Posts Tagged ‘soft foot’
Plan Your Work for Quick Alignments
We have been teaching maintenance personnel to use the Verti-Zontal Process to perform precision shaft alignments quickly for years. The key to quick alignments is to follow the Verti-Zontal plan which includes the pre-alignment steps Obviously when alignment checks are done, the pre-alignment steps aren’t performed on the “front end” of the alignment however they…Read More
Rolled Steel Frame Electric Motors
In the precision shaft alignment business, we encounter all types of electric motors. One type we come across are “Rolled Steel Frame” (RSF) motors. These motors have a frame housing and feet that are made from mild, rolled steel. They range from very small up to about 25hp. They are common in many industries; however,…Read More
When an Alignment Check Turns into Starting from the Beginning.
A recent NXA Pro training class performed an alignment check of a winch driven by an 80 HP, 1800 RPM, DC electric motor with a gear style coupling. The initial results revealed a misaligned machine, with a vertical angularity over 13 times the tolerance of 0.7mils/1” (1.0 mil = .001”), vertical offset six times tolerance…Read More
The One Tool Missing in Most Aligner’s Toolboxes
I am going to pass along to you a gift – one that I believe could potentially cut your alignment times-maybe by more than half! One that could lessen loosening and tightening bolts, reduce frustration, and increase your “alignment” confidence substantially! Would you like such a gift? Well, here it is – measure your shim…Read More
Other Influences to Precision Shaft Alignment Results
Over the years we have fielded several technical support calls from maintenance personnel having repeatability and soft foot issues (during an alignment) all of which had a common issue; other influences. Meaning not the typical looseness, coupling backlash, soft foot issues. During the “heat of the battle” to get the precision shaft alignment job finished…Read More
Get out of Trouble Before You Get into Trouble!
It really doesn’t matter the industry; industrial maintenance technicians suffer the same frustrations when performing a precision shaft alignment. Our team of trainer’s travel all over the country conducting training classes for paper mills, steel mills, chemical plants, gas and oil, etc. What we hear is universal across all industry. “I can’t get repeatable results,…Read More
Fudging Your Shims? Go The Same Direction.
When performing a precision laser shaft alignment, it is best to add or remove shims exactly as the display unit indicates. There are circumstances when this may not be possible due to your assortment of shims, or when you want to “fudge” your shims slightly to keep the total number of shims low. (Clink for…Read More
Shaft Distortion and Electric Motors
Although shaft distortion due to misalignment affects more than just the electric motor, here are a few things that are a telltale signs you may have an alignment issue. In a perfectly straight shaft, the centers of each shaft cross-section from end-to-end of the shaft lie on a straight line. A shaft is bent if…Read More
If It Moves Your Laser Will See It
Laser Shaft Alignment tools are a great asset for today’s maintenance professional, enabling them to perform precision shaft alignments to very tight tolerances; and do so quickly when using the VibrAlign Verti-Zontal Process. Laser alignment systems are a tool and as such show the user what is occurring “mechanically” during the alignment process, including if…Read More
MACHINERY VIBRATION PROBLEMS-CAUSES AND SOLUTIONS, PART 1
Machines vibrate for lots of different reasons-some good, others not so good. Over the next few months, we are going to write about some of the most common machinery vibration causes, and possible solutions. COUPLING MISALIGNMENT One of the most common problems in coupled rotating equipment is misalignment. Simply stated, misalignment is when the driving…Read More
Short-cuts, a way to make Precision Shaft Alignment take longer.
I love my job, I love conducting precision shaft alignment training at various facilities across this great country and interacting with industrial maintenance technicians that have suffered through or are suffering through the same issues I did. I love proving over and over again that the VibrAlign method of precision shaft alignment is the best…Read More
Soft Foot Concerns In The Stationary Machine?
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
Common Precision Shaft Alignment Questions Asked In Our Training Classes
While training mechanics all around the US, I have noticed that many of the questions asked in class are the same regardless of the industry. Fixturlaser tools are very intuitive and easy to use, so this puts the mystery on the alignment process. So here are some answers to some common alignment process related questions…Read More
Clean, Clean, Clean! To Eliminate Soft Foot!
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…Read More
Flatness for Shaft Alignment-Revisited
A reader of our blog posted a comment stating that he could not cut a step shim to correct for angular soft foot, since it was not permitted in API standards. Which, naturally, made me do two things: • Look at API Standards, because, at least in my 33 years of aligning machinery, I have…Read More