Abstract: Featured is a bedplate for a reciprocating engine having a rollerized cranktrain. Such a bedplate includes a peripheral support structure having sides and ends, a plurality of cross members that extend between the sides of the peripheral support structure, and a plurality of rolling element bearings. Each of the plurality of cross members includes a bearing support portion, the bearing support portion being configured so as to receive and retain therein a portion of one of the rolling element bearings. Also, the portion of the rolling element bearing is such that when the bedplate is secured to a cylinder block of the reciprocating engine, the bearing support portion rotatably supports a crankshaft of the reciprocating engine. Also featured is a reciprocating engine having such a bedplate.

Abstract: A connecting rod bearing is constituted of a pair of semi-cylindrical bearings I and II. In a state in which the semi-cylindrical bearings are assembled into a cylindrical shape, along two contact surfaces C of circumferential end surfaces, first axial oil grooves E are formed to be located at a central portion in a bearing width direction, and second axial oil grooves F are formed to be located at both sides in the bearing width direction of each of the first axial oil grooves E. One of the first axial oil grooves E and two of the second axial oil grooves F are in relation to communicate with each other. The first axial oil groove E is formed in the range of the wall thickness decreasing region surface A.

Abstract: Disclosed is a connecting rod bearing for a crankshaft of an internal combustion engine, the connecting rod bearing comprising a pair of semi-cylindrical bearings. In at least one of the semi-cylindrical bearings, a front side circumferential groove is formed from the front side circumferential end surface, and in the opposed semi-cylindrical bearing, a rear side circumferential groove is formed from the rear side circumferential end surface. A circumferential length of the front side circumferential groove is larger than a circumferential length of the front side crush relief, and a circumferential length of the rear side circumferential groove is smaller than a circumferential length of the rear side crush relief.

Abstract: Disclosed is a connecting rod bearing for a crankshaft of an internal combustion engine, the connecting rod bearing comprising a pair of semi-cylindrical bearings. In at least one of the semi-cylindrical bearings, a front side circumferential groove is formed from the front side circumferential end surface, and in the opposed semi-cylindrical bearing, a rear side circumferential groove is formed from the rear side circumferential end surface. In a communicating portion where the front side circumferential groove, the rear side circumferential groove, and the axial groove communicate with one another, a depth of the front side circumferential groove is larger than a depth of the rear side circumferential groove, whereby a step portion in a depth direction of the circumferential grooves is formed.

Abstract: A split-type sliding bearing for a crankshaft is formed of a pair of semi-cylindrical bearings halves which are fitted between a pair of housing halves having respectively high and low thermal expansion coefficients, one of the pair of bearing halves being supported on the housing half having a low thermal expansion coefficient, and the other of the pair of bearing halves being supported on the housing half having a high thermal expansion coefficient. The circumferential end zones of the bearing half supported on the housing half having a high thermal expansion coefficient have a thickness which is greater than that of the circumferential end zones of the bearing half supported on the housing half having a low thermal expansion coefficient.

Abstract: A thrust washer (14) in the form of a semi-circular flanged ring includes at least two radially inward-directed outer connection pieces (22) on the inner edge of the thrust washer (14) for the connection with a radial bearing part (12), which are located in the circumferential direction on both sides of a contrived centerline (M) of the thrust washer (14) and in each case have an inner edge (23) facing the center line (M) and an outer edge (23a) turned away from the centerline (M). The invention also relates to a radio axial bearing with a radial bearing part and a thrust washer of such a type connected with the radial bearing part. The inner edges (23) in each case include an angle (?), which is 45° and 85°, with a tangent on the inner side connected in the center of the connection piece (22) at the semi-circle described by the thrust washer (14), in which the outer edge (23a) runs parallel to the respective inner edge (23).

