Three-lobe journal bearings

Figure 8-21. Three-lobe journal bearing. Courtesy of Turbacare, A Division of Demag Delaval Turbomachinery Corp., Houston facility...

FIG. B-4 Sketch of a three-lobe journal bearing. (Source Demag Delaval.)... 

Therefore, this study is focused on a three lobe journal gas bearing. This analysis is carried out using a non linear dynamic model. This analysis enables to imderstand the static behaviour of the bearing when submitted to a given load (fixed magnitude and direction) but also to determine if the operating condition is... 

The three-lobe journal hearing shown in Fig. B-4 is applied on high-speed machinery, usually when the bearing is end-fed and used in combination with a face-contact seal or when the bearing itself is a shaft seal. The three-lobe design provides, intrinsically, a stable three-point support that is particularly adaptable to very light loads in either horizontal or vertical shafts. Because of the small... 

The static behaviour and the stability of a three lobe offset journal gas bearing have been investigated with a non linear dynamic model. The analysis was focused on the effect of the internal geometry on the bearing performances. 

Journal bearings. Pressure-lubricated three- or four-lobe bearings provide excellent load capacity and journal stability. 

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