical disc spring and the cup is held at a fixed position along the shaft. A split shim is inserted between the annular section of the deformable cup and the disc spring to apply a preload to the disc spring. The deformable cup is then deformed such that a sidewall of the deformable cup extends around the split shim to hold the split shim in place relative to the shaft.

Provided is a sliding member including: a back-metal layer and a sliding layer including a copper alloy. The back-metal layer includes a hypoeutectoid steel including 0.07 to 0.35 mass % of carbon and has a structure including a ferrite phase and pearlite. The back-metal layer has a high ferrite phase portion at a bonding surface between the back-metal layer and the sliding layer. A volume ratio Pc and a volume ratio Ps satisfy Ps/Pc0.4, where the volume ratio Pc is a volume ratio of pearlite in the structure at a center portion in a thickness direction of the back-metal layer, and the volume ratio Ps is a volume ratio of pearlite in the high ferrite phase portion.

A gas turbine engine comprising a gearbox, the gearbox having gear(s). A journal bearing assembly rotatably supports the gear, the journal bearing assembly having at least a pin, and a journal having a tubular body defining a pin-receiving inner cavity having an inner surface, a first cavity and a second cavity defined in the inner surface of the pin-receiving inner cavity, a rib support located between the first cavity and the second cavity, the rib support being aligned with a longitudinal center of the tubular body, with the first cavity and the second cavity on opposed axial sides of the rib support.

A park release mechanism for a vehicle, including an upper housing and an assembleable lower housing. A cam with a projecting handle is arranged between the upper and lower housings and defines a range of pivotal rotation relative the housings. A cable is secured at one end to the cam and adapted to secure at an opposite end to a transmission of the vehicle. An unlock component is incorporated into the housing in communication with the cam and handle and, upon actuating, to shift the vehicle to and from a Park position upon actuation of the handle and displacement of the cable.

In a pair of sliding parts having sliding faces S that slide with respect to each other, at least one of the sliding faces S has a one-side peripheral edge (4a) and an other-side peripheral edge (4b) and includes: fluid introduction grooves (12) each of which has one end communicating with the other-side peripheral edge (4b), dynamic pressure generation grooves (11) each of which has one end communicating with the other-side peripheral edge (4b) and the other end being surrounded by a land portion, and a release groove (13) provided in the land portion, the release groove (13) communicating with the fluid introduction grooves (12). With the sliding parts, not only a liquid such as oil but also an oil mist serving as a mixture of oil and air can be sealed as a sealed fluid, and generation of oil mist itself can be reduced.