Abstract: A sliding bearing is constructed by an upper split bearing half and a lower split bearing half. The upper split bearing half has a sliding surface, in which an oil groove which allows a lubricating oil to flow therein is formed over the entire circumferential extent of the sliding surfaced. The oil groove extends through a crush relief to be open to a junction area, and the oil groove has a bottom which is formed so that a portion disposed toward the junction area as considered in the circumferential direction of the crush relief is located closer to the center of the upper split bearing half in comparison to a central portion. An ingress in large quantities of foreign particles within the oil groove onto the sliding surface of the sliding bearing and into a connecting rod bearing after passing through a lubricating oil feed passage is suppressed, and an oil leakage through the crush relief is reduced, allowing a lubricating oil pressure to be secured and augmented.

Abstract: A split-type sliding bearing for a crankshaft in an internal combustion engine is incorporated in a split-type bearing housing. The sliding bearing is formed of a first and a second semi-cylindrical bearing bodies combined to form a cylindrical body. The bearing housing has a cylindrical bearing retaining bore and is formed of a pair of housing halves. One of the housing halves has a lower stiffness, and the other has a higher stiffness. The first bearing body is held by the housing half having a lower stiffness. The second bearing body is held by the stiffer housing half. The first and second bearing bodies have equal outer diameters, and both of the circumferential end parts of the first bearing body have a larger thickness than those of the second bearing body prior to incorporation into the housing halves.

Abstract: A split-type sliding bearing for a crankshaft in an internal combustion engine fits within a bearing housing having a housing half with a higher thermal expansion coefficient, and a housing half with a lower thermal expansion coefficient. The pair of semi-cylindrical bearings includes first and second semi-cylindrical bearings, the first being supported on the housing half having a higher thermal expansion coefficient, and the second being supported on the housing half having a lower thermal expansion coefficient. The first and second semi-cylindrical bearings have equal outer diameter, and the first has circumferential ends having a thickness smaller than that of the opposite circumferential ends of the second semi-cylindrical bearing.

Abstract: A bearing component and bearing assembly are disclosed. The bearing component includes structure for providing a hard rotation stop, in one embodiment, the anti-rotation structure includes a slot formed in at least one bearing component having a surface for supporting a bearing shell. The slot has a longitudinal axis at an oblique angle to a plane perpendicular to the surface for supporting the bearing shell. In other embodiments, a groove extends radially outward from a surface of at least one component for supporting a bearing shell to a side of the component. The groove has a depth that increases as a function of distance in a direction parallel with a center axis of the component.

Abstract: A halved sliding bearing is provided, two of which are paired into a cylindrical shape. The halved sliding bearing includes a steel back metal, and a bearing alloy layer, which serves as a sliding surface, on the inside of the steel back metal. A coat layer of Bi or a Bi-based alloy is formed on the outside back surface of the steel back metal. Preferably, the coat layer consists of 1 to 30 mass % of one or more of Sn, Pb, In, Ag and Cu and the balance being Bi and inevitable impurities.

Abstract: A cam journal for attaching a camshaft to a cylinder head includes an upper portion and a lower portion. The upper portion and lower portion of the cam journal have a generally semi-circular bearing surfaces, chamfer regions, and circumferential beveled edges. The lower portions also include oil holes. The cam journal is removably attached to a cylinder head by first connecting multiple cam journal lower portions to the cylinder head, then positioning a camshaft on those lower portions. Upper portions are placed over the camshaft and are connected to the lower portions. A fastener is used to securely connect the cam journal to the cylinder head.

Abstract: A crankshaft support structure including a bushing which allows a bearing member to be held firmly on a crankcase, the bearing member supporting a crankshaft rotatably on the crankcase wherein the holding strength of the crankcase for the bushing needs to be increased. The crankcase needs to have a lighter weight and the thermal expansion of the crankcase needs to be prevented from affecting a bearing. An outer circumferential surface of the bushing which is insert-cast in the crankcase has a cylindrical shape, and many small protrusions each having a constricted portion are formed on the outer circumferential surface. Accordingly, the holding strength of the crankcase for the bushing is increased, allowing a small thickness of a bushing holding portion of the crankcase.

