Cool ideas for thrust bearings  

Oleh:

Booser, E. R.

Jenis: Article from Bulletin/Magazine - ilmiah internasional
Dalam koleksi: Machine Design (Soft Copy ada dalam http://search.proquest.com/) vol. 81 no. 12 (Jun. 2009), page 42.
Topik: Bearings; Heat; Oil; Film

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: MM44.59 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

“Cool Ideas for Sleeve Bearings” (Machine Design, April 23, 2009) addressed modifications engineers can make to keep bearings cool, prolonging the lives of lubricants and equipment. Excessive heat buildup is not limited to sleeve bearings; thrust bearings can also benefit from some heat-dissipation techniques we investigated. Similar to sleeve bearings, the performance of fluid film thrust bearings substantially deteriorates as operating temperatures rise. Oil viscosity in the bearing clearance drops drastically due to viscous heating in the tight film gaps. As a result, the oil film thins and is less able to cool the bearing. These factors, in turn, increase the likelihood temperatures will be high enough to soften bearing material and even result in bearing wipe, smearing of the bearing material along the contact surface.

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