Gear pump having members with different hardnesses
作者： Anthony Altieri , Richard David Bothmann , John Lewis Fortin , Dietrich M. E. Heyde , Philip DiGangi
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摘要: An improved gear pump having members with different hardnesses includes a housing defining an internal bore inlet and outlet passageways. A head member wall between the passageways extends toward toothed rotor. idler meshes The are made of materials hardness greater than that rotor material. In one embodiment is ceramic material whereas cast iron, treated to have
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