INA plain bearings with ELGOTEX WA are resistant to seawater and have been specially developed for use as rudder and stabilizer bearings in marine applications. They are certified according to MCM-0112 by Germanischer Lloyd. This design is specifically suitable for water lubrication, and therefore, does not require a complicated seal of the kind required by conventional rolling and plain bearings.
The ELGOTEX WA material comprises two layers that are wound onto each other. The internal sliding layer, which is embedded in a resin matrix with fillers and solid lubricants, is made of continuous synthetic and PTFE fibers. The external layer also comprises continuous glass fibers (glass filament) in epoxy resin. A specific winding angle stabilizes the layers, thereby significantly increasing the strength of the bush. Because the plain bearing is self-lubricating in water, there is no need to use oil or grease, and no seals are required. This means a major benefit in ecological terms when used in water.
The combination of materials makes bearings with ELGOTEX WA resistant to corrosive media and allows a constantly low friction value with low wear and absolute freedom from maintenance. These bearings have a high radial load carrying capacity, can be used for axial movements, and are insensitive to shocks and edge pressures. They are not sealed, but can be supplied with internal seals for protection against abrasive contamination if required. In addition to their use in marine applications, INA plain bearings with ELGOTEX WA are also suitable for use in ocean engineering, hydraulic steel constructions, hydroelectric power plants, and in pumps and turbines.