How do you align a pump shaft?
Proper shaft alignment is achieved by moving the motor. The motor is shimmed vertically to achieve the proper elevation to align it to the pump, both parallel (offset) and angular. The motor is them moved horizontally to achieve proper horizontal placement for aligning the shaft centerlines, both parallel and angular.
What is the methods of alignment?
Coupling alignment can be achieved in many ways using several different techniques, including mechanical, optical, and laser. Mechanical methods, using dial indicators, parallel bars, and feeler gauges are battle tested and proven.
How do I know if my pump is aligned?
Measuring Misalignment
- With the motor and pump shaft flanges close to each other, but disconnected, mark a spot on each shaft, then measure the separation between them with a feeler or taper gauge.
- Rotate both shafts by about 90 degrees, keeping the marks close to each other.
How do you check for misalignment?
Measurement of Misalignment By measuring your shaft alignment from different points along the horizontal and vertical planes, you can determine exactly how far out of alignment your shafts are and whether you are dealing with angular misalignment or offset (parallel) misalignment or, typically, both.
What is reverse alignment method?
Reverse alignment is the measurement of the axis, or centerline, of one shaft to the relative position of the axis of an opposing shaft centerline. The centerline measurements are taken in both horizontal and vertical planes (Figure 1).
What are the two types of misalignment?
There are two types of misalignment: parallel and angular misalignment. With parallel misalignment, the center lines of both shafts are parallel but they are offset. With angular misalignment, the shafts are at an angle to each other.
What are the alignment parameters for a pump?
Depending upon the alignment method chosen (reverse indicator, rim and face, double rim, etc.), specific alignment parameters must be established, measured and subsequently corrected in order to achieve the desired final machine alignment .
What’s the best way to align a pump pipe?
Bring the piping to the pump now. As a final alignment step, bring the piping to the equipment. Take final measurements, and tack weld the spools in place. At this time, the spools can be removed and taken back to the hot work permit area to finalize the weld. Leave a square and parallel gap between the flange faces.
How is a centrifugal pump aligned by crane engineering?
The computer then makes recommendations for adjustments. The wastewater operator chose to have this pump laser aligned by the Crane Engineering Service team and the noise from the bearings quickly subsided. Now, they ensure proper alignment of all their pumps before start-up.
What happens if a centrifugal pump is not aligned?
Machine vibration, bearing damage, premature seal wear, and coupling damage are all examples of issues pumps experience if improperly aligned at installation. Misaligned pumps can also draw up to 15% more energy than aligned pumps.