RESEACH THE EFFECT OF LOAD ON SHAFT BALANCE IN THE AEROSTATIC AIR BEARING

Abstract

The main shaft uses air bearing which has such advantages as almost no
friction, low heat generation, and high durability. However, the problem of gas
lubrication also has disadvantages that are not as stable as similar bearings with
liquid lubrication; air bearings are often subject to small loads etc., which limits
the usable space of the air bearing. In addition, the research and calculation of
the air bearings are ongoing and under experiment, which is facing certain
difficulties. Overcoming of the instabilities caused by the vortex motion of the
gas in the bearing manifested in the semi-velocity vortex, the synchronous
vortex, etc. is the most difficult problem. In this paper, a plan to balance the
static air bearing shaft is proposed by numerical simulation and experimenting
with the load capacity to the stiffness in the aerostatic air bearing.