Abstract: 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.

Abstract: A machine has a first member; a second member; a third member; a bearing having an inner race mounted to the second member and an outer race mounted to the third member; a damper chamber between the first member and the third member; a fluid outlet in the first member to the damper chamber; a fluid supply flowpath to the fluid outlet; and an unvented chamber open to and locally above the fluid supply flowpath.

Abstract: The invention is directed to a rolling bearing having at least one row of cylindrical rolling bodies for transmitting axial forces between two annular connection elements which are concentric to a common axis of rotation and which, for the purpose of rotation about the common axis of rotation, are spaced apart from one another by a gap, wherein the at least one row of cylindrical rolling bodies is so arranged that, in the unloaded state of the rolling bearing, the axes of rotation of all the cylindrical rolling bodies of the row lie in a common plane through which the common axis of rotation passes perpendicularly, wherein at least one raceway for the at least one row of cylindrical rolling bodies is in the form of a flat surface of a wire which has on its surface region complementary to the raceway surface an arcuate, convexly curved cross-sectional profile and is thereby inserted at least in some regions into a peripheral recess having a cross-sectional profile complementary thereto in an annular connection

Abstract: A ventilation fan includes a shaft assembly, a rotor, a motor housing, and a bearing housing. The shaft assembly defines a first port and a second port. The rotor has a rotor first portion disposed about a first portion of the shaft assembly and a rotor second portion that extends from the rotor first portion. The rotor first portion defines a rotor port. The motor housing is disposed about a second portion of the shaft assembly. The motor housing defines a housing port. The bearing housing is operatively connected to the motor housing. The bearing housing is disposed about a third portion of the shaft assembly.

Abstract: A squeeze film damper bearing device includes an annular space that is defined between an outer periphery of an outer race, an inner periphery of a bearing retaining member, and a pair of seal rings and forms a squeeze film, and an annular adjustment groove that is formed in the inner periphery of the bearing retaining member that is sandwiched by the pair of seal rings. A depth in a radial direction of the adjustment groove gradually decreases down to zero from a middle side in an axial direction of the adjustment groove in going toward at least one end side in the axial direction.

Abstract: Motion control apparatus (A) includes a direct coupled torque motor (54) slideably receiving an output (50) without other types of torque transmission devices between the output (50) and the motor (54) and between the output (50) and a pinion (7) in direct gearing engagement with an annular gear (44) connected to a second race (32) of a bearing (26) intermediate an annular mounting plate (38) and a dial plate (40). The second race (32) is a single, non-separable piece having L-shaped cross sections to define a mounting pilot for the annular gear (44). The motor (54) is secured to a mount plate (58) having an integral annular spacer (60) extending through a mounting tab (16) and secured to a mount ring (62) adjustably connected to the mounting tab (16) opposite to the mount plate (58).

Abstract: A rolling bearing is provided that includes an outer ring having a first portion which includes a first raceway and a second portion that includes a second raceway that has a larger diameter than the first raceway. An outer diameter of the first portion of the outer ring is less than an outer diameter of the second portion of the outer ring. The rolling bearing includes an inner ring having a first portion that includes a first raceway and a second portion that includes a second raceway that has a larger diameter than the first raceway. An inner diameter of the first portion of the inner ring is less than an inner diameter of the second portion of the inner ring.

Abstract: Embodiments of a combination bearing are provided, as are embodiments of a valve assembly including a combination bearing. In one embodiment, the valve assembly includes a flowbody having a flow passage therethrough, a drive shaft rotatably mounted within the flowbody, a valve element mounted to the drive shaft and positioned within the flow passage, and a combination bearing coupled between the flowbody and the drive shaft. The combination bearing comprises an integral radial load/thrust ring coupled to the drive shaft, and a thrust washer substantially adjacent the integral radial load/thrust ring, as taken along the longitudinal axis of the combination bearing. An outer radial ring circumscribes the integral thrust/radial load ring. A first plurality of rolling elements is captured between the thrust washer and the integral radial load/thrust ring, and a second plurality of rolling elements is captured between the outer radial ring and the integral radial load/thrust ring.

