Centrifugal Pump Technical Questions And Answers Pdf

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1. Name parts of centrifugal pumps.

Casing, impeller, shaft, seal, wear ring, casing cover, stuffing box, shaft, bearings, bearing housing.

2. What is impeller back clearance?

Clearance between impeller back shroud and casing

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3. What is impeller front clearance?

Clearance between impeller front shroud and casing

4. How do you check impeller front clearance?

By moving the shaft until it stuck and move backward then calculate the distance by dial indicator.

5. Where is fixed bearing located?

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This type of bearing provides axial location to the rotating portions of machinery and can sustain both radial and axial loading.

6. What is floating bearing

The inboard side (non-drive end) bearing supports part of the radial load caused by the cantilevered impeller and is able to float axially to allow for thermal expansion of the shaft.

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