Other Topics

Using the Verti-Zontal Process on Wind Turbines with Adjustable Chocks

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By on January 15, 2020

  Precision shaft alignment of wind turbine generators mounted on adjustable chocks is as straightforward as when aligning rotating machinery mounted on chocks down at ground level. In the case of a recent NXA Training Class in a Vestas V82 we knew before going up-tower that one revolution of the adjustable chocks equals 1mm. Also, […]

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Compressors, Drivers and Alignment Considerations

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By on January 9, 2020

The two main types of compressors are dynamic and positive displacement. The positive displacement compressor is probably the one you’re most familiar with.  It traps gas in a volume and then decreases that volume.  The decrease in volume causes a rise in pressure. A dynamic compressor uses a rotating element (usually called an impeller) which […]

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Flatness Measurement Repeatability, Part 2

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By on January 2, 2020

In a previous blog written by Brad Case (Sept 24, 2019), he explained how to perform a repeatability test and why it is good idea to do so. Here are few other items that have contributed to repeatability issues. 1)      The top rails were not sufficiently clean prior to taking readings. Paint was not removed, […]

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Identify Gaps in Knowledge with the Smart Machine Checker!

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By on December 16, 2019

At a recent Fixturlaser Smart Machine Checker (SMC) training class, one particular pump came up during the discussions. This pump has been “a problem child” for years. It had been rebuilt recently by one of the class attendees. The mechanic had rebuilt the pump “just as it had come apart” and was certain the impeller […]

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This Could Be Difficult!

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By on November 6, 2019

For the field portion of a recent training class, the decision was made to check the alignment on a plastic extruder. At first glance, checking the alignment of the motor shaft to gearbox input shaft is pretty straightforward. However, the output side of the gearbox had two shafts, so maybe this is not so straightforward. […]

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Balancing How To #5 – How A Correction Weight and Location is Calculated

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By on October 9, 2019

In our last “How To” we talked about the trial run – using a trial weight and location, to calculate the amount and location of a correction weight, which should correct the unbalance.  Most modern-day balancing tools do the math for you.  Even though these tools calculate the correction weight and location, it is good […]

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Flatness Measurement Repeatability Test

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By on September 24, 2019

When performing the Ariel ER-82 Top Plane Compressor Frame Measurement, surrounding reciprocating compressors in operation may cause repeatability issues due to excessive vibration. To compensate for high/excessive vibration the Sampling Time (measurement time at each measurement location) in the Fixturlaser NXA Ultimate can be lengthened as needed. The NXA has a built in Repeatability Test […]

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Long Distance Rough Alignment with the Coning Method

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By on August 7, 2019

Recently, VibrAlign was called to consult with a customer to recommend a procedure and alignment tools for a very long-distance vertical pump alignment.  First, we will describe the machine and then how we aligned it.  This large raw sewage pump machine train begins at the driver level.  In this plant, floor levels are described by […]

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The Importance of Mechanical Skills in the Data Center: HVAC

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By on July 30, 2019

Knowledge of HVAC systems is essential for data center workers since heating, ventilation, and air conditioning are so integral to the data center. A good HVAC technician will be familiar with a wide range of HVAC systems, controls, and installation methods. The skills needed for a thorough knowledge of HVAC include: Knowledge of refrigeration Knowledge […]

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Balancing How To #4 – Calculating a Trial Weight Mathematically

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By on July 26, 2019

In our last Balancing How-To, I stated that an initial trial weight is sometimes a guess.  Sometimes based on experience, and sometimes on common sense.  But if you prefer to be a little more scientific about it, there are ways to calculate a good trial weight. There are a few requirements to calculate a trial […]

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RESOURCES

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By on July 16, 2019

I read that Albert Einstein once said, “I don’t need to know everything, I just need to know where to find it when I need it.” If one did some research, that may not necessarily be true. However, if a question comes up, it’s always helpful to have resources to refer to. When it comes […]

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The Importance of Mechanical Skills in the Data Center: Bearing Replacement

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By on July 15, 2019

A key purpose of vibration analysis is to detect bearing problems before bearings fail and damage is done. This, of course, means that bearings will need to be replaced.  Proper bearing extraction and installation is important to extending the life of bearings as well. First, it is important to know when you need to replace […]

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The Importance of Mechanical Skills in the Data Center: Pump Maintenance and Overhaul

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By on July 8, 2019

Are you prioritizing a regular, predictive maintenance routine for pumps in your facility? Implementing a PdM plan is important for any piece of equipment in your facility. It is essential for sustained function and efficiency of pumps, especially since it is estimated that they account for 25 percent of total motor system energy in the […]

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The Importance of Mechanical Skills in the Data Center: Belt installation, Tensioning, and Sheave Alignment

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By on July 2, 2019

Proper belt installation and tensioning and sheave alignment are essential in order for a facility to function at optimum efficiency. A key thing to understand when it comes to belts is proper sizing. Whether you are using a correctly-sized belt for your machine will have a significant impact on the machine’s ability to function at […]

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Proper RPM Set Up with the OneProd Falcon

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By on June 26, 2019

One key bit of data required when collecting data or analyzing it is accurately pinpointing the RPM. When we set up schematics in the Machine Set Up module  we tell the software what the RPM is here. When setting up a machine in the Nest you can choose either fixed speed, variable speed with keyboard, […]

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