Categories: Shaft Alignment,Machinery Diagnostics,Condition Monitoring,Other Topics

Why You Should Perform Shaft Alignment as Part of Your PM

| | |

By on December 27, 2017

James Pekarek, one of our trainers, wrote a blog entitled “Performing Alignment Checks as Part of Your Preventive Maintenance”.

It is a great article, and good advice.  I recently shared this blog post, and the advice, with a customer of ours.  Here’s why.

I taught a training class at a large water plant in the eastern US.  They had multiple buildings, and many pumps.  Precision alignment had been performed on these pumps – some with dials, some with lasers.  They did perform pump PM on an annual basis, but did not check for alignment.

Some of these pumps required coupling insert replacement on a regular basis, and some did not.

When a machine is supposedly aligned, but requires frequent coupling replacement, it is a good sign that:

  • it is not aligned correctly,
  • the coupling is not matched to startup and torque requirements,
  • the alignment has changed.




Obviously, the pump was out of alignment.  Which of these three took place – I don’t know.

It was aligned to tolerance, and the alignment data was saved.  This facility will now include a quick alignment check as part of their PM.

The benefits?

  • If their alignment changes, they will know.
  • They’ll be able to make corrections before more serious damage occurs.

They will use their alignment tool as a PM tool, not just a repair tool.

About the Author

Stan Riddle joined VibrAlign in 2008. He has over 35 years experience in aligning industrial machinery. Stan received his AAS Degree in Machinist Technology from Surry Community College in Dobson, NC, and also holds a diploma in Industrial Systems Technology from Forsyth Technical Community College in Winston-Salem, NC, where he was also an instructor in the program.

Stan began his maintenance career working as a machinist and millwright for companies such as Weyerhaeuser, R.J. Reynolds, and Tyco Electronics. He also has over 25 years experience in Predictive Technologies, such as vibration analysis, thermography, oil analysis, and ultrasonic inspection. He is a certified Level III Vibration Analyst with the Vibration Institute, and is a Past Chairman and Board Member of the Piedmont Chapter.

Stan and his wife live in Yadkinville, NC.

Comments are closed.