A bearing has a thrust plate integrated with its shaft and a bearing member surrounds
both. A radial pressure bearing portion and separate thrust portion generate pressure
on a lubricating fluid in a gap between the shaft and bearing member. One end of
the gap is closed while the other is open and has a capillary seal formed with
an angle that is large at a boundary but smaller at increasing distance therefrom.
The fluids fills the gap so that gas-fluid interface is where the angle is small
and causes the thrust plate to float. A pressure mechanism forces the fluid from
the open to the closed end and the quantity of fluid is set to fill the mechanism
even if the gas-fluid interface moves.
