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  • A dry subject
    Bearings sans liquid lubricants find use in everything from computer printers to rocket engines. Director, Center for Rotating Machinery Dry bearings, as the name implies, work with little or no liquid lubrication. Compared with rolling-element bearings, dry bearings are simpler to design, less
  • The Bonded-On Bearing
    They are good enough for NASCAR engines. Bonded bearing surfaces are coatings made from high-performance polymers reinforced with hard nanosized particles. Edited by Jean M. Hoffman Most engineers would jump at the chance to replace bearing inserts with dry lubricants. In many cases, of course
  • Bearings take the heat
    and oil lubricants aren't an option. Graphite-metal alloy bearings, in contrast, can operate dry for over 50 hr in some cases until fluid is reintroduced. Agrease-filled ball bearing on an oven-door latch seizes and keeps the door from latching. It turns out the +550 F oven temperatures over time
  • Wood you believe bearings?
    Rock-maple plain bearings can tolerate higher shaft speeds and loads than their plastic counterparts. Woodex bearings come in flange, pillow-block, roll-end, spherical, and hanger types. Style 226 hanger bearings and brackets are typically used in conveyors for grain, slurries, and dry chemicals
  • Lube-for-life journal bearings
    to the pin/bearing interface; scrubbing using a graphite or MoS Sintered bearings disperse a liquid lubricant such as oil, grease, or silicone fluids trapped in the bearing wall. The lubricant eventually runs dry and must be replenished from an external source. Scrubbing mechanisms also rely
  • Bearing Performance Under Extreme Pressure Conditions
    Dicronite dry lubrication is commonly used to extend the life or increase the load carrying capacity of rotating or sliding elements beyond that obtained with wet lubricants only. In the tests described below, Dicronite dry lubrication was evaluated in conjunction with various conventional
  • Felt Seals
    . Wool felt seals, in a dry state, are highly effective as filters in removing particles of 0.7- m size and larger. When saturated in lubricants, even smaller particles are trapped and retained. Capillary properties of a felt seal ensure lubrication after long idle periods. Storage capacity is largely
  • Bonded films take the "bite "
    properties of GFTP parts have had mixed results. Conventional dry-film lubricants, for example, lower surface friction but are sheared by glass fibers protruding above the plastic. Coatings that rely on thermal curing are typically processed at elevated temperatures that degrade most plastics. Further

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