Abstract:
In a composite plain thrust journal bearing is provided, in the inner rim of the thrust bearing part, at least one retaining lug (5) with which is associated at least one splay finger (6). In the rim area (7) of the journal bearing part are provided for the retaining lug a recess (13) and a recess (18) for a splay finger which is formed, at least in an end region, into a receiving slot (8), which is axially delimited by a hook-shaped projection (9). When the thrust bearing part (2) is positioned on the journal bearing part (1), the retaining lug (5) is engaged into the recess (13) and the splay finger into the recess (18) for a splay finger, and then the splay finger (6) is, under permanent deformation introduced into the receiving slot (8) behind the hook-shaped projection (9). This method of attachment offers defined limited mutual movability of the journal bearing part (3) and the thrust bearing part (2) while ensuring reliable connection of the two parts to each other. According to a further embodiment the splay fingers are arranged spaced from the retaining lugs and engage into their own recesses for splay fingers.
Abstract:
Iron oxide functions as a wear- and cavitation-inhibiting additive in the plastic sliding layer(s) of composite bearings for oil-lubricated applications. The sliding layers predominantly consist of thermoplastic fluoropolymers. The addition of iron oxide to PTFE-based materials reduces the destruction of the sliding surface owing to the appearance of cavitation if the materials are used in the presence of oil.
Abstract:
Plain bearing elements comprise at least one single-layer metallic bearing material (4) having a sliding surface (6) with lubricating oil pockets (10). The depth (T) of the open oil pockets (10) is 0.03 mm to 0.3 mm, and the ratio of the pocket area to the pocket depth is 10 to 40 mm. The plain bearing elements exhibit superior running qualities and properties. The depth of the oil pockets (10) may be adapted to the service viscosity of the lubricating oil. The oil pockets (10) in the same plain bearing element may also have varying depths (T) and be provided only in predetermined regions of the plain bearing element.
Abstract:
A sliding bearing material contains a matrix material and an antifriction material composed of at least one fluorinated plastic material and fillers. The antifriction material contains as fillers 5 to 48% by volume boron nitride and 2 to 45% by volume of at least one metal compound with a stratified structure, the proportion of fluorinated thermoplastic material amounting to at least 50 to 85% by volume. The fluorinated thermoplastic material is a PTFE or PTFE with additives; M.sub.o S.sub.2, tungsten, sulphide, titanium sulphide or titanium iodide may be used as metal compounds. The matrix material may be a sintered bronze into which the antifriction material is incorporated or a thermoplastic material in which the antifriction material is finely distributed. The proportion of plastic matrix material in the whole sliding bearing material lies at 60 to 95% by volume.
Abstract:
A plain bearing material includes a matrix of thermoplastic polymer which contains as inclusions additives improving antifriction properties. In the matrix are contained as additives PTFE and chalk, both PTFE and chalk being in the form of a powder. A composite multilayer material with such a plain bearing material includes a metallic backing on which a rough base is sintered or sprayed on. On this rough base is deposited the bearing metal material with a matrix material in which are included the additives.
Abstract:
A laminated composite material, and a method of improving the surface hardness of laminated composite materials, wherein selected regions of the carrier material of the laminated composite system are treated with high-energy beams, and the temperature control is designed in such a manner that the rays penetrate into a maximum a 0.1-fold the entire thickness of the carrier material. The temperature increase in the region of the sliding material is a maximum of 80% of the melting temperature of the lowest melting constituent of said material. The laminated composite material with a rear steel substrate surface can be post-hardened. The steel substrate has at least in one part of the surface facing away from the function layer a level of hardness increased by a factor of 1.5 or more than at a depth which corresponds substantially to 0.1-fold of the thickness of the steel substrate.
Abstract:
A sliding element has a bearing metallic layer made of aluminum or an aluminum alloy which bears on its side facing the sliding surface a galvanically produced tin layer bonded to the bearing metallic layer by a very thin alkaline, halogen-free layer of zinc, copper, nickel and iron immersion deposited on the bearing metallic layer. To produce such sliding element, a highly-alkaline immersion bath is used containing salts of zinc, nickel, copper and iron mainly cyanide-based. After the immersion treatment, the sliding element blank is rinsed with considerably carbonic acid-free deionized water. During a first tinning step, the sliding element is treated in a bath at a temperature between 20.degree. and 26.degree. C. with a current intensity from 2 to 3 amperes/dm.sup.2 and for a duration of exposure of at least one minute.
Abstract:
The invention relates to a wrapped bearing bush of elastic material as a bearing for a journal or a shaft for pressing into a housing bore. The invention also relates to a journal or shaft connection comprising a first and a second component, wherein the first component carries a bearing bush and the second component is connected to a journal or shaft mounted in the bearing bush.
Abstract:
A lacquer coating is applied to a laminated metal composite forming a sliding element such as a plane bearing and has particles of solid lubricants incorporated therein to form islets of greater thicknesses than the surrounding film and which serve as lubricant trapping surface formations.
Abstract:
The invention concerns a method of producing layered materials for sliding bearings and an electroplating bath for carrying out this method. According to the method, an electroplating bath with a non-ionic wetting agent and a benzene derivative is used for depositing a binary layer on a bronze layer on which the lead- or tin-based binary layer and a molybdenum-based initial layer are deposited galvanically in succession. When the binary layer has been deposited and before the initial layer is deposited, at least one surface layer of the binary layer is anodically activated. The layered material comprises a steel support shell (1) and a cast leaded bronze (2) to which an intermediate layer (13) is applied galvanically. When the layer (3) has been applied galvanically, the surface region (5) is altered by anodic activation, whereupon the molybdenum oxide layer (4) is applied galvanically.