D144 ねじ圧縮機のすべり軸受(第 1 報) : スパイラルグルーブ軸受の負荷容量  [in Japanese] Sliding Bearing of Screw Compressors (1st Report) : Load-Carrying Capacity of Spiral Groove Bearings  [in Japanese]

Ball bearings are currently applied to support of screw compressor, but there are serious problems against the action of large load stress by the Hertzian contact. In this paper, the author applies a fluid film bearing focusing on 'spiral-grooved bearing' to the support element of screw compressor because the fluid film bearing can permanently work on the full-film condition. Performances of eight types of spiral-grooved bearing are calculated from the view points of the load-carrying capacity. Finally, the author proposes an application of 'In flow+Radius bearing' to a screw compressor, resulting in an achievement of the long life, high durability against its reverse rotation, and steep cost down.