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Life expectancy, bearings

B = bearing wear (fraction of a bearing life expected), 0 < B < 1... [Pg.1092]

Load-carrying capacity and life expectancy of bearings 8/214... [Pg.195]

Predicting, from a history of breakdowns, the life expectancy of parts, bearings, etc., the tasks to be carried out and the frequency to be established ... [Pg.784]

Thrust bearing with long life expectancy (of well in excess of 30 years continuous operation). [Pg.231]

A thorough understanding of the mechanics of UHMWPE is important for efforts to improve the performance of orthopedic components. Elastic properties, resistance to plastic deformation, stress and strain at failure, fatigue behavior, and wear resistance of UHMWPE are believed to play roles in the life expectancy of an UHMWPE bearing. There exists a fundamental relationship between a material s intrinsic mechanical properties, akin to state variables, and how a structure made of the material will respond under mechanical stimuli. This material-specific fundamental relationship is referred to as a constitutive model. A validated constitutive model is a required input to a finite element (FE)-based simulahon of a structure made of the material in question. [Pg.309]

More bearings are destroyed during their installation than fail in operation. Installation with a heavy hammer is the usual method in many plants. Heating the bearing with an oxy-acetylene burner is another classical method. However, the bearing does not stand a chance of reaching its life expectancy when either of these installation practices are used. The bearing manufacturer s installation instructions should always be followed. [Pg.115]

Barium and lithium base greases are water resistant and will withstand temperatures of around 350°F. These greases have a long life expectancy and are suitable for bearings in hard-to-get-at places. Lithium greases are workable at -20°F. [Pg.336]

The expected bearing life can be calculated based on bearing data and the dynamic and static loads on the bearing. [Pg.58]

The bearing life is defined as the number of revolutions or number of hours at constant speed a bearing will operate before il fails. According to the international standard [27], and based on the assumption that the bearing will fail by fatigue, the expected life of a bearing is calculated by the simple formula ... [Pg.205]

Expected bearing life in hours — adjusted formula... [Pg.210]

Decreased life expectancy is not the only medical disadvantage of overweight. Obese people are more likely to develop diabetes mellitus, gall-bladder disease, some forms of cardiovascular disease, and arthritis of weight-bearing joints. If they require surgery they present considerable problems to both the anaesthetist and surgeon. Since obesity is not one of the conditions coded in death certificates it is impossible to provide accurate data about the contribution of obesity to death and ill-health in the community, but there is no doubt that it is a major factor. [Pg.465]

The preservation of these structures concerns both life expectancy and protection from collapse occurred from earthquakes in seismic regions or from other natural or anthropogenic disasters. The former is closely related to the conserva-tion/consolidation from decay phenomena due to the ageing effects of the environment impact (Ml the buildings. The collapse is mostly attributed to the inherent inadequacy of historical masomy structural systems to bear horizontal loads. [Pg.2272]

The Nonzero Minimum-Life Case. In many situations, no failures are observed during an initial period of time. For example, when testing engine bearings for fatigue life no failures are expected for a long initial period. Some corrosion processes also have this characteristic. In the foUowing it is assumed that the failure pattern can be reasonably weU approximated by an exponential distribution. [Pg.11]


See other pages where Life expectancy, bearings is mentioned: [Pg.154]    [Pg.1022]    [Pg.537]    [Pg.319]    [Pg.129]    [Pg.47]    [Pg.167]    [Pg.1512]    [Pg.141]    [Pg.90]    [Pg.70]    [Pg.369]    [Pg.94]    [Pg.84]    [Pg.331]    [Pg.66]    [Pg.62]    [Pg.63]    [Pg.32]    [Pg.208]    [Pg.210]    [Pg.210]    [Pg.175]    [Pg.1276]    [Pg.7]    [Pg.307]    [Pg.7]    [Pg.300]    [Pg.282]    [Pg.175]    [Pg.237]    [Pg.105]    [Pg.451]    [Pg.209]   


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