Abstract:
A thrust sliding bearing (1), comprising an upper annular body (10) having an annular surface (2) and a lower annular body (20) overlapped with the upper annular body (10) so as to be rotated around the axis (O) thereof and having an annular surface (3) facing the annular surface (2) of the upper annular body (10), wherein the annular surfaces (2, 3) of both annular bodies (10, 20) are made of synthetic resin, one annular surface is formed flat and a closed recessed portion (9) surrounded by a projection is formed in the outer annular surface, and fluid (8) is filled in the closed recessed portion (9).
Abstract:
An enhanced bearing system (10) for turbochargers incorporates a thrust collar (34) centrally mounted on the rotating shaft (22) interconnecting the turbine (20) and compressor (24) and a thrust bearing (52) centrally located within the center housing to constrain the thrust collar. Central placement of the thrust collar allows journal bearings (409 and journal seals (62) to be placed immediately adjacent the turbine and compressor wheel attachment points of the shaft enhancing the shaft motion characteristics and sealing capability.
Abstract:
A bearing device, wherein an arm boss (12) is connected rotatably to a bracket (13) through a connection pin (16), a sliding plate (19) is installed in a clearance between the arm boss (12) and the bracket (13), the sliding plate (19) is formed of a synthetic resin material such as ester-base urethane as an annular flat plate with a tensile strength of 35 to 270 Mpa, and both surfaces of the sliding plate (19) in the state of being assembled between the arm boss (12) and the bracket (13) come in contact slidably with the end surface (13B) of the arm boss (12) and the end surface (13B) of the bracket (13), whereby, even if a compressive load acts on the sliding plate (19), the durability and service life of the sliding plate (19) can be increased and the service life thereof can be extended.
Abstract:
The invention relates to a buffer disk (16, 17, 20) of a planetary drive which is provided with a lubricating groove (12, 18, 22) in order to prevent breakage of the oil film and insufficient lubrication.
Abstract:
Fluid thrust bearing containing moving magnet indicating instrument (10) includes a bobbin (12) and transparent lens (14) through which pointer (16) and dial (18) can be viewed. Pointer (16) is mounted to end of shaft (20) having axis of revolution (28) and attached to rotor (30) in bore (34). The rotor (30) is disposed in close-fitting walled cavity (26) so as to define a small substantially air excluded damping fluid filled gap (32) therebetween. Shown near detail arrows (1A) are excess fluid containing reservoir (33) formed by raised torroidal ridges (36, 38). Indicator (10) contains two pairs of field coils (22.1, 22.2, 24.1, 24.2). Adhesion and cohesion help maintain the rotor (30) in cavity (26). The substantial air exclusion helps prevent rotor (30) from moving axially out of cavity (26). A method of assembling to create such conditions therein is also set forth.
Abstract:
In a turbocharger shaft bearing system, a thrust bearing (11) is provided inboard of the compressor end shaft bearing (13). Removable parts of the turbocharger housing permit assembly of a first thrust bearing part (40) with an outwardly extending flange (40a) forming at least one thrust bearing interface to be fastened to the rotating shaft (12) for rotation therewith and a separate stationary thrust bearing part (42) to be carried by the housing, providing thrust bearing interface for the thrust bearing interface of the rotating first thrust bearing part inboard of the compressor end of shaft bearing. The removable parts can include a separate supporting member (27) for the compressor end shaft bearing. The remainder of the turbocharger housing supports the second shaft bearing (14) adjacent its turbine end and, through the separate bearing supporting member, the first shaft bearing.
Abstract:
A universal joint bearing assembly (20) incorporates an inventive thrust washer (30) molded from plastic. The plastic thrust washer (30) eliminates the metal galling and metal debris that have been found in prior art universal joint bearings. A support notch (38) is formed at radially outer surfaces to support an inner end (40) of needle bearings (28). Resilient members (34) bias the notch (38) against the needle bearings (28) such that the needle bearings (28) are supported on the notch (38) and against a seal (26) at the outer end (42) of the bearing cup (22). The resilient members (34) are compressed when the universal joint is assembled such that the needle bearings (28) operate properly. A central dome extension (36) on the thrust washer (30) insures that the thrust washer (30) is not improperly mounted within the bearing cup (22). An outer face of the thrust washer (30) is formed at an angle (A) such that central portion (50) extend further towards the trunnion (24) than radially outer portions. In a method of assembling a bearing according to the present invention, the thrust washer (30) is initially placed within a bearing cup (22) and the needle bearings (28) are then mounted within the bearing cup (22) as is the seal (26). The thrust washer (30) biases the needle bearings (28) such that they are supported between the thrust washer (30) and a seal (26). The bearing may then be shipped. When the universal joint is finally assembled, the trunnion (24) compresses the resilient members (34). At that time, the needle bearings (28) are free to move axially and the universal joint will operate properly.
Abstract:
In a two cycle internal combustion engine (2), the sidefaces (60, 62) of the connecting rod (40) have grooves (64) formed therein dragging lubricant from the fuel-air-lubricant mixture in the crankcase (8) along the crankfaces (38, 40) of the crankarm discs (34, 36) of the crankshaft (24), providing a hydrodynamic bearing with a layer of lubricant separating the sidefaces of the connecting rod from the crankfaces of the crankarm discs such that the sidefaces of the connecting rod ride on a layer of lubricant, and eliminating the need to silver plate the sidefaces of the connecting rod.
Abstract:
A unitary sleeve (11) mounts both thrust and radial bearings, the radial bearing (13) being fabricated of macro-crystalline tungsten carbide powder and cemented tungsten carbide cobalt chips in a recessed area (14) on an elongated extension (15) and the thrust bearing comprising a ring (27) carrying diamond inserts (29) residing in through holes (28), the ring (27) and inserts (29), being brazed on a hub (18) at the thrust head end (17) of the extension (15).
Abstract:
A keeper assembly (10) includes a keep (46) having a central axis (18), a pair of end surfaces (48), a planar side surface (60) for receiving force from a first member (32), and a convex side surface (64) facing away from the planar side surface (60) for transferring the force obliquely into a second member (16). The keeper assembly (10) can be used in a track joint (14), and is directed to overcome shear failure problems occuring when it is necessary to locate a keeper groove close to the end of a member because of space limitations or the like.