Abstract: An engine bearing shell with improved side load capability is disclosed. The engine bearing includes an upper bearing shell having a first single side relief portion. The engine bearing also includes a lower bearing shell having a second side relief portion. The upper bearing shell and the lower bearing shell may be assembled to form a cylindrical bore that is disposed therebetween. The first and second single side relief portions are configured to compensate for any offset shift that occurs at parting lines located between the assembled upper and lower bearing shells.

Abstract: A device encapsulates a main bearing of a crankshaft. The main bearing is supplied with oil via an oil supply groove. The device has a bearing seat for the main bearing and on its sides which face toward the crank webs of the crankshaft, has oil channels which are open in the direction of the main bearing and in the direction of the crankshaft webs. In the device, the oil channels are sealed off in the direction of the crankshaft webs by sealing disks which are fastened to the bearing seat.

Abstract: There is provided a slide bearing for a crankshaft of an internal combustion engine, having a pair of half bearings combined with each other to form the slide bearing, and a crush relief formed in each end portion region in a circumferential direction of an inner peripheral surface of each half bearing by reducing a bearing wall thickness over an entire width in an axial direction of the half bearing, wherein a relief depth RD which is a reduction amount of the bearing wall thickness of the crush relief is maximum at each end portion in the circumferential direction of the half bearing, and gradually decreases toward a center in the circumferential direction, and the relief depth RD is maximum in a center in an axial direction of the half bearing, and gradually decreases toward both end portions in the axial direction.

Abstract: A thrust bearing assembly includes an upper thrust bearing and a lower thrust bearing for an engine assembly of a vehicle and which, are preferably, identically configured. The thrust bearings each include an arcuate bearing shell with a concave inner surface and a convex outer surface, and each includes a pair of axially spaced flanges extending radially outwardly of the bearing shells. The flanges may be formed as one piece with the bearing shell, and one flange is thicker than the other flange. The thicker flanges are load bearing and preferably contoured, whereas the thinner flanges are not. The bearings are installed with the thick flange of each bearing matched radially opposite the thin flange of the companion bearing to minimize fatigue and failure normally attributed to repeated seating and unseating of bearing assemblies having flanges of equal thickness caused by changing bending loads imparted by a shaft.

Abstract: A lubrication system comprising a bore including an inlet for receiving lubrication, an outlet for distributing lubrication, and a inner passageway extending between the inlet and outlet is provided. The outlet may be provided with a wider opening than the passageway. The outlet may further include a groove having a radius of curvature, and defined by a pair of flat or curved sidewalls, and a pair of curved end walls each extending toward the inner passageway.

Abstract: A drivetrain for use with a power unit. The drivetrain may have a driving member, a driven member, and a sleeve disposed between the driving member and the driven member. The drivetrain may further have a first oil film bearing disposed between the sleeve and one of the driving member and the driven member.

Abstract: Bearing shell of a connecting rod which is located in the larger connecting rod eye in which the bearing shell is constituted by several thermally sprayed layers and the topmost material layer of the bearing shell is essentially constituted by an aluminum/bismuth alloy as well as a bearing shell of a connecting rod which is at least located in the larger connecting rod eye in which the entire bearing shell is essentially constituted by a thermally sprayed layer of aluminum/bismuth alloy and process for the fabrication of a bearing shell on a connecting rod eye with the steps mechanical roughening of the connecting rod surface in the region of the bearing, thermal coating onto the surface with a bearing metal or a bearing material to build up a bearing layer and thermal coating onto the bearing layer with an Al/Bi alloy to build up a sliding layer, as well as a process for the fabrication of a bearing shell on a connecting rod eye with the steps mechanical roughening of the connecting rod surface in the region

Abstract: A connecting rod bearing housing includes an attaching portion and a retaining portion releasably joined together. The attaching portion and the retaining portion are each provided with a pair of alignment bores respectively located on opposite sides of the transverse passageway. The alignment bores are registered with one another and partially intersect the transverse passageway. An alignment washer is held within each pair of registered, alignment bores and projects into the transverse passageway. A sleeve-like bearing is positioned within the transverse passageway and has notches for snugly receiving the alignment washers. The washers prevent the rotation of the bearing within the housing.