Abstract: An angular contact bearing is provided having an outer and inner bearing rings, and a plurality of ball rollers arranged between the bearing rings in two rows having a same reference circular diameter. The ball rollers in each row are held by a respective bearing cage. The ball rollers all have a same or different diameter and each of the ball rollers has two respective lateral faces arranged parallel to one another which are flattened symmetrically from a spherical basic shape and run with running faces in respective groove-shaped raceways defined in an inner face of the outer bearing ring and in an outer face of the inner bearing ring. The raceways have pressure angle axes pitched at a pressure angle with respect to a bearing radial axis. Adjacent ones of the ball rollers of the two rows are spaced apart to exclude mutual frictional contact. An assembly method is also provided.

Abstract: A slewing apparatus, comprising a slewing bearing means for the operation of a reel. A first slewing bearing (10) is configured to carry torsion and axial loads in the reel, while the second slewing bearing (20) is configured not to carry substantial torsion and axial loads in the reel. Thereby the second slewing bearing (20) functions as a back-up bearing for the reel, while the first slewing bearing (10) operates the reel and thus serves as the primary slewing bearing for the reel.

Abstract: A bearing device, for example in a turbomachine is provided. Between bearing races of the anti-friction bearings and a casing component positioned adjacent the bearing races is arranged a device for converting an axial force between the anti-friction bearings into a torque at the bearing races in the manner of a ball screw or planetary screw assembly. The bearing races are connected to one another by a feedback mechanism such that a torque at one bearing race can be converted into an opposite torque at the other bearing race.

Abstract: A bearing arrangement for supporting a rotatable shaft relative to a support structure. The bearing arrangement has a first bearing having radially inner and outer races, the inner race being rotatable relative to the outer race in use, and a second bearing arranged such that the first bearing is mounted to the support structure via the second bearing. The second bearing may allow for deflection of the shaft supported by the bearing arrangement.

Abstract: A vacuum pump (50) includes a pumping arrangement, a shaft (10) for driving the pumping arrangement, a motor (60) for rotating the shaft (10) and a bearing arrangement supporting the shaft (10) for rotation, the bearing arrangement having a rolling bearing (12), supporting a first portion of the shaft (10), and a thrust bearing (30). The thrust bearing (30) houses a plurality of rolling elements (36) such that they are maintained in bearing contact with an outer race (18) of the rolling bearing (12) and a race (34) of the thrust bearing (30). In this way axial movement of the rolling bearing (12) can be resisted whilst allowing radial movement of the rolling bearing (12).

Abstract: Bearing systems for high speed rotating shafts, such as turbocharger shafts, include a first ball bearing in one end of an elongated cylinder capable of carrying axial thrust in both directions and a second ball bearing in the opposite end of the elongated cylinder with its outer race slideably mounted in the cylinder against the biasing force of a preload spring. The second ball bearing is free to move axially with the shaft upon axial expansion of the shaft when exposed to high temperature. The inner races of the ball bearings are clamped to and rotate with the shaft as part of the rotating assembly.

Abstract: A locating bearing assembly (10) is provided that optimizes load distribution between bearing rows and for all rolling elements within the rows in either positive or negative torque conditions, by combining a single row tapered roller bearing with an angular contact ball bearing. The outer race (60) for the ball bearing is preloaded by a spring element (72) to prevent the balls (26) from floating freely between the ball bearing's inner and outer raceways (16, 64). This will insure that the balls (26) are always sufficiently loaded to roll along a single axis which is off set from the radial direction. The use of the single row tapered bearing and the preloaded angular contact ball bearing provides for a locating bearing assembly (“LBA”) in which the ball bearing supports only reversing axial loads. All radial loads are borne by the tapered roller bearing and transmitted to the bearing assembly housing (30).

Abstract: In a screw compressor for a refrigerator, suction-side rotor shafts of screw rotors are supported rotatably by angular ball bearings for forward thrust load, an annular gap is formed between the angular ball bearings and a suction-side bearing casing, and outermost end faces of outer rings of the angular ball bearings are pressed through a spring member by means of a presser member fixed to an end face of the suction-side bearing casing, whereby the angular ball bearings are held movably in the thrust direction within the suction-side bearing casing. Discharge-side rotor shafts of the screw rotors are supported rotatably by angular ball bearings for forward thrust load and an angular ball bearing for reverse thrust load which are held at predetermined certain positions within a discharge-side bearing casing. A screw compressor which permits structural simplification, reduction of size, and lightening of a maintenance burden is provided.

