Posts tagged with: “bolt bound”

Correcting for base bound or bolt bound conditions.

| | | | |

By on June 12, 2017

A question often asked during our training classes is how to deal with base bound and/or bolt bound conditions when performing a precision shaft alignment on rotating machinery. Base bound is the vertical condition that occurs when the moveable machine needs to be lowered but is “bound” by the base due to an insufficient number […]

Read More

Environmental Impact on Precision Shaft Alignment

| | | | |

By on July 6, 2016

We work with clients in many types of harsh climates, from cold with rain, sleet, snow & ice to hot humid and hot & dry and everything in between. Whatever the climate, the need for equipment maintenance intensifies with the severity of the climate.  Harsh climate conditions will create situations where precision shaft alignment of […]

Read More

Bolt Holes – Size matters!

| | |

By on April 28, 2016

I was asked to help a customer align a 500HP Motor / Blower.  The new motor came in on a skid, was lifted into place with a crane, new electrical boxes fitted and coupling put into place.  Now the easy part, the precision shaft alignment! We took two sets of measurements which repeated.  Made one […]

Read More

Soft Foot Concerns In The Stationary Machine?

| | |

By on January 27, 2016

VibrAlign has numerous blogs on soft foot and the frustration that goes along with not eliminating it. Repeatability (or the lack of) can be a major issue. Vibration analysis will pick it up if it is severe enough. When performing a precision shaft alignment most, if not all, soft foot will be eliminated in our […]

Read More

Bolt Bound Prevention?

| | |

By on March 10, 2015

On numerous occasions I have witnessed brand new pump skids where the electric motor was already bolt bound. Bolt bound is common in all industries. While conducting the field alignment portion of a precision shaft alignment training class at a chemical plant in southeastern Georgia, I had the opportunity to witness innovation at work to […]

Read More

A Little Shim Can Make a Big Difference

| | |

By on February 9, 2015

To the casual observer, precision shaft alignment of large machinery may look like “grunt work” a task that only requires a strong back. But those of us who perform shaft alignment know it is moving big heavy machines to within very small tolerances. As such, small movements can often make big differences in alignment quality. […]

Read More

“Electrical Pipe Strain?”

| | | | |

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 […]

Read More

Machine Train Shaft Alignment Tricks

| | |

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 […]

Read More

IS VIBRATION INTERFERING WITH YOUR PRECISION SHAFT ALIGNMENT?

| | | | | |

By on July 1, 2013

During a recent Fixturlaser XA Pro training class, at a Texas petrochemical plant, we were performing an alignment on a 25 HP, 3600 RPM electric motor & water pump.  At first the class was having a little trouble bringing the alignment into the 3600 tolerance due to two separate issues. The first was severe vibration […]

Read More

Bolt Bound? No Alternate Move Calculator? No Problem!

| | | | |

By on May 10, 2013

Previous blogs have discussed several different solutions for solving Base Bound & Bolt Bound conditions when preforming precision laser shaft alignment (Base/Bound Math and Solving Base/Bound Alignment Alignment Problems). Sometimes though, the solution for a Bolt Bound issue is fairly straight forward and what you need to do is right in front of your eyes […]

Read More

The Shaft Alignment Nightmare

| | | | | |

By on April 10, 2013

Sometimes precision laser shaft alignment is a quick, neat, orderly maintenance task.  And sometimes, it is not!  Occasionally, everything that can be wrong IS wrong. While teaching a Fixturlaser Go Pro training class in Illinois, the class went into the plant for some “hands on” shaft alignment work.  The machine chosen was a 25 HP […]

Read More

Base/Bolt Bound Math

| | | |

By on March 12, 2013

Base-bound and bolt-bound problems do not need to be the end of your machine alignment. It just means the original rotational centerline of the stationary machine we want the movable machine to be co-linear with isn’t a practical solution. Most of the high-end laser alignment systems today have some kind of calculator to show alternate […]

Read More

What if you had to leave a machine slightly misaligned? What would you choose, angle or offset?

| | | | | | |

By on December 19, 2012

As alignment professionals we all want to do the right thing and perform the best shaft alignment possible; however there may be a time when you have to choose and knowingly leave a machine slightly misaligned for the short-term until other corrections can be made to the equipment to get it to an “alignable” condition. […]

Read More

Solving Base-Bound and Bolt-Bound Shaft Alignment Problems

| | | |

By on November 12, 2012

If you align machinery for a living then more than likely you have encountered machines that are base-bound or bolt-bound. Base-bound is when the movable machine has to be lowered and there are either too few or no shims under the movable machine feet to accomplish the vertical alignment. Bolt-bound is when the movable machine […]

Read More

That’s A Bad Sign

| | | |

By on April 6, 2012

A manufacturing operation in western North Carolina recently purchased a Fixturlaser GO and shaft alignment training. This company is going through a multimillion dollar expansion. We decided, as part of the training, to check some alignments of recently ‘installed and precision aligned’ machinery. Tags like these were placed on the machines that were supposedly precision […]

Read More