静圧気体ジャーナル軸受の回転精度特性に関する基礎的研究 : 第2報, 軸回転精度特性

抄録

The run-out characteristics of a rotor supported by an externally pressurized gas journal bearing are analyzed theoretically with special attention to the relation with the machining errors of the bearing system. Both the static and dynamic run-out characteristics are discussed. The form deviation of the rotor cross section (i. e., out-of-roundness) is attributed to the critical factor which may govern the run-out characteristics of the rotor. The effects of size deviation of the supply holes are also investigated. The obtained results may offer a fundamental concept of the precision design of the externally pressurized gas bearing with respect to the rotating accuracy of the rotor.