Newly developed sealed bearing cartridges from GGB offer a cost-effective, maintenance-free alternative to conventional greased bronze, hardened steel and rolling-element bearings in demanding applications. Because they are self-lubricating, these cartridges are low-maintenance, and have no need of costly automated greasing systems and environmentally harmful lubricants.
Capable of handling loads of up to 620MPa, they provide superior wear rate, (averaging 13% that of hardened steel bearings according to independent tests), are dimensionally stable and provide excellent corrosion resistance. Integral lip seals exclude contaminants from the bearing surfaces, and a zinc-plated steel outer shell protects them from compressive loads.
The sealed bearing cartridges are available with GGB’s Gar-Max or High-Strength Gar-Max filament-wound plain bearings. Both have a sliding layer composed of continuously-wound PTFE and high-strength fibres, encapsulated in an internally lubricated, high-temperature filled epoxy resin. Backing the sliding layer is continuously-wound fibre glass, encapsulated in a high-temperature epoxy resin.
A range of standard dimensions is available, accommodating shaft diameters from 25mm to 100mm, and housing bores from 41mm to122mm. These bearing cartridges can also be manufactured in non-standard dimensions to meet customer requirements.