Abstract: An aircraft thrust bearing assembly utilizing a U-shaped bearing disposed over a portion of a thrust bearing shaft, both within a housing that is mounted to the front of an engine utilized for driving an aircraft propeller. The thrust bearing shaft rides in the U-shaped bearing, wherein the U-shaped bearing separates the thrust bearing shaft from the housing. The front of the thrust bearing shaft has a mounting plate for attachment of a propeller, the mounting plate being machined to be perpendicular to the rotational axis of the thrust bearing shaft. The rear of the thrust bearing shaft comprises an outer surface adapted to receive a gear press-fitted thereon and an aperture within the shaft that is dimensioned to fixedly receive therewithin an end portion of the crankshaft of the engine being selected for propulsion of the aircraft.

Abstract: A connecting rod assembly includes a first end and a second end having bore extending therethrough and adapted to be aligned with a piston pin bore and receive a piston pin. The second end further includes a terminal end and has a reduced width configuration. The reduced width configuration is formed by machining a pair of channels that are formed on opposite sides of the second end between each channel and the terminal end. The bushing includes at least partially annular grooves disposed on the contact surface along at least a portion of opposed distal ends, where the grooves substantially eliminate the need for the small end to undergo a deburring process after the second end is machined to provide a reduced width configuration.

Abstract: Disclosed is a plain bearing for internal combustion engines, in which a back metal layer is lined with a bearing alloy layer made of an aluminum-base bearing alloy which has a Vickers hardness (Hv) of from not less than 40 to not more than 160. The bearing alloy layer includes a lubricative surface layer which has a thickness of not more than 10 ?m and contains a solid lubricant. The maximum concentration of an element contained in the solid lubricant is not less than 5 mass %.

Abstract: A sigma-delta analog-to-digital converter may include a sigma-delta modulator and a decimation filter. The sigma-delta modulator may convert a first analog input signal into a first bit stream having a first pattern using sigma-delta modulation and convert a second analog input signal into a second bit stream having a second pattern using the sigma-delta modulation. The decimation filter may integrate the number of bits having a particular value in the first bit stream, output a first digital value, calculate a bitwise complement value of the first digital value, integrate the number of bits having the particular value in the second bit stream with the bitwise complement value of the first digital value as an initial value of a second digital value, and output the second digital value.

Abstract: Disclosed is a sliding bearing consisting of a pair of semi-cylindrical bearings for supporting a crankshaft or a crank pin in an internal combustion engine. The sliding bearing is incorporated in a split-type bearing housing. One of the semi-cylindrical bearings being incorporated in at least one of the pair of housing halves, which one housing half has a relatively higher stiffness, is provided with a number of circumferential grooves on an inner surface of the semi-cylindrical bearing so as to extend circumferentially along the inner surface of the semi-cylindrical bearing. The circumferential grooves existing at least one circumferential end region of the inner surface of the semi-cylindrical bearing have a depth of not less than 10 ?m, the circumferential end region including a circumferential bearing end face orientating a direction opposite to the rotation direction of the shaft or pin.

Abstract: A bearing mechanism for mounting a connecting rod to a crankshaft is disclosed. The bearing mechanism may include a first bearing half-shell forming a first semicylindrical member and a second bearing half-shell forming a second semicylindrical member. The second bearing half-shell may be assembled to the first bearing half-shell to form a cylindrical member. The cylindrical member may include an outer surface, an inner surface, and at least one end.

