Posts tagged with: “shaft alignment”

Where is the Center of the Coupling?

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By on May 26, 2015

During a precision laser shaft alignment, we measure the setup dimensions and input these into the Fixturlaser Laser System Display Unit. The requisite dimensions are Stationary Sensor to Movable Sensor, coupling center to M Sensor, M Sensor to movable inboard foot, and foot to foot on the moveable machine. One dimension that shaft aligners occasionally […]

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Clean, Clean, Clean! To Eliminate Soft Foot!

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By on May 7, 2015

There are many things that can affect the precision shaft alignment process, which needs to be checked and eliminated during the Pre-Alignment Steps, such as pipe strain, disintegrating bases, bearing or coupling wear, etc…. One of the main issues concerning shaft alignment of rotating equipment is the challenge of soft foot and its detrimental effect […]

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Don’t Overlook the Hold Down Bolt Washers

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By on January 22, 2015

Anyone involved in precision shaft alignment knows that unintentional movement is the biggest contributor to non-repeatable alignment results. Movement can come from several sources: Soft foot, loose bolts, flexible bases, excessive bearing clearances, improperly mounted or loose sensor mounting hardware, etc. One of the more elusive and least considered sources of movement is cupped washers […]

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OL2R – The True Measure of a Machine’s Movement

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By on December 11, 2014

OL2R is the acronym for OffLine 2 Running. OL2R is an optional program and special precision bracket set that is available for the Fixturlaser NXA Pro & Ultimate (also XA Pro & Ultimate). This option allows the shaft aligner to accurately measure vertical AND horizontal changes of machines from a static (OffLine) position to a […]

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VibrAlign’s Expanded Training Capability Creates Expert Shaft Aligners

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By on December 5, 2014

VibrAlign, Inc., American distributor of Fixturlaser Alignment tools, is proud to announce the expansion of their offerings as a shaft alignment training provider. VibrAlign now employs six full-time, professional trainers. Stan Riddle, David Zdrojewski, Tom Shelton, Brad Case, James Pekarek, and Mac MacCormack will be leading training classes at VibrAlign’s Richmond office, their Houston, TX […]

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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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“Electrical Pipe Strain?”

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By on November 6, 2014

Precision shaft alignment of rotating equipment is an essential part of any solid preventative maintenance program. To accommodate aligning any type of machinery you must be able to move one of the elements of the machine to achieve a precision shaft alignment. There are many limiting influences that could cause you to not be able […]

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Uncoupled Shaft Alignment – It Doesn’t Need To Be Difficult.

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By on October 13, 2014

The night before the OJT portion of a recent Fixturlaser GO Pro Training class, at a Combined Cycle Power Plant, the shim packs of the disc type coupling between a 3300 HP electric motor and fluid drive began to fail. The machine was shut down before any damage could occur and was waiting for our […]

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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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VIDEO: Concepts of Shaft Alignment – Measuring Runout

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By on August 28, 2014

The 4th video in VibrAlign’s Concepts of Shaft Alignment video series is entitled  “Runout”. The video describes what runout is and depicts how to properly measure for runout to determine if coupling eccentricity and/or a bent shaft is the source of the runout. The video series was based on ideas for visualizing alignment created by […]

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Don’t Overlook “Hidden Shims” Under the Feet!

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By on August 15, 2014

A recent Fixturlaser EVO class performed an alignment check on a 35HP, 1750 RPM electric motor and chill water pump set. The initial set of alignment results indicated horrible angular misalignment (14 to 16 times tolerance) and offset misalignment (6 to 8 times tolerance) in the vertical and horizontal planes. Before making corrections, pre-alignment checks […]

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Creative Sensor Mounting When Flexible Couplings Limit Space.

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By on July 17, 2014

In this situation, there is little or no room to mount the laser sensors to the motor and pump.  What would you do?  You could remove the entire coupling and do an “uncoupled alignment”.  Or, be creative…                       Remove ½ the flexible coupling.  Then mount […]

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Using a Laser Shaft Alignment System to Check for Pipe Strain

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By on July 7, 2014

Pipe strain is a relatively common problem seen in pump installations. It is a cause of premature bearing and seal failure. Here is a link to an excellent article from Pumps and Systems magazine that discusses the detrimental effects of pump strain. http://www.pump-zone.com/topics/seals/how-do-plant-pipe-strain-problems-affect-my-pumping-systems You can easily measure the effects of pipe strain using dial indicators […]

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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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