(May 10, 2011)
Metallized Carbon Corporation, a global leader in the manufacture of oil-free, self-lubricating materials, offers its Metcar Grade 1515 Copper Impregnated, Carbon-Graphite material, specially designed to operate without lubrication in dry and dust-prone environments at temperatures up to 750 degrees Fahrenheit. Metcar 1515 is ideal for bearings and thrust washers in a variety of applications, including gypsum board dryers, kiln cars, oven dryers, electrostatic precipitators, ventilating dampers, furnaces and conveyors.
Metcar bearings are self-lubricating, non-galling, dimensionally stable and have high compressive strength. Boasting good thermal properties and high electrical conductivity, the bearings and bearing assemblies are the ideal carbon-graphite solution for applications in harsh operating conditions.
One illustrative key use of Metcar Grade 1515 is for electrostatic precipitators used on recovery boilers in large paper mills. The precipitator removes "salt cake" ash from the boiler exhaust gas, which drops onto a drag chain conveyor that can be about twelve feet wide and fifty feet long. The drag chain is driven by sprockets on three to five inch diameter steel shafts that are held by pillow block bearings made of the Metcar Grade 1515 self-lubricating bearing material. Oil/grease lubricated bearings would not be satisfactory for this application because the temperature at the bottom of the electrostatic precipitator is about 350° F. Also, the bearings' inaccessible location would make it difficult to re-lubricate conventional oil/grease lubricated bearings. Similar bearings are used in drag chain conveyors that remove the ash from the bottom of large boilers that burn municipal waste, waste tree bark and other solid fuels in lumber mills.
Metcar Grade 1515 Copper impregnated carbon-graphite is unsurpassed as a unique, maintenance-free, high-temperature bearing material.
About Metallized Carbon Corporation
Since its inception in 1945, Metallized Carbon Corporation has been manufacturing high-quality, dependable bearing solutions for severe operating environments. With over 50 years of Application Engineering experience, Metallized Carbon offers the field expertise and data necessary to provide The Solid Choice for Lubrication® in a wide variety of industries, supplying completely machined components as well as materials for customer machining. Metallized Carbon is ISO certified and produces the Metcar brand of solid, oil-free, self-lubricating materials.
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