Abstract: A sliding bearing shell is described, comprising at least one holding cam (4) which is provided in the region of the dividing surface (2), projects beyond the back (3) of the shell and forms a deformation section of the sliding bearing shell (1) which extends over only a part of the thickness of the shell. In order to provide advantageous constructional conditions it is proposed that the deformation section consists of a tongue (5) which is cut out and bent out partly from the sliding bearing shell (1) through an indentation (6) starting from the dividing surface (2).

Abstract: A halved sliding bearing is provided, two of which are paired into a cylindrical shape. The halved sliding bearing includes a steel back metal, and a bearing alloy layer, which serves as a sliding surface, on the inside of the steel back metal. A coat layer of Bi or a Bi-based alloy is formed on the outside back surface of the steel back metal. Preferably, the coat layer consists of 1 to 30 mass % of one or more of Sn, Pb, In, Ag and Cu and the balance being Bi and inevitable impurities.

Abstract: A bearing shell assembly has a bearing of length B1 and having two bearing shell halves each having a width B2<B1/2 spaced from each other axially. An oil duct extending angularly of the bearing shell halves is formed between the bearing shell halves.

Abstract: To manufacture a connecting rod including positioning grooves having a function of positioning a bearing metal at low cost. A big end part of a split type connecting rod is fractured in two after inserting an approximately cylindrical die into a bearing hole. The die has projections corresponding to locking grooves on an outer circumferential surface thereof. The die includes a pair of split dies having tapered faces, each expanding an opening on an edge of an end face of each of the split die halves. The tapered faces are formed by partially notching mating surfaces by pressing the inner circumferential surface of the bearing hole with the projections by a movement of the pair of split dies in a radial direction of the bearing hole.

Abstract: A bearing mechanism for mounting a connecting rod to a crankshaft is disclosed. The bearing mechanism may include a first bearing half-shell forming a first semicylindrical member and a second bearing half-shell forming a second semicylindrical member. The second bearing half-shell may be assembled to the first bearing half-shell to form a cylindrical member. The cylindrical member may include an outer surface, an inner surface, and at least one end.

Abstract: A plain bearing capable of suppressing occurrence of bearing damage in a primary load portion is provided. The primary load portion in the center of at least one of the plain bearings that mainly receives load during rotation of a shaft is subjected to inner surface working by broaching so that roughness is 1 ?m Rz or less, while a light load portion at 10° to 60° from a bearing mating surface of the plain bearing that receives load smaller than that received by the primary load portion is subjected to inner surface working of a circumferential fine groove by boring so that the depth is 1 ?m to 15 ?m.

Abstract: A main bearing cap support structure is provided including a bulkhead and a main bearing cap removably mountable thereto by at least one threaded fastener. The threaded fastener includes a highly toleranced (i.e. controlled both dimensionally and geometrically) generally annular collar sufficiently configured to be received within a highly toleranced bore portion defined by the bulkhead and the main bearing cap such that the main bearing cap may be precisely aligned with the bulkhead.

Abstract: A plain bearing and method for making the same are shown and described. The plain bearing includes a layer of a strong backing material to which a first bearing alloy is bonded. A second layer of bearing material overlays the first bearing layer and comprises essentially pure tin without any other metallic alloying constituents and an organic levelling agent in the matrix thereof.

Abstract: The invention provides a motorcycle having a frame, an engine coupled to the frame, and a crankshaft assembly. The crankshaft assembly includes a first flywheel half having an aperture, a crank pin including a first end portion, a second end portion opposite the first end portion, and a bearing surface between the first and second end portions. The first end portion is press-fit into the aperture of the first flywheel half. The first end portion, the second end portion, and the bearing surface are coated with a friction enhancer. A bearing is positioned at least partially onto the bearing surface, and a connecting rod has an aperture that at least partially receives the bearing.

