Abstract:
A low-friction sliding material comprising a sliding member having a sliding surface, and a fluorine fiber or a fluorine fiber-containing composite fiber that is disposed in parallel at least on the outermost part of the sliding surface in a direction substantially the same as a sliding direction and covers 60% or more of the sliding surface. The present invention provides a low-friction sliding material that is free from the occurrence of fabric separation or other defects in an extremely easy manner as compared to the conventional art.
Abstract:
A semicircular tube-shaped bearing (11) has a bearing main body 111 that is formed from a resin, has a semicircular tube shape, and has an inner circumferential surface (112) that slides over an opposing shaft and an outer circumferential surface (113) that comes into contact with a housing. The semicircular tube-shaped bearing (11) may have a structure in which multiple resin layers are laminated in a direction of radiation from the axial center. In this case, the bearing main body (111) has a first layer (1111) that includes the outer circumferential surface (113) and a second layer (1112) that includes the inner circumferential surface (112). The first layer (1111) is formed from a thermosetting resin. The first layer (1111) may include fiber reinforced resin in which fibers are mixed with a thermosetting resin. The second layer (1112) is formed from a thermoplastic resin. The second layer (1112) may include fiber reinforced resin in which fibers are mixed with a thermoplastic resin.
Abstract:
The present invention addresses the problem of providing a thrust sliding bearing capable of reducing frictional resistance. Provided is a crank washer (10) for supporting a load exerted in the thrust direction of a crankshaft, wherein an oil groove (16) is radially formed in a thrust receiving surface, a first resin sheet (11), a second resin sheet (12), and a third resin sheet (13) are laminated in a tapered land region TP partitioned by the oil groove (16), and the widths of the laminated first resin sheet (11), second resin sheet (12), and third resin sheet (13) in the circumferential direction gradually decrease in the direction toward the top layer.
Abstract:
It is an object of the present invention to provide a sliding member, a rolling bearing, and a cage each having a sliding surface excellent in a sliding property thereof even in the presence of lubricating oil and under conditions of a high sliding speed and a high contact pressure. The sliding member is used under an oil lubrication environment and has a sliding layer formed on an iron-based metal material. The sliding layer consists of a foundation layer including heat-resistant resin and a first fluororesin layer both formed on a surface of the iron-based metal material. A second fluororesin layer is formed on a surface of the foundation layer. After the foundation layer and the second fluororesin layer are calcined, the second fluororesin layer is irradiated with radiation rays. The heat-resistant resin does not thermally decompose when the foundation layer and the second fluororesin layer are calcined. The second fluororesin layer is irradiated with the radiation rays in a condition in which the second fluororesin layer is crosslinked.
Abstract:
According to the present invention, there is provided a slide member (1) for a shock absorber of a vehicle including a back metal (2), a porous sintered metal layer (31) containing a porous sintered metal (3) formed on the back metal and a resin (4) with which the porous sintered metal is impregnated and covered, and a resin slide layer (41) formed on the porous sintered metal layer and having a smooth slide surface (5), and the slide member (1) is formed in a cylindrical shape so that the resin slide layer is disposed on an inner peripheral side. The resin slide layer (41) is composed of polytetrafluoroethylene (6) and a plurality of granular elements (7) dispersed in the polytetrafluoroethylene, and the granular element is composed of molybdenum disulfide and molybdenum trioxide, and/or tungsten disulfide and tungsten trioxide.
Abstract:
Methods for improving bearing performance in compressors, especially for those that use high energy refrigerants or that have a high-side design, are provided. The compressor comprises a bearing that is substantially free of lead. The bearing comprises copper and at least one lubricant particle type selected from a group consisting of: molybdenum disulfide (MoS 2 ), calcium fluoride (CaF 2 ), tungsten disulfide (WS 2 ), zinc sulfide (ZnS), hexagonal boron nitride, polytetrafluoroethylene (PTFE), carbon fiber, graphite, graphene, carbon nanotubes, carbon particles, thermoset polyimide, and combinations thereof. The compressor processes a high energy refrigerant and a lubricant oil comprising a sulfur-based additive. The sulfur-based additive reacts with the copper in the bearing to enhance lubricity and improve performance of the bearing in the compressor machine. Compressors having such features and improved bearing performance are also contemplated.
Abstract:
The invention relates to an axial-radial slide bearing (10) having polymer slide elements (20). The slide bearing comprises a first bearing ring (11) and a second bearing ring (12), which are rotatable opposite each other about a bearing axis (A), wherein the second bearing ring forms a substantially U-shaped cross-section in order to receive the first bearing ring at least in regions. The slide elements (20) are produced from a tribopolymer and arranged between the first and second bearing ring in order to axially and radially decouple the bearing rings. The slide elements each have a substantially L-shaped cross-section, having an axial region (21) having axial slide surfaces and a radial region (22) having radial slide surfaces. According to the invention, the radial region (22) of the slide elements (20) has at least one hinge connection (23) which flexibly connects two segments (24) of the radial region so that they are movable against each other. The slide elements (20) can thus be adapted to the diameter (D) of the axial-radial slide bearing (20). The invention likewise relates to a slide bearing (20) having at least one such hinge connection (23) in the radial region (22) of the slide element (20).
Abstract:
A bearing assembly (1) for coupling articulated trains with a radial spherical plain bearing. The assembly comprises an outer housing (2), a composite bearing race (10) having an inner surface (12), an annular bearing insert (16) and an inner ball (25). The composite bearing race is defined by a plurality of split race portions (10a, 10b) arranged at least partially within the outer housing (2). The bearing insert (16) is preferably split, has a truncated substantially spherical inner bearing surface and is arranged at least partially within the bearing race (10). The inner ball (25) has a truncated substantially spherical outer bearing surface (26) and is rotatably held within the bearing insert (16). The assembly (1) is configured such that, when the longitudinal axis of the inner ball (25) is aligned with the longitudinal axis (7) of the annular bearing insert (16), the spherical outer bearing surface (26) of the inner ball (25) extends beyond the inner spherical bearing surface (18) of the bearing insert (16) in both axial directions.
Abstract:
A seal for a bearing has an annular body comprising polytetrafluoroethylene in a matrix including an elastomeric material. The seal includes a biasing member (124) that is in communication with the seal for urging a portion of the seal radially inward.