GGB, formerly Glacier Garlock Bearings, has introduced two self-lubricating, fibre/resin composite bearing materials.
The bearings, HPF and HPM, are designed to meet the demands of hydropower applications such as Francis, Kaplan and Pelton turbines, as well as gates and valves.
GGB claim that both HPF and HPM combine the self-lubricating properties of PTFE with the high strength and stability of an oriented glass-fibre-filled epoxy resin backing. The maintenance-free materials provide high load capacities, low wear rate and friction, long service life, low water absorption for dimensional stability and improved corrosion resistance.
HPF consists of a proprietary filled PTFE liner bonded to a fibreglass reinforced composite backing. It is available in both flat and cylindrical geometries. HPM consists of a bearing liner composed of PTFE and high-strength fibre winding encapsulated in an epoxy resin enhanced with self-lubricating filler. It is available only in cylindrical form.
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