Hydrodynamic bearing, manufacturing method of hydrodynamic...

Details Hydrodynamic bearing, manufacturing method of hydrodynamic... Hydrodynamic bearing, manufacturing method of hydrodynamic...

2006-10-10

2006-10-10

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S132000

Reexamination Certificate

active

07118278

ABSTRACT:
A suitable the inner point is set on a vapor-liquid face of lubricating fluid formed in a composite capillary seal section that utilizes capillary force and rotational centrifugal force acted on the lubricating fluid. An inner peripheral surface of a ring-shaped portion is formed such that the minimum value R1in radial-direction distances of the inner peripheral face of the ring-shaped portion becomes greater than a radial-direction distance R2of the inner point (R1>R2). This can observe the inner point of the lubricating fluid from the immediately-above position, whereby the filling amount of the lubricating fluid can easily and surely be measured, thereby being capable of adjusting the filling amount of the lubricating fluid to a preset amount.

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