| 摘要 |
The present invention is directed to a gear pump having a housing ( 10 ') with an interior pumping chamber ( 200 ) and an inlet ( 40 ') to and outlet ( 42 ') from the chamber, the outlet being spaced from the inlet. A pair of rotating gears ( 330,332 ) is located in the chamber, the gears including teeth which mesh during gear rotation. The gears are preferably powder metal construction and fixedly secured on a shaft ( 230,232 ) having an axis of rotation. A pair of one-piece bearings ( 210,212 ) is located in the chamber and journal one of first and second end portions of each shaft ( 320 ). The one-piece bearings provide precise alignment of the first and second end portions of the shafts and maintain the shafts in parallel relation.
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