Abstract: Disclosed is a cylindrical sliding bearing consisting of an upper and a lower half bearings, which supports a crankshaft of an internal combustion engine. An oil groove is formed circumferentially on an inner surface of at least the upper half bearing. There are provided circumferential grooves formed by boring machining on the overall inner surfaces of the half bearings. Each of the circumferential grooves existing in circumferential both end regions has a larger cross-sectional area than the grooves existing in other regions receiving predominantly operational load when the crankshaft rotates. The upper half bearing is chamfered at a front inner end edge with respect to a rotational direction of the crankshaft supported by the sliding bearing, and the lower half bearing is also chamfered at an inner end edge adjacent to the above front inner end edge, an area of the respective chamfered portion being the same as the 0.15 mm to 0.4 mm length chamfer corner area.

Abstract: The invention relates to a composite antifriction bearing material for producing antifriction bearing elements, in particular antifriction bearing bushes and antifriction bearing half liners for engine applications, comprising a steel carrier layer and a copper-based, in particular copper-tin-based or copper-zinc-based bearing metal layer applied on top, and comprising an aluminum-based running layer sputtered onto the bearing metal layer; to improve the running-in behavior, applied to the sputtered-on running layer is an additional running-in layer, which is either a zinc-phosphate layer 1-5 ?m thick formed on the surface of the running layer or a layer of tin, bismuth, silver or alloys thereof 1-5 ?m thick sputtered onto the running layer, but softer than the latter, or a polymer-based antifriction coating less than 10 ?m thick.

Abstract: A shaft comprising functional elements, such as an assembled camshaft for an internal combustion engine, a method for producing such shafts, and internal combustion engines equipped with such shafts. The functional elements each have a bore and are produced separately from the shaft main body, and the bore is subsequently press fit onto the shaft body to attach the functional element in an axially and rotationally fixed manner. The shaft is also provided with at least one roller bearing that includes at least one undivided roller bearing element which is mounted on the shaft body between two functional elements, for example, by press fitting.

Abstract: A thrust bearing assembly includes an upper thrust bearing and a lower thrust bearing for use in an engine assembly of a vehicle and which, are preferably, identically configured. The upper and lower thrust bearings each include an arcuate bearing shell with a concave inner surface and a convex outer surface and each may be formed with a pair of axially spaced flanges extending radially outwardly of the bearing shells. The flanges may be formed as one piece with the bearing shell and the thickness of one of the flanges is greater than that of the other of the flanges. The thicker flanges are load bearing and preferably contoured, whereas the thinner flanges are not. The bearings are installed with the thick flange of each bearing matched radially opposite the thin flange of the companion bearing to minimize fatigue and failure normally attributed to repeated seating and unseating of the bearing assemblies having flanges of equal thickness caused by changing bending loads imparted by a shaft.

Abstract: Bearing device (1) with a first bearing part (2) and a second bearing part (3) which cooperate in bearing contact, wherein the first bearing part (2) and the second bearing part (3) is each provided with a surface layer (21, 31), wherein the hardness of the surface layer (21) of the first bearing part (2) is greater than the hardness of the surface layer (31) of the second bearing part (3).

Abstract: A reinforcement plate for a reciprocating engine that greatly reduces the elastic and plastic deformation of engine block components when the engine is run at high rpm and force is provided which reduces structural fatigue thereby increasing available horsepower. The one piece reinforcement plate ties together the main bearing caps to each other and to the engine block skirt, thereby increasing the rigidity of the main bearing caps and reducing the vibration of the engine. Crankshaft counterweight and crankshaft throw clearance openings, as well as other clearance areas, are provided in the reinforcement plate.

Abstract: A thrust bearing assembly includes an upper thrust bearing and a lower thrust bearing for use in an engine assembly of a vehicle and which, are preferably, identically configured. The upper and lower thrust bearings each include an arcuate bearing shell with a concave inner surface and a convex outer surface and each may be formed with a pair of axially spaced flanges extending radially outwardly of the bearing shells. The flanges may be formed as one piece with the bearing shell and the thickness of one of the flanges is greater than that of the other of the flanges. The thicker flanges are load bearing and preferably contoured, whereas the thinner flanges are not. The bearings are installed with the thick flange of each bearing matched radially opposite the thin flange of the companion bearing to minimize fatigue and failure normally attributed to repeated seating and unseating of the bearing assemblies having flanges of equal thickness caused by changing bending loads imparted by a shaft.

