Search for dissertations about: "Rolling bearing lubrication at low temperature"

Found 4 swedish dissertations containing the words Rolling bearing lubrication at low temperature.

  2. 1. Rolling bearing lubrication at low temperature

    Author : Victoria Wikström; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : Problems connected with rolling bearings at low temperatures are high starting and running friction, concerns about the presence of a lubricating film and the degree of roller slip at low-temperature start-up. Also, questions have been raised whether the high shear stresses in a grease sheared at low temperature could cause thickener degradation. READ MORE

  4. 2. Elastohydrodynamic Lubrication of Cam and Roller Follower Applications : Fast and Reliable Predictions of Friction

    Author : Mohammad Shirzadegan; Daniele Dini; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

    Abstract : Modelling and simulation in tribology, and more specifically of friction in lubricated contacts, has gained increasing attention over the past years. In a lubricated contact, the dissipation of energy is due to the relative motion of the mating surfaces and arise due to direct contact as well as shearing of the lubricant film. READ MORE

  5. 3. The behaviour of antiwear additives in lubricated rolling-sliding contacts

    Author : Aldara Naveira Suarez; Nicholas D. Spencer; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : Traditionally rolling contact fatigue observed in bearing field applications was subsurface initiated. However, despite an improvement in the properties of steel, some factors such as downsizing in bearing design, extreme loading of bearings as well as demanding application conditions (start-stop cycles) have led to an increase in cases of surface damage related to surface initiated fatigue, which essentially comes from surface distress. READ MORE

  6. 4. Lubricating grease Experiments and modeling of wall-bounded- and free-surface flows

    Author : Jinxia Li; Arto Lehtovaara; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : Lubricating grease is commonly applied to lubricate e.g. rolling bearings, sealsand gears. Grease has some clear advantages over lubricating oil: it is a semisolidmaterial, which prevents it from flowing/ leaking out from the bearingsystem and gives it sealing properties, and it also protects the system fromcontaminants and corrosion. READ MORE