Blog

How Can You Eliminate Unbalance of a Coupling? Here Are Some Key Points!

May 5, 2020

  Many shafts have keyways cut into them to hold the coupling. “Keys” are pieces of square metal stock inserted to hold the hub in place. If there are two (2) keys, one on each side of the coupling, you should not “align” the keys across the coupling. Instead, it is very important to ensure […]

What is Grease?

April 28, 2020

Tremendous science goes into engineering the many grease formulations that keep physical assets working their best. The sheer number of grease types available is as varied as the applications where they are used. Yet their composition remains a simple mixture of base oil, thickener, and in most cases some additives. The Base Oil is the […]

The Importance of Correcting Sheave Run-Out

April 21, 2020

Today’s advancements in technology have allowed many maintenance tasks to be performed more easily and efficiently. Such is the case with using a laser alignment system to accomplish sheave/pulley alignment. However, prior to setting up the laser system to perform the alignment, one important and often overlooked step is to measure and correct sheave run-out. […]

Make Sure To Include These 8 Steps To Your Vibration Analysis Process!

April 14, 2020

Every person that performs vibration analysis develops his or her own analysis process.  Suggested steps at a minimum should include: Open the spectrum (FFT) and locate the running speed peak and reset the reference speed to that speed.  Since all induction motors vary in speed based on the load, this is necessary for accurate analysis, particularly at […]

Take FIVE for SAFETY. 5 Minutes, 5 Takeaways and 5 Steps for Safe and Reliable Work.

April 7, 2020

Once again, I was struck by a smart sign that reminded me of the importance of safety: “TAKE FIVE for SAFETY.” This one popped up while touring the APM Training and Development Center in Houston, Texas after our #NoExcuses for Equipment and Bearing Failures workshop. It was the perfect closing theme to a day of learning […]

A Case Study On Why Pipe Strain Needs To Be Measured

March 31, 2020

Repost from Benchmark PDM Maad Blog   Let us review this case study on a common issue when working on a pump and motor alignment done by Brian Franks, Owner and Field Service Technician of JetTech Mechanical. He begins in the normal manner entering the distances of the machine. As you can see this is […]

What are SDT Ultrasound Solutions Four Condition Indicators?

March 24, 2020

There are four condition indicators RMS, Max RMS, PEAK, and Crest Factor. Easy to explain and use, it can give you an overview of an assets health with just one reading. Let’s go over them in more detail: RMS – use it to indicate trends in friction levels (lubrication, stage 1&2 bearing failure) Max RMS […]

A Before and After of Alignment on a Caterpillar Engine mated to an Ariel Compressor

March 18, 2020

Better Running Conditions from Precision Alignment We performed an alignment as part of a yearly check on a Caterpillar G3606 engine mated to an Ariel JG-D compressor. Documentation was established to track the performance of the equipment before and after the alignment. Before alignment: The engine was running overloaded, consuming more fuel than budgeted, and […]

What is the True Root Cause of Bearing Lubrication?

March 10, 2020

Bearings vs. Lubricants_ Regreasing Commenting to Ana Maria Delgado CRL with LUDECA, about the bearings and the lubricants that keep them operating, it occurs to me to write about a point of view that few people observe. When we talk about lubricants, and regularly when referring to bearings, we talk about grease. Where the grease […]

The Battle Versus Single Axis or Triaxial Sensors!

March 3, 2020

A sensor generally measures 95% of what it’s capable of measuring in line with the sensor. Two common types of vibration sensors are: Single axis accelerometers Triaxial accelerometers So which one is best for your application? A single axis sensor simply measures vibration in only one axis, so the sensor can be moved to the […]

Case Study: Bore Alignment with Easy-Laser E950 on a Split-Casing Pump

February 25, 2020

Our colleges at Benchmark PDM recently had a request from a customer to do some pump alignment. When we normally think about pump alignment, we usually think of shaft to shaft alignment. In this case, they wanted bore alignment. They were installing a brand-new pump and when they rotated the shaft, they could hear grinding. […]

Why Lubricate?

February 18, 2020

It seems a simple question, yet when asked, the answers are not always similar, or simple. Some say, “to fight friction” and that is true. We do add grease to an asset’s moving parts to reduce friction. But there’s more to it than that. Some say, “to reduce heat” and that is also true. The […]

Shaft Alignment: What are the Setup Basics?

February 11, 2020

You’ve always heard the adage, “S” Laser on the Stationary and “M” Laser on the Movable.”  In this day and age, however, this “truism” has almost become obsolete. You see, the concept of the “stationary” machine, per se, is obsolete. ALL machines CAN be moved if they really need to be (no machine grew out […]

Do you know what “Grease Worms” are?

February 4, 2020

I attended a training recently on the Easy-Laser XT770 alignment system at an oil and gas fracking company in West Texas. During the training I heard the term “grease worms” and even though I have been in the lubrication field for 29 years, I was unfamiliar with this animal. Come to find out, it is […]

Three Myths About Greasing Bearings

January 28, 2020

Once you understand how grease actually works to lubricate a bearing, it becomes obvious why over-greasing causes so much trauma to both bearings and the grease itself. Remember, all we want from our lubricant is to provide a little separation in the war zone. Nothing more… nothing less. If you’re reading the term “war zone” […]

What Impact Does Precision Maintenance Have On Your Equipment?

January 21, 2020

I’m sure you have heard how important precision maintenance is to the health of your equipment, but have you ever seen the real impact it has? Recently, to show this point within my company, we did some training to demonstrate how restoring a machine into a precision state can make a real difference. We divided […]

We picked out our top 10 blogs of 2019! Check them out.

January 14, 2020
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Happy New Year! As we look back at 2019, we’re excited to share our Top 10 Blogs with you. Our blogs represent a significant collection of topics and content, all of which we hope you’ll find interesting and constructive. They each provide educational information focused on content that is compelling and answers both easy questions […]

Is the Machinist Precision Level the Right Tool for Baseplate Installation for Rotating Equipment?

January 7, 2020

Baseplate tolerances, such as cited in ANSI/ASA Alignment S2.75-2017, specify that a baseplate must be level to <10 mils/ft, coplanar to <2 mils and each foot must be flat to <5mils.  The machinist precision level is typically specified to be 0.5 mils per 12”.  Automatically, it is assumed that this is sufficient for baseplate installation […]

Phase Measurement: What is it for? And how you can use it to diagnose failures in 2020.

December 10, 2019

First one must know what the definition of phase is in the reliability world.  Phase is simply the relationship between two events.  There is absolute phase that is usually measured as either “phase-led”, which is from the peak in a filtered time waveform to the tachometer, or once per revolution indicator, or “phase-lag” which is […]

Lubricant Viscosity Explained

December 3, 2019

Introduction Simply stated, viscosity is defined as the internal resistance of a fluid to flow. That doesn’t sound too difficult, does it? Unfortunately, new temperature, speed and pressure demands on lubricating fluids have changed over the years, resulting in several different measurements and classifications being created to describe lubricant viscosity. Some examples are SUS, cSt, […]