A linear guide mechanism includes a housing having an inside housing surface that defines a bore extending through the housing coaxial with a longitudinal axis. A shaft is disposed at least partially in the bore and is reciprocatably and linearly moveable in the bore along the longitudinal axis. The shaft has an exterior shaft surface. A self-lubricating liner is disposed in the bore between the inside housing surface and the exterior shaft surface. The self-lubricating liner has an inside liner surface that is in sliding engagement with the exterior shaft surface of the shaft. The self-lubricating liner has an exterior liner surface.

Upset oilfield tubing or upset pump rods are protected from abrasive wear by non-metallic circumferential wear bands applied to the upset portions of the tubing or rods and/or at selected locations along non-upset portions of the tubing or rods between the upset ends. The wear bands may be formed from selected polymeric materials including thermal polyurethane, polyphthalamide PTFE blends, and polyether ether ketone (PEEK), injection-molded onto suitably prepared circumferential surfaces of the tubing or rods. The wear bands may incorporate stainless steel mesh or other reinforcing materials embedded in the injection-molded polymeric material.

Upset oilfield tubing or upset pump rods are protected from abrasive wear by non-metallic circumferential wear bands applied to the upset portions of the tubing or rods and/or at selected locations along non-upset portions of the tubing or rods between the upset ends. The wear bands may be formed from selected polymeric materials including thermal polyurethane, polyphthalamide PTFE blends, and polyether ether ketone (PEEK), injection-molded onto suitably prepared circumferential surfaces of the tubing or rods. The wear bands may incorporate stainless steel mesh or other reinforcing materials embedded in the injection-molded polymeric material.

A self-lubricating bearing includes an outer ring having a concave inside surface that defines an interior area of the outer ring. The bearing includes an inner member having a convex exterior surface. The inner member is disposed in the interior area, and the convex exterior surface has a physical vapor deposition coating thereon. A self-lubricating liner is bonded to the concave inside surface. The outer ring is made from a first metallic alloy, and the inner member made from a second metallic alloy.

A plain bearing, having a bearing base body made from a metallic material, having an intermediate layer made from a metallic material applied onto the bearing base body, and having a plain-bearing layer made from a non-metallic material applied onto the intermediate layer. The intermediate layer is an arrangement of wires or a perforated plate. The arrangement of wires or the perforated plate forms undercuts and the plain-bearing layer is a layer made from polyether ether ketone.

The present invention provides a polyamide resin composition (nylon composition) and a sliding member using this, which have excellent moldability and sliding properties. The polyamide resin composition contains, as additives, polyethylene resin of 5 to 20% by mass, polytetrafluoroethylene resin of 5 to 30% by mass, modified polyolefin resin of 0.5 to 5% by mass, and phosphate of 1 to 5% by mass, in addition to polyamide resin that is a main component. The sliding member is produced by molding this polyamide resin composition.

A bearing material including a substrate, and a sliding layer overlying the substrate, where the sliding layer includes fillers including wollastonite in a wt % range between 10 and 30%, barium sulfate in a wt % range between 5 and 15%, and pigment in a wt % range between 0.1 and 5%.

This assembly includes a ball joint assembled in a casing, and receiving an axle capable of sliding and/or rotating therein. The ball joint is formed from the winding of a fabric of small thickness ranging between 20 μm and 150 μm and mixed with a resin comprising fillers. The fabric has the form of strips having a width ranging between 5 mm and 200 mm; the strips being crossed in several layers.

This assembly includes a ball joint assembled in a casing, and receiving an axle capable of sliding and/or rotating therein. The ball joint is formed from the winding of a fabric of small thickness ranging between 20 μm and 150 μm and mixed with a resin comprising fillers. The fabric has the form of strips having a width ranging between 5 mm and 200 mm; the strips being crossed in several layers.

To provide a sliding bearing for an electric water pump, the sliding bearing being superior in low friction performance in water or an antifreeze solution. A sliding bearing 3 is for an electric water pump that comprises a rotor 1 having the sliding bearing 3 that is formed in a substantially hollow cylindrical shape and rotatably supports a shaft, and a stator that is disposed on a circle coaxial with the shaft and rotationally drives the rotor 1. The sliding bearing 3 is formed of a resin composition that contains synthetic resin as a main component. The resin composition contains 5-30 vol % of carbon fiber that has a density of 2.00-2.25 g/cm.sup.3 and an average fiber length of 30-300 μm, to a whole volume of the resin composition.