Abstract: Internal combustion engine with bearing shells, which are formed essentially by thermal sprayed bearing layers, wherein the thermal sprayed bearing layers are formed by at least two slide bearing materials with different hardness, which are spatially separated from each other and are provided on the outer surface of the bearing shell, as well as process for production of bearing shells for internal combustion engines including the steps: mechanical conditioning of the bearing surface coating of the bearing surface with the materials of the bearing shell by thermal spray processes finishing flattening processing of the applied layer wherein as bearing shell at least two slide bearing materials with different hardness were deposited separated spatially from each other, wherein the materials are in contact with each other via interlayers or joint layers.

Abstract: A bearing has an inner race that has separable inner sections. The inner race has an inner male protrusion and an inner female receptacle, and each inner male protrusion is mated with one of the inner female receptacles to form a unitary inner race. The bearing further has an outer race that has separable outer sections. The outer race has an outer male protrusion and an outer female receptacle, and each outer male protrusion is mated with one of the outer female receptacles to form a unitary outer race. Further, the bearing has a plurality of rollers situated within a channel formed by engaging the inner race and the outer race.

Abstract: A split type connecting rod has a simple structure that is capable of suppressing rotation of a metal bearing, and avoiding problems such as burning. The split type connecting rod 200 holds a crank-pin through a metal bearing 213 which has locking lugs 213c, 213d. A bearing locking groove 201h locks at least one of the locking lugs 213d when the metal bearing 213 rotates forward in the circumferential direction of a crank-pin hole 101d. A bearing locking groove 201i locks at least one of the locking lugs 213c when the metal bearing 213 rotates backward. The bearing locking grooves 201h, 201i are deviated from each other in the circumferential direction.

Abstract: A thrust bearing assembly includes upper and lower bearing halves for journaling a shaft therebetween. At least one thrust washer is arranged on the outer surface of at least one of the bearing halves and has ends which extend beyond and confront the ends of the bearing half on which the thrust washer is mounted to support it against rotational movement relative to the bearing half. A bearing half can have such thrust washers, in which case the other bearing half is narrower and is retained axially by the ends of the thrust washers of the opposing bearing half, or a thrust bearing can be provided on each of the bearing halves in axially opposed relation to one another.

Abstract: The subject invention provides a thrust bearing assembly having only three thrust flanges in total. One portion of the thrust bearing assembly comprises a main bearing having an arcuate bearing shell with a concave inner surface and a convex outer surface. A thrust washer having hydrodynamic features abuts one of the edges of the main bearing and extends radially outwardly from the outer surface thereof forming a thrust surface. The other of the edges of the main bearing is free of a flange. The free edge of the main bearing is preferably spaced inward from other thrust surfaces and the edge has a substantially narrower width than the other thrust surfaces.

Abstract: The invention relates to a collar bearing split shell, comprising a bearing shell and two thrust washers which are located on said bearing shell. The invention also relates to a collar bearing comprising two collar bearing split shells, each of which has a bearing shell, at least one bearing shell being provided with two thrust washers located on said bearing shell. The invention also relates to a thrust washer for a collar bearing split shell. The aim of the invention is to provide a collar bearing which ensures that the two collar bearing split shells of a collar bearing are essentially flush with each other when installed.

Abstract: A half bearing constituting a cylindrical plain bearing for supporting a shaft for rotation when two of the half bearings are combined together. The half bearing has two circumferential ends each of which has a plurality of circumferential grooves without formation of any crush relief surface. The grooves extend substantially over an overall circumferential dimension of the half bearing and include portions located at both circumferential ends of the half bearing respectively. Each portion has a larger axially sectional area than the grooves formed in a portion of the half bearing mainly subjected to load during rotation of the shaft.