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Sealing Performance and Optimization of Maintenance Free Bearing of Beam Pumping Unit

open access: yesShiyou jixie
The lubrication and sealing performance of the maintenance free tail bearing(sealed self-aligning roller bearing)of the beam pumping unit designed based on conventional experience cannot effectively apply to the unique swing and crank scissors difference
Wang Xiaogang   +6 more
doaj  

Lubricating Greases [PDF]

open access: yesJournal of Chemical Education, 2006
openaire   +1 more source

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