Posts Tagged ‘Pre-Alignment’
Don’t Forget a Lift Check!
A lift check isn’t always done when performing a precision shaft alignment, nonetheless excessive lift can be the cause of alignment frustration. Here is a recent example from a very experienced aligner. This particular alignment was on a 150 HP motor driving an extruder through a gearbox. The horizontal alignment came in as…Read More
Don’t Be Tempted!
Often the OJT portion of our training classes begins with an alignment check of a rotating piece of machinery in the client’s facility. This comes after numerous alignments in the classroom, on the training fixtures, performed by the attendees. They are then ready to apply their skills learned on the classroom training equipment in their…Read More
Pre-Alignment with the RT-300
ACOEM-VibrAlign has shared over 100 separate blog posts and over 1 million YouTube views on Pre-Alignment. Thus, we can all agree it is an important topic and the key to a successful precision shaft alignment job. No matter if you are using a Straight Edge, Dial Indicators, or the latest and greatest Laser Shaft Alignment…Read More
The Importance of Mechanical Skills in the Data Center: Precision Shaft Alignment
Knowing how to perform a precision shaft alignment is important when it comes to maintenance skills. Whether you are using dial indicators or a laser alignment tool (if you are in the market for either, we have several options here), being able to achieve an accurate, repeatable alignment is key. A few reminders: The…Read More
It’s the Little Things Revisited
During a recent training class at the facility of a client who had their initial Shaft Alignment Best Practices training class 5 years prior, I found out none of the previous class attendees were still in maintenance. The “new” guys never had anyone show them the proper use of their laser and most had no…Read More
Alignment Check vs. Alignment
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…Read More
Are Shims Causing a Soft Foot Issue?
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…Read More
Channel Strut as a Motor Sub-base?
At first thought it may sound like a good idea as the specialized fasteners in the channel make it easy to tighten the motor hold down bolts, however in reality it’s a cause for precision shaft alignment issues. Here’s why. A good pump/motor base is engineered to meet specific standards (IE: ANSI, API, etc.) with…Read More
Challenging, But Not Impossible!
As we trainers travel around the country conducting precision shaft alignment training, we often run into some fairly harsh work environments during the field portion of the training. At times the equipment that needs to be aligned is caked in product from spills or leaks. This can create a significant challenge when attempting a precision…Read More
The Soft Foot Primer (Part 3) How to REALLY Minimize Soft Foot Every Time
It is both possible, and desirable, to minimize the negative effects of soft foot. While it may be difficult to completely get rid of soft foot, it can typically be reduced to a few mils, if the following techniques are used. PREPARATION AND CLEANLINESS CLEAN! If you remove the motor, wipe the feet clean, before…Read More
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
What is the Fixturlaser NXA Runout Probe?
Acoem USA has introduced the Runout Probe, an accessory device for the NXA Pro. I (as a jaded, grizzled old millwright-but a good “company man”) was outwardly excited. But inside, I thought, what’s the big deal? It’s an electronic dial indicator. That’s what I thought – until I took it for a test drive! I…Read More
The Cure for Alignment Frustration!
A customer called me, extremely frustrated, because he could not get a good alignment. “I’ve spent two hours trying to align this stupid pump!” he said. He blamed the laser, the “cheap” pump his company had, the bad base, his bad trainer (me), and anything else that came to mind. I did not take it…Read More
Roughing In Before Precision Shaft Alignment
Some people believe that precision laser shaft alignment has evolved to the point where pre-alignment steps, such as roughing in the alignment with a straightedge, are no longer needed. Well, quite frankly, those people are wrong! The reason for roughing in the alignment has little to do with how accurately the lasers/sensors measure. It has…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