Abstract: A DC brushless motor comprises a stator; a casing; a rotor and a cover. The magnet and the enhancing plate are locked by studs other than using glue agent. A block on the lower surface of the enhancing plate is embedded into a central hole of the magnet so as to support the magnet and cause that the rotary shaft will not con tact the magnet directly. A cover is extended with an inner sleeve. A groove seat is installed with a lower bearing and the inner sleeve is installed with a middle bearing and an upper bearing. The bearings are installed with respective enhancing pads. The rotary shaft of the rotor is installed with an annular enhancing flange and an annular inner flange which resist against the upper bearing. The inner flange resists against the enhancing pads of the middle bearing.

Abstract: The closed end 11b of the Sleeve 11 and the shaft end 12b are made to be point-contacted through the ball 14. By this point contact, while allowing the sleeve 11 and the shaft 12 to rotate, the pressurization in the axial direction between the sleeve and the shaft can be received. Further, by giving this pressurization, the inner ring 13a of the bearing 13 is displaced toward the axial direction (downward in FIG. 1) interposing the ball 13b to absorb the play of the bearing 13. Accordingly, even though merely one bearing 13 is used, the sleeve 11 and the shaft 12 are prevented from being deflected, to obtain the pivot assembly 10 having a necessary rotation precision.

Abstract: An improved rotational mechanism, or roller assembly, including a central roof support, for use with a rotational building that is characterized by a movable vertical wall. The improved rotational mechanism was designed to prevent binding during rotation of the building, and to prevent or minimize lateral movement and tipping. The rotational mechanism comprises in part an angled member having a vertical leg and a horizontal leg, said horizontal leg projecting inwardly and mounted internally about the lower edge of the building wall. Cooperating with the angled member is an L-shaped angle member, where a radially projecting leg thereof includes at least one ball/transfer caster, preferably a plurality about the building foundation. In operation, the ball/transfer caster is in rolling contact with one horizontally disposed leg of the U-shaped channel. A comparable, laterally directed ball/transfer caster or conventional roller may also be incorporated into the mechanism.

Abstract: In order to prevent a reduction in fatigue life and to improve the endurance of a rolling bearing unit which is made up by assembling a pair of angular type ball bearings 4, 5 so as to rotatably support an axial load applied in a substantially constant direction, provided that a radial load F.sub.r and a leftwise axial load F.sub.a are applied to a rotating shaft 2 during running, the contact angle .alpha..sub.1 of the right hand side bearing 4 which takes the axial load F.sub.a is made large, while the contact angle .alpha..sub.2 of the left hand side bearing 5 which takes no axial load is made small, and the left hand side bearing 5 has a slight positive bearing gap during running.

Abstract: A Belleville spring/ball combination is utilized in a rotating anode target bearing assembly in an X-ray tube for thermal and electrical conduction as well as self-centering of the target shaft and noise reduction.

Abstract: A sealing and bearing arrangement in electric toothbrushes is characterized by a sealing ring (9) for preventing foreign material from penetrating into a bearing space, the ring being arranged around a nose pin (1) in the open end (7) of a casing (5), which coaxially surrounds the nose pin (1), and being immobile when the nose pin (1) rotates; an annular supporting plate (10) which is provided close to and inwardly of the sealing ring (9) and which is immobile when the nose pin (1) rotates; and bearing balls (11) provided in two races, one on each side of a thickened portion (4) of the central member of the nose pin (1), for taking up forces in all directions.

Abstract: A well drilling assembly including a drill bit projecting beyond the bottom of a hollow casing at the bottom of the hole. A fluid motor mounted in the casing has a rotary shaft to rotate the drill bit. The lower end of the rotary shaft is hollow to provide a central flow passage therein, and has an outer pressure diameter less than the inner diameter of said casing to provide an outer pressure passage therealong. Bearings are mounted in the outer passage to support the shaft against radial and axial displacement, and are engulfed in a body of lubricant confined between upper and lower floating seals which limit flow of drilling mud into the lubricant and flow of lubricant from the body into the drilling mud. A labyrinth provides a rotating orifice in the outer passage below the lower seals to maintain a pressure differential between the exterior of said drill bit and the lower seals.

