Provided is a steam valve including a valve seat, a valve disc capable of contacting the valve seat, a valve rod connected or linked to the valve disc, a bush that slidably supports the valve rod, and an actuator that moves the valve disc via the valve rod, in which the valve rod has thereon a plurality of groves depressed to an inner side in a diametrical direction of the valve rod and a plurality of projections formed between the plurality of grooves, and each of the plurality of projections in an axial cross section of the valve rod is shaped so as to have one tip point.

An electromagnetic actuating device. The device includes an electromagnetic coil including a central recess extending in an axial direction, a cylindrical pole tube inserted into the central recess and provided with a magnetic separation point, an armature situated displaceably in the pole tube, the armature being movable by an actuation of the electromagnetic coil, the armature being mounted in the pole tube in a sleeve-shaped bearing foil inserted into the pole tube, the bearing foil including an inner side facing toward the armature and used as a sliding surface and an outer side facing toward the cylindrical pole tube. It is provided that the bearing foil is coated at least on the inner side using a first layer made of perfluoroalkoxy polymer. A manufacturing method for such an electromagnetic actuating device is also described.

A bearing system includes a first bearing, the first bearing being annular in shape and defining a ring aperture, the first bearing including a first surface and a second surface, a second bearing being substantially the same in construction to the first bearing, a first surface of the second bearing contacting a second surface of the first bearing, wherein each of the bearings is constructed of nylon MDS.

A shaft-bearing bush assembly for a valve arrangement for an air-conditioning system is disclosed. The shaft-bearing bush assembly includes a shaft drive-connectable to a valve of the valve arrangement and a bearing bush, in which the shaft is rotatably received relative to the bearing bush between a first rotary position and a second rotary position about an axis of rotation extending along the axial direction. A bush projection is non-rotatably arranged on the bearing bush relative to the bearing bush and a shaft projection is non-rotatably arranged on the shaft relative to the shaft. The bush projection and the shaft projection are matched to one another such that the bush projection provides a rotary stop for the shaft projection for limiting the rotary movement of the shaft between the first rotary position and the second rotary position.

A bearing system includes a first bearing, the first bearing being annular in shape and defining a ring aperture, the first bearing including a first surface and a second surface, a second bearing being substantially the same in construction to the first bearing, a first surface of the second bearing contacting a second surface of the first bearing, wherein each of the bearings is constructed of nylon MDS.

A surface of a bearing member on a flow passage forming chamber-side is disposed to be exposed to the chamber. The bearing member includes a contact part, with which a side surface of a butterfly valve that is opposed to the bearing member is in contact, on at least a part of the surface of the bearing member on the chamber-side. The bearing member is a radial ball bearing and includes an outer bearing ring that is fitted to an inner periphery of a shaft hole, so that its axial displacement relative to a body is restricted, an inner bearing ring that is fitted on an outer periphery of a rotation shaft radially inward of the outer bearing ring, and a rolling element disposed between the outer bearing ring and the inner bearing ring. The contact part is provided on a surface of the inner bearing ring on the chamber-side.

The invention concerns an operator assembly having a tubular housing extending along a central axis (X1) and a transmission mechanism arranged in an inner bore of the housing and extending along the central axis (X1). The transmission mechanism providing a screw with a threaded outer surface and a nut with a threaded inner surface. The nut is radially mounted around the screw and the inner thread is configured to cooperate with outer thread. The operator assembly further provides angular contact bearings that are radially arranged between the inner bore of the housing and an outer surface of the rotating nut to support in rotation and guide the nut within the housing. The angular contact bearings are axially adjacent and are disposed within an angular contact ball bearing and an angular contact roller bearing.

A rotary valve including a housing with a removable housing cover, a rotor within the housing which is at least partially placeable outside the housing by detaching and displacing the housing cover away from the housing so as to enable access for cleaning or inspection of the rotary valve, wherein an end portion of a shaft of the rotor is mounted in a bearing assembly supported by the housing cover, which bearing assembly comprises a first bearing and a second bearing that are adjustable in position so as to maintain the shaft of the rotor in a level orientation with reference to the housing when the housing cover is moved away from the housing, wherein the first bearing and the second bearing are movable with respect to each other in a direction transversely to a longitudinal direction of the shaft.

Provided is a sintered bearing, including Al, Cu, and Ni, the sintered bearing having Al—Cu—Ni alloy structures (3) sintered together. The Al—Cu—Ni alloy structures (3) each have an Al—Cu—Ni matrix phase (α-phase) and an Al—Ni compound phase (κ-phase), and are free of an Al—Cu compound phase (γ-phase).

A solenoid includes a coil configured to generate magnetic force when a current flows therethrough; a stator core provided inside the coil, the stator core being configured to be excited by the magnetic force of the coil; a plunger received in a plunger chamber formed inside the stator core, the plunger being configured to move toward an attraction part in the plunger chamber by the magnetic force of the coil; a shaft provided to be able to move, together with the plunger, along axial direction; and a filter provided inside the stator core. The filter is provided on a side of the attraction part from the plunger and in an axial range where the coil is provided.