Graphite lubrication.To address lubricant Lubricant A gas, liquid, or solid used to prevent contact of parts in relative motion, and thereby reduce friction and wear. In many machines, cooling by the lubricant is equally important. problems brought about by elevated operating temperatures, SKF SKF Svenska Kullagerfabriken SKF Svenska Klätterförbundet (Sweden) SKF Smithsonian Kite Festival SKF San Antonio Kelly Field Annex (Lackland AFB, Texas) has developed a maintenance-free lubricating solution. It can supply high temperature bearings that incorporate a unique dry graphite lubrication lubrication, introduction of a substance between the contact surfaces of moving parts to reduce friction and to dissipate heat. A lubricant may be oil, grease, graphite, or any substance—gas, liquid, semisolid, or solid—that permits free action of technology--a solution that increases reliability and service life at extreme temperatures. SKF's dry lubrication technology incorporates a graphite insert, replacing all other lubricants lubricants preparations for the lubrication of passages to reduce frictional injury, e.g. oily preparations, including petroleum jelly, lanolin or water-soluble preparations such as methyl cellulose. . Graphite is an excellent lubricant and is already used as an additive in high temperature applications. The graphite insert in SKF's VA228 bearing is in the shape of a crown, surrounding and separating the balls. It can handle temperatures between--150[degrees] and 350[degrees]C, at speeds of up to 100rpm. Another version, the VA208, has graphite segments between the balls rather than a complete crown. The surfaces of both bearings are treated with manganese manganese (măng`gənēs, măn`–) [Lat.,=magnet], metallic chemical element; symbol Mn; at. no. 25; at. wt. 54.938; m.p. about 1,244°C;; b.p. about 1,962°C;; sp. gr. 7.2 to 7. phosphorate to prevent rust and provide a run-in surface, and both bearing types are completely maintenance free. Contact SKF on tel: 01582 490049 or visit: www.skf.com |
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