Author Archive

About Stan Riddle

Stan Riddle joined VibrAlign in 2008. He has 30 years experience in aligning industrial machinery. 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 where he enjoys wood carving, fishing, and anything else outdoors.


Hog Brand Shims

Shims 201 – The Importance of Measuring Shim Thickness

Stainless steel shims are now the standard for use in shimming machinery when preforming a precision laser or dial indicator shaft alignment.  They are clean, corrosion resistant, flat, and most importantly, pre-cut.  Their use speeds up the alignment process significantly.  [...] Read More

Uncoupled alignment

Aligning Uncoupled Machines

Normally, it is faster and more accurate to perform shaft alignment while the machines are coupled together.  This offers several benefits such as:  Keeping the relative angular positions of the shafts the same allows the technician to align the true [...] Read More

Hog Brand Shims

Shims 101

Stainless steel shims have for the most part replaced cutting shims from rolled stock. They speed up the alignment process dramatically. They usually assure a more accurate alignment since they come in many different thicknesses. They are clean, flat, and [...] Read More

shim stack

Stacking the Deck Can Get You in Trouble!

The photo to the right was taken at a recent training class. The maintenance guys at this facility were excellent aligners. They were adamant about getting their shaft alignments to “better than excellent” levels. They believed in preparing the surfaces [...] Read More

No Featured Image

Thermal Growth-What’s So Hot About It?

Engineering and technical people often use technical phrases that sound complicated. Thermal growth is one of those terms. It sounds like it could be an engineering marvel – one that would help us perform complicated alignments of high temperature, high [...] Read More

No Featured Image

Train-ing

A machine train alignment, one in which there are more than two machine components, and more than one coupling, may seem difficult to most aligners. But with some basic understanding, and the ability to “see the forest as well as [...] Read More

No Featured Image

Is it OK to Undercut Bolts?

This is probably one of the most common questions we are asked during our alignment training classes. And the best answer might be, “Sometimes, if you must, maybe!” Let me preach on it. Undercutting bolts is a method used to [...] Read More

No Featured Image

Can You Spot the Problem?

A few months ago, while teaching a shaft alignment training class, a customer asked if we could take a look at a machine that the maintenance group was having trouble assembling. After a quick inspection, the photo on the right [...] Read More

No Featured Image

The Alignment Triangle

No, it is not the place where good alignments get lost – never to be seen again! It is a way of thinking about locating machinery feet so that the shafts are in alignment, even when the feet of the moveable [...] Read More

No Featured Image

Jacking Bolts

Jacking bolts provide a smoother, easier way of moving machinery than using pry bars and hammers. Their use will almost always speed up the shaft alignment process, prevent excessive minor moves back and forth, and generally make the task of [...] Read More

No Featured Image

30-Minute Alignments

One of our trainers recently taught an XA Pro class at a large chemical company in Western Kentucky. Normally, our training classes consist of one day of classroom training, and ½ day of field alignments done by the students. During [...] Read More