Should You Flood or Starve a Sleeve Bearing?  

Oleh:

Booser, E.R. ; Khonsari, M.M.

Jenis: Article from Bulletin/Magazine - ilmiah internasional
Dalam koleksi: Machine Design (Soft Copy ada dalam http://search.proquest.com/) vol. 83 no. 14 (Aug. 2011), page 40-44.
Topik: Bearings; Lubricants & Lubrication; Machinery; Engineers; Reliability

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Perpustakaan Pusat (Semanggi) Nomor Panggil: MM44 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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It's surprising how little lubricant oil-film sleeve bearings really need. Millions of bearings in electric motors, machine tools, pumps, and industrial fans run without a hitch on lubricant feeds that can't develop full hydrodynamic films of oil. However, engineers need to understand load and speed limits and the damping characteristics of starved bearings to ensure safe operation. A good starting point is to follow manufacturers' guidelines. Engineers should also know how to calculate minimum oil-film thickness and power loss, as well as predict temperature rise from reduced oil supplies. One way to ensure increased oil delivery and greater reliability is to use two oil rings. Engineers should also keep in mind that, at high speeds, the ring loses oil by centrifugal throw-off and windage. Engineers need to be careful to limit surface speeds for wick-oiled bearings to 13 fps or less because the small quantity of oil can't carry away significant heat.

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