Vibralign Blog

backlash| coupling backlash| non-repeatability| Precision Shaft Alignment| Repeatability

By Mac MacCormack on March 21, 2019

Although we have many excellent blogs on the cause of non-repeatability, or more commonly known as frustration when attempting a precision shaft alignment, this issue continues to come up nearly every training session I conduct. And the number one cause? Not controlling backlash or looseness. All the trainers teach this and VibrAlign has a very […]

"Hot Check"| Hot Alignment Check| Pre-Alignment| Precision Shaft Alignment| VibrAlign Training

By Tom Shelton on March 7, 2019

One question that arises regularly in training is about doing alignment checks. Is it okay to just check the alignment? Of course, it is. As a matter of fact, many industries have dedicated crews to specifically do alignment checks. The major difference is no equipment is moved, just measured. We lockout, remove guards, install the […]

"jacking bolts"| horizontal alignment| jack bolts| Precision Shaft Alignment| push bolts

By Mac MacCormack on January 16, 2019

A common source of frustration during the precision alignment process is, how can we make a controlled move when making the horizontal adjustment? We trainers often hear our clients say they don’t have jacking bolts, or pushers, etc. There have been numerous excellent blogs written on the subject of jack bolts. Pry bars, sledge hammers […]

Balancing| Machinery maintenance| Precision Shaft Alignment| shims| soft foot| Vibration Analysis

By VibrAlign Author on January 7, 2019

As you may have noticed if you follow VibrAlign’s social media accounts, we have been going through “Maintenance Tip Mondays” for the past couple months. This is a fun opportunity to hear from our experienced technical trainers as they share the top tips and tricks they have learned over the years in the field and […]

"shaft alignment tools"| Laser Alignment tools| Precision Shaft Alignment

By Tom Shelton on December 20, 2018

Preparation is the key to efficiency. Having an appropriate selection of tools and necessary supplies on hand will make a precision shaft alignment fast, accurate and easy. One way to do this is to have a dedicated alignment cart or job/work box. Some facilities are not conducive to the little casters on some carts, so […]

"c-face motor"| Alignment tolerances| looseness| Precision Shaft Alignment

By Tom Shelton on November 20, 2018

This is as much a title for a blog as it is a question. One our Technical Trainers once stated that to align rotating machinery, they must first be alignable. What is meant in part by this is that when we have a collinear tolerance of 0.5mil /1” angularity and 2.0 mils offset, the machines […]

"vertical shaft alignment"| Fixturlaser EVO| Precision Shaft Alignment

By Mac MacCormack on November 14, 2018

This month marks my 41st year of being involved in industrial maintenance. Early on during my apprenticeship in a machine shop, as an outside machinist, I thought living long enough to know everything was not going to be possible. Even now I am reminded of this from time to time. I am also reminded that […]

Alignment tolerances| Precision Shaft Alignment| shaft alignment tolerances| tolerances

By Tom Shelton on October 15, 2018

VibrAlign and Fixturlaser have done what we can to make the precision shaft alignment process quicker and easier for the end user of our tools. To assist maintenance personnel during an alignment a tolerance table “pops up” on the display unit screen (of our tools) when entering dimensions for the machines being aligned. The tolerances […]

"jacking bolts"| hold down bolts| jack bolts| Precision Maintenance| Precision Shaft Alignment| push bolts

By Tom Shelton on September 20, 2018

Correct fastener torque is important for proper assembly of rotating machinery components to machine bases. Proper torque insures that the fastener will perform as designed. This will in turn help your machine to perform as designed. Hold down bolts and jacking bolts are typically manipulated while performing a precision shaft alignment. These are often the […]

"torque wrench"| aligning machinery| bolt torque| hold down bolts| maintenance reliability| Precision Shaft Alignment

By Tom Shelton on June 27, 2018

One of the most under-rated procedures of the precision shaft alignment process is the TIGHTENING SEQUENCE of the hold down bolts on the movable machine. Also, tightening the bolts to proper torque specifications is many times considered unnecessary and is just not typically done. Tightening sequence and proper bolt torque are critical to the performance […]

Documentation| Fixturlaser NXA Pro| Fixturlaser NXA Ultimate| Precision Shaft Alignment

By Stan Riddle on May 23, 2018

When a machine is checked, and found to be out of alignment, the “as found” alignment data can be saved.  Soft foot checks and corrections can also be saved. Continue with the alignment, and when in tolerance save the “as left” alignment. Exit to the Main Menu of the NXA, then press the File Cabinet […]

"shaft alignment"| Alignment tolerances| Pre-Alignment| Precision Shaft Alignment| soft foot| troubleshooting

By Mac MacCormack on May 15, 2018

One of the many things I love about my job is the numerous challenges we face during the field alignment portion of our Precision Shaft Alignment Training. Prior to the training, there were some repeatability issues when attempting to perform a precision alignment on this piece of equipment. One of the main causes of non-repeatability […]

Machinery Installation| Machinery Installation and Best Practices| Machinery maintenance| Precision Maintenance| Precision Shaft Alignment| precut shims| shims

By Tom Shelton on May 3, 2018

The difference between luck and success is this; Luck is when you achieve a desired result despite mistakes made along the way. Success is when you follow a known process to achieve the expected result. When attempting a precision shaft alignment, precise practices must be followed. One thing for certain in precision alignment is the […]

"cooling tower alignment"| Alignment tolerances| Cooling Towers| offset and angularity| Precision Shaft Alignment| spacer shaft| spacer shaft alignment

By Michael Keohane on April 25, 2018

The majority of precision shaft alignments are relatively close coupled where there are only a couple of inches between the shaft ends of the driver and driven elements. Close coupled alignment quality is traditionally displayed as angle (driver to driven) and offset (at the center of the coupling). The question is what do you do […]

bar sag| dial indicator alignment| Precision Shaft Alignment| Repeatability| rim and face| rod sag

By Steve Gordon on April 17, 2018

And it just may be a lot more than you would think. While visiting a customer site to do an alignment check using the EVO laser alignment tool on a 1750 HP Electric Motor / Boiler Feed Water Pump / 3574 rpm, measurements were taken several times (x3) to make sure the values were repeatable.  […]