Abstract: A motor-vehicle transmission has a housing extending along an axis and having axially spaced front and rear sides, a main input shaft centered on the axis and having a front end at the front housing side and a rear end spaced axially backward therefrom, a main output shaft centered on the axis and having a front end at the input-shaft rear end and a rear end at the rear housing side, and a secondary countershaft adjacent the input and output shafts and having front and rear ends respectively at the front and rear housing sides. A cylindrical-roller bearing supports the output-shaft front end on the input-shaft rear end for rotation therein and prevents relative radial movement but permits relative axial movement of the input-shaft rear end and output-shaft front end. Roller-type axial-thrust bearings support the input-shaft front end, the output-shaft rear end, and one of the ends of the countershaft on the housing.

Abstract: A conversion apparatus for use in combination with a chain saw is set forth wherein a housing includes a rotatable shaft for attachment of a left-hand helical flight ice auger wherein the shaft includes a plurality of bearings secured within either side of the housing with the shaft extending through the housing and formed with a sprocket housing for mating engagement with the chain saw sprocket. A depending extension of the housing includes a plurality of through extending apertures for accepting a plurality of spaced threaded connectors associated with a chain saw.

Abstract: A bearing device for a spindle (12), rotatably suspended in a frame (1), comprises a first bearing (4) arranged to transfer radial forces from the spindle to the frame while permitting a certain inclination of the spindle in relation to its intended rotational axis (A), and a second bearing (3) arranged to transfer axial forces from the spindle to the frame. For avoiding mutual inclination of the bearing rings of the axial bearing (3) upon inclination of the spindle during its operation, said axial bearing (3) is arranged to transfer the axial forces through two abutting contact surfaces movable relative to each other, one of which is united with the rotatable bearing ring (13) of the axial bearing, and the other of which is united with the spindle (12).

Abstract: In a suspension device for a rotatable spindle (1) comprising a bearing housing which encloses two closely adjacent bearings--one radial bearing (3) and one axial bearing (4)--the bearing housing is divided in two parts (7, 8) each enclosing one of the two bearings (3, 4). First spring means (13, 14) are arranged between the frame and the bearing housing part (7) for the radial bearing (3), and second spring means (16) are arranged between the frame and the bearing housing part (8) for the axial bearing (4). The bearing housing parts (7, 8) are free to perform angular movements relative to each other around axes perpendicular to the spindle (1) but engage with each other so that they are prevented from moving relative to each other in the peripheral direction of the spindle.

Abstract: A pedestal crane mounting system utilizes a spherical thrust bearing, for vertically supporting the crane gantry on the pedestal, and a spherical radial bearing, for eliminating radial loading on the thrust bearing. The upper race of the spherical thrust bearing and the outer race of the spherical radial bearing have common points of origin for the generatrices defining the race guide surfaces. The thrust and radial bearings are carried in a cartridge which mounts in a yoke connectable to a crane gantry by support pins at first and second points of attachment. Disposition of the bearing cartridge in the yoke is such that the centerline of the support pins coincides with the centerline of the spherical radial bearing. The bearing cartridge is fitted onto a vertical shaft fixed in the upper end of the pedestal.

Abstract: A three wheel air cycle cooling machine has its fan positioned between its turbine and compressor on a common drive shaft, and utilizes pressurized turbine inlet air to lubricate the shaft's journal and thrust bearings.

Abstract: A caster which includes a neck at its top portion and a support at its lower portion to which a wheel is rotatably connected. About the neck are a ball bearing retaining plate and a top plate above and releasably secured to the ball bearing retaining plate. Within the plates and about the neck is a completely enclosed raceway which encapsulates thrust ball bearings. The top plate can readily be removed from the ball bearing plate to permit inspection, cleaning, modification, repair and replacement of components of the casters.

Abstract: A thrust bearing assembly is provided which reduces initial axial loading on a shaft's thrust bearing in order to correspondingly reduce the required torque for rotational start-up. The shaft's bearing runner is forced in a direction away from its associated thrust bearing during initial start-up procedures by a suitable means for imparting a force on the bearing runner in a direction away from the thrust bearing. The force is provided by a piston and cylinder combination, in the preferred embodiment, which provides an axial force in a direction opposing the initial shaft loading force. An anti-friction guide bearing is used to transfer this force from the piston to the shaft and, in turn, to the bearing runner.