Posts by: Stan Riddle

Help Your Laser Shaft Alignment System See!

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By on November 13, 2014

For precision shaft alignment, nothing beats a good laser alignment tool. But the best of tools can have errors, or not even work at all, if the Sensors (detectors) can’t “see” the laser beams! We received a customer support call, and the aligner stated that his laser alignment tool wasn’t repeating. This is a rare […]

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Coupling Alignment Tolerances vs. Shaft Alignment Tolerances

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By on October 8, 2014

A coupling alignment tolerance and a shaft alignment tolerance are different things – VERY different things! A Coupling Alignment Tolerance is often (but not always) the maximum amount of misalignment the coupling will operate at before premature failure. A Shaft Alignment Tolerance is the maximum amount of misalignment the shafts can tolerate before they begin […]

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Machine Train Shaft Alignment Tricks

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By on September 10, 2014

Simply stated, a machine train is when three or more machine components are coupled together, acting as one.  Machine train alignment can sometimes be a complicated task. Some laser alignment tools can measure machine trains of up to several machines, simplifying the move options.  Whether you have a machine train program or not, by using […]

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How to Perform a Precision Alignment When Nearby Machines Are Vibrating.

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By on August 6, 2014

Equipment rooms can sometimes have numerous machines running all at once-side by side.  Often, technicians are required to perform a precision alignment next to a machine which is running.  The technicians are right to be concerned about vibration from nearby machines, but the concern can be greatly reduced if certain procedures are followed. The first […]

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How To Align a “Moving” Motor.

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By on June 26, 2014

After 34 years, aligning a few thousand machines, teaching millwright training for a technical college, and being an instructor for VibrAlign, I sometimes think that no alignment challenge can beat me!  Then something comes along to really put me in my place! I was put in such a place while training at a large manufacturer […]

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What To Do When They Want To Run the Machine NOW!

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By on June 18, 2014

I frequently hear statements similar to these in training classes: We just straightedge it in, and align it when we have an outage. Don’t be so picky.  It IS a flexible coupling. They won’t give me time to align it properly. My answers are something along these lines: I doubt they’ll let you go back […]

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In Laser Alignment, Size Matters!

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By on May 8, 2014

When performing precision shaft alignment, regardless of the measuring tools being used, size matters.  Many coupled machines have obstructions around the couplings, such as transmitters, oil or cooling lines, conduit clamps, and many other components which can make precision laser shaft alignment challenging. Fixturlaser’s new generation Bluetooth sensors (pictured on the left above) are the […]

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Spacer Shafts, Jack Shafts, Line Shafts, and Spool-pieces

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By on April 25, 2014

In shaft alignment, the terms Spacer Shaft, Jack Shaft, and Spool-piece are often interchanged.  They refer to a shaft which connects the driving machine to the driven machine.  While the name is not so important, the type of configuration must be known, because the method of alignment can be different depending upon the type. They […]

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Can Precision Shaft Alignment Be Too Good?

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By on April 3, 2014

A shaft alignment tolerance is simply that – an allowable, minimal amount of misalignment.  There are many different tolerance tables for shaft alignment.  At VibrAlign, we have a good alignment tolerance, based on many years of experience and engineering.  Other alignment tools have their own tolerance tables.  Many technical and trade organizations have their alignment […]

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Sheave Alignment Is the First Step in Making V-Belts Last

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By on February 13, 2014

VibrAlign recently released an excellent “how-to” video on its You Tube channel.  This video explains not only how to use the VibrAlign Belt Hog laser sheave/pulley alignment tool, but also introduces the 3 concepts of sheave misalignment and how to correct them. https://www.youtube.com/watch?v=NmtMGikWApw However proper sheave alignment is only one step in making belts last.  […]

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The Alignment Triangle

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By on December 18, 2013

No, it is not the place where good shaft 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 machine may be a few thousandths up, down, left, or right of perfect.  […]

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Broken Washers Can Cause Headaches!

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By on October 11, 2013

Recently a customer contacted us about increased vibration on a motor, due to a broken washer.  And they wanted to know if there was a specification for washer hardness, and a guide for bolt size to washer size. There are many standards for bolting (USS, SAE, ASME, etc.), of which, washers are an important part.  […]

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Coupling or Shaft Runout

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By on October 3, 2013

On rotating machinery, runout is defined as the degree to which a shaft or coupling deviates from true circular rotation.  Every shaft or coupling has a center or rotation, or centerline.  Any stray from concentricity is considered runout.  If runout is severe, it can cause many problems with equipment, such as: Excess vibration Seal wear […]

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It’s Brand New, So It MUST Be Aligned, Right?

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By on August 26, 2013

During a recent training class at a new facility in Indiana, the class wanted to check alignment of a recently installed circulating pump.  Their response was, “It’s brand new, so it must be aligned, right?”.  To which I responded, “I’ll bet it isn’t”. Here are the alignment results as we found it.  For an 1800 […]

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Got Alignment Problems? Just Let Us Know!

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By on June 13, 2013

VibrAlign’s Shaft Alignment Training is the best in the industry.  We not only train maintenance personnel on how to use our tools – we teach alignment!  Lots of it!  We teach correcting soft foot, bolt bound problems, pipe strain, coupling problems – real world stuff. Our training staff has about one hundred combined years of […]

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