Metallized Carbon Corporation has announced the availability of bearings specially designed for dry running in high-temperature applications. The Metcar high-temperature bearings are intended for use at temperatures ranging from 350 to 1,000 degrees F in oxidizing atmospheres and from 350 to 6,000 degrees F in non-oxidizing atmospheres.
At these high temperatures, oil/grease-lubricated ball, roller and sleeve bearings can be problematic due to lubricant melting or carbonizing. Plastic and composite bearing materials can also soften, deform or melt at such high temperatures.
Metcar carbon-graphite bearings rely on graphite for their self-lubricating properties to avoid the shortcomings associated with petroleum-based lubricants at elevated temperatures. They are dimensionally stable and are not subject to melting, softening or deformation.
Ideal for continuous dryers, high-temperature conveyors, kiln cars and high-temperature ventilation dampers, Metcar bearings can also be used in other high-temperature equipment, including continuous bakery ovens, screw conveyors, valves and paint dryers. Several grades have received approval from the Food and Drug Administration for use in contact with foods and pharmaceuticals.
The bearings can be custom-designed for specific application dimensions and tolerances. Standard pillow blocks and flange blocks with Metcar bearing inserts are available with cast-iron, stamped-steel or stamped-stainless-steel housings.
For more information, visit www.metcar.com.