A device for transferring a pressurized fluid from a stationary source into a rotating spindle shaft includes a stationary housing including an internal socket having a socket wall and a rotatable shaft extending into the socket. The shaft includes an outer surface and a shaft bore having inlet and outlet ends. The device includes a washer positioned over the shaft and including a first flat side surface and a second side surface having at least a portion angled with respect to the first flat side surface in operative contact with the socket wall. The device includes a bushing positioned over the shaft and including a bore having an inner surface spaced apart from the outer surface of the shaft by a gap. The bushing includes a first end surface proximate the inlet end and a second end surface in operative contact with the first flat side surface of the washer.

A sealing device to be provided in a bearing device for sealing an annular gap between an outer member and a flange. The sealing device includes a slinger attached to the flange by bolts press-fitted into a plurality of bolt holes provided at the flange. The slinger includes a main body portion in a hollow disk shape having insertion portions into which the bolts are inserted, an elastic seal being made of an elastic member and being integrally formed around the insertion portions of the main body portion, and a slinger cylindrical portion extending from an inner diametrical side end portion of the main body portion into axial direction and forming a first labyrinth by a gap between the slinger cylindrical portion and an outer circumferential face of the outer member.

An oil seal structure includes: a bearing unit for a shaft, being provided in a housing hole of a bearing housing; a damper positioned outside the bearing unit in a radial direction of the shaft to absorb vibration of the shaft; a seal body portion facing the damper through a gap in an axial direction of the shaft; a partition wall positioned between the damper and the seal body portion to divide the gap into a first space on the damper side and a second space on the seal body portion side; and a guide portion provided in the partition wall to be closer to an oil drain port than the shaft and having: an inner side in the radial direction of the shaft, being positioned on the first space side; and an outer side in the radial direction of the shaft, being positioned on the second space side.

A sprocket assembly includes a sprocket including a center orifice and a bearing located in the center orifice with an outer part of the bearing fixed in relation to the sprocket. The sprocket assembly also includes a dust cover fixed in relation to an inner part of the bearing. An outer cover diameter of the dust cover is bigger than an outer bearing diameter of the bearing, so that an outer periphery of the dust cover extends radially past the outer part. The sprocket also includes an impeller arranged at the outer periphery of the dust cover. The impeller is fixed in relation to the sprocket.

A rotating bicycle joint assembly includes a rotating joint part, a fixed joint part, and a bearing located between the rotating joint part and the fixed joint part. An outer part of the bearing is fixed in relation to one of the rotating joint part or the fixed joint part. An inner part of the bearing is fixed in relation to the other of the rotating joint part or the fixed joint part. A dust cover has an outer cover diameter that is bigger than an outer bearing diameter of the bearing, so that an outer periphery of the dust cover extends radially past the outer part. The rotating bicycle joint assembly also includes an impeller arranged at the outer periphery of the dust cover. The impeller is fixed in relation to the rotating joint part. The dust cover is fixed in relation to the inner part of the bearing.

A gas turbine engine sealing air system including a bearing chamber seal to prevent lubricant fluid loss from a fluid chamber, the sealing effected by ingress of sealing air. The system includes an air vent duct coupled to the bearing chamber seal. An ejector is located within the air vent duct to pump sealing air from the bearing chamber seal and through the air vent duct. A first duct is coupled between a starter air system of the gas turbine engine and the ejector to provide motive fluid to the ejector during gas turbine engine starting.

In an assembly method of a magnetic fluid seal (100) that includes a magnetic field forming member (130) divided in a circumferential direction, a magnetic pole member (120) including a pair of magnetic fluid retaining portions (121, 122) and a coupling portion (123) that couples them, a first bearing (160) and a second bearing (170), a step of fixing the first bearing (160) to a shaft (400) in a state in which the shaft (400) is directed in a vertical direction, a step of attaching the magnetic pole member (120) from above the first bearing (160), a step of fixing the second bearing (170) to the shaft (400) from above the magnetic pole member (120) to thereby fix the magnetic pole member (120) in a state in which the magnetic pole member (120) is positioned with respect to the shaft (400); and a step of attaching the magnetic field forming member (130) between the pair of magnetic fluid retaining portions (121, 122) are performed in order.

An oil seal structure includes: a bearing unit for a shaft, being provided in a housing hole of a bearing housing; a damper positioned outside the bearing unit in a radial direction of the shaft to absorb vibration of the shaft; a seal body portion facing the damper through a gap in an axial direction of the shaft; a partition wall positioned between the damper and the seal body portion to divide the gap into a first space on the damper side and a second space on the seal body portion side; and a guide portion provided in the partition wall to be closer to an oil drain port than the shaft and having: an inner side in the radial direction of the shaft, being positioned on the first space side; and an outer side in the radial direction of the shaft, being positioned on the second space side.

A motor which prevents the generation of noise from a bearing and prevents shortening of the life of the bearing while preventing the entry of foreign matter inside of a housing. The motor 10 includes a rotor 12, a stator 16, a bearing 20, a housing 18, a bearing support surface 60 arranged to be immovable relative to the housing 18 and surrounding an outer circumferential surface 58 of the bearing 20, a first groove 62 formed at the outer circumferential surface 58 of the bearing 20 or at the bearing support surface 60, and a second groove formed at the outer circumferential surface 58 of the bearing 20 or at the bearing support surface 60 to extend in a circumferential direction so as to intersect the first groove 62.

In an assembly method of a magnetic fluid seal (100) that includes a magnetic field forming member (130) divided in a circumferential direction, a magnetic pole member (120) including a pair of magnetic fluid retaining portions (121, 122) and a coupling portion (123) that couples them, a first bearing (160) and a second bearing (170), a step of fixing the first bearing (160) to a shaft (400) in a state in which the shaft (400) is directed in a vertical direction, a step of attaching the magnetic pole member (120) from above the first bearing (160), a step of fixing the second bearing (170) to the shaft (400) from above the magnetic pole member (120) to thereby fix the magnetic pole member (120) in a state in which the magnetic pole member (120) is positioned with respect to the shaft (400); and a step of attaching the magnetic field forming member (130) between the pair of magnetic fluid retaining portions (121, 122) are performed in order.