| 摘要 |
A centrifugal pump (10) is provided with: a housing (26); an impeller (28) that is rotatably provided within the housing (26); a shaft (62) that is provided to the center of the impeller (28); and a bearing (70) that pivotally supports each of shaft ends (66) that are provided to both ends of the shaft (62) in the axial direction thereof. At least one of the shaft ends (66) has a surface roughness (Ra) of 0.21 µm or less or a surface roughness (Ry) of 1.49 µm or less. |
