| 摘要 |
A rotary pump for liquid comprising a housing, a shaft carrying a motor rotor, a motor stator fixed in the housing and surrounding the rotary to rotate the rotor and shaft about an axis, where the shaft is mounted in the housing by axially spaced conical bearings each of which includes a first element fixed on the shaft with a first conical bearing surface concentric with the axis and a second journal element carried by the housing with a second conical bearing surface concentric with the axis and slidably engaging the first bearing surface. A biasing element forces the second elements or journal toward each other in an axial direction to compensate for wear between the friction surfaces. A wear indicator comprises a first follower on the housing and movable axially with the second element of the first conical bearing, a second follower on the housing and movable axially with the second element of the second conical bearing with the follower indicator elements spaced from each other a spacing indicative of the total axial movement of the second bearing elements and a view window on the housing for viewing the spacing of the indicator elements.
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