A bearing that uses air instead of an oil film as a lubricant between the shaft and bearing. Compressed air created by a compressor is introduced into the bearing section, and high-pressure air is sent around the shaft. Since the shaft floats on an air film, there is almost no friction. Since air is available everywhere, there is no hassle like using oil, and there are no inconveniences with temperature rise due to friction, so it is suitable as a bearing for shafts that rotate at high speeds. It is used as a bearing for ultracentrifuges, gyros, and other devices that require high speed rotation. [Hidetaro Nakayama] [Reference item] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
軸と軸受の間に潤滑剤として使用されている油膜のかわりに、空気を使用した軸受。圧縮機によりつくられた圧縮空気を軸受部に導き、軸の周囲に高圧の空気を送り込んだものである。軸は空気膜上に浮かんでいるので摩擦はほとんどない。空気はどこにでもあるので、油を使うような煩わしさはなく、摩擦による温度上昇についても不都合なことがなく、したがって、高速回転をする軸の軸受として適している。超遠心機、ジャイロなど高速回転を必要とするものの軸受として使用される。 [中山秀太郎] [参照項目] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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