Two kinds of stabilizing methods for externally pressurized thrust gas bearings are presented and analyzed. Both stabilizers of them are composed of fluid restriction and capacitance. The first type of stabilizer, which has been investigated by Loch, has a pair of restriction and capacitance attached additionally to the bearing recess, and the second type has the pair inserted into the gas-supply line to the bearing recess. Since the theoretical base of Loch’s analysis had questionable points, the analysis by the authors is started from a new and different standpoint and applied to the second type as well as to the first type. Experimental results show good agreement with the analytical results and the design of the stabilizers has been established.

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