Abstract
For controlled hydrostatic bearings having variable restrictions, it is possible to make their static stiffness increase greatly by means of the automatic regulation of recess pressure; namely the recess pressure controlled by a spool valve rises rapidly according to the displacement of journal or shaft, thus the bearings possess very high load capacity at steady state. However, it may be considered that the dynamic behavior of these controlled bearings is inferior to an ordinary bearing employed conventional fixed restriction of flow. For practical use of these therefore, the investigations of the static and dynamic characteristics are riquired. This paper bearings, presents experimental results obtained by a testing device, which is made to examine the procedure of practical design and refers to theoretical research on a controlled hydrostatic journal bearing having a variable restriction by means of the spool valve and four rectangular recess around the shaft. The static and dynamic characteristics of the controlled hydrostatic bearing are discussed.
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