STATIC PRESSURE GASEOUS MATTER BEARING EQUIPPED WITH BEARING SURFACE IN BOTH RADIAL AND THRUST DIRECTIONS

摘要

PURPOSE:To improve load capacity by dint of dynamic pressure effect by making bearing gaps at the intermediate parts between plural rows of air feeding bores in the circular direction smaller than settled static pressure bearing gaps. CONSTITUTION:A cylindrical surface 120 of an annulus 105 has two rows of air feeding bores 109, 109 installed at the same intervals on the circle having the same sectional surface. An axle 101 and plural air feeding bores 110, 110' installed at the same intervals on the circle with the axial core constitutes thrust type of static pressure bearing surface which is situated in the middle of annular flat surfaces 111, 111' and has self-throttle. Annular flat surfaces 112, 112' installed on side plates 104, 103 constitutes thrust type of static pressure bearing part through settled bearing gaps 113, 113' between 110, 110'. Static pressure bearing gaps 118, 118' are provided between circular surfaces 121, 121' and the cylindrical surface 120, while between the air feeding bores 109, 109' is provided a bearing gap 119 which is smaller than the static pressure bearing gaps, to improve the load capacity by dint of the dynamic pressure effect.