Consider the small high-speed pump setup below (measurements in mm). This was one of three new pumps...

Question

Consider the small high-speed pump setup below (measurements in mm). This was one of three new pumps at a water wastewater plant. Alignment must be done on the system using the reverse method of alignment, especially since the pumps operate at a higher speed.

The following measurements were made (motor = dial indicator reading on indicator closest to motor, pump = dial indicator reading on indicator closest to pump):

Using these readings, suggest shims and left-right moves on the machine in order to align it.

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David · Accepted Answer

Consider the small high-speed pump setup below (measurements in mm). This was one of three 
new pumps at a water wastewater plant. Alignment must be done on the system using the reverse 
method of alignment, especially since the pumps operate at a higher speed.
The following measurements were made (motor = dial indicator reading on indicator closest to 
motor, pump = dial indicator reading on indicator closest to pump): 
Using these readings, suggest shims and left-right moves on the machine in order to align it.
Solution: 
Reverse dial alignment is very similar to cross dial both in theory and misalignment calculation. 
They both can either be calculated mathematically or graphically. Although there are slight 
differences in the formula and the plotting, the process is practically the same. The two major 
advantages to using reverse dial over cross dial are that many pre-manufactured rigs are set up 
for reverse dial,

Consider the small high-speed pump setup below (measurements in mm). This was one of three new pumps at a water wastewater plant. Alignment must be done on the system using the reverse method of...

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