Posts by: Tom Shelton

Understanding the Need for Offset Shaft Alignment

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By on January 22, 2014

While at facilities across the country I noticed a lack of understanding regarding the need for precision alignment of offset shaft driven rotating equipment. I myself have seen electricians and mechanics alike becoming frustrated trying to determine the cause of speed fluctuations and vibration in offset shaft driven equipment. Typical response is that the cause […]

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“Where can I get alignment specifications?”

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By on December 3, 2013

This is a question that comes up surprisingly often in our training classes. The question is usually regarding Thermal Growth offsets (dynamic movement) and shaft alignment tolerances. There are several ways to obtain the data in question. The easiest and most readily available would be the equipment manufacturer. Most companies will supply specific offset and […]

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Balance Your Couplings

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By on October 16, 2013

Balancing your couplings is not essential to a great precision shaft alignment, though it is an essential part of a job well done. As part of your prealignment steps/checks, the keyways of the driver and driven machine shafts should be set 180 degrees apart from each other. This will help to correct any influence that […]

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The Tools of the Precision Shaft Alignment Trade

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By on July 11, 2013

Efficiency is a critical element in today’s maintenance environment. In every aspect of maintenance, the right tools are necessary to complete a job quickly and efficiently. When performing precision shaft alignments in the field, there are tools that are typical to almost every job. Aside from the tools that are included in the case with […]

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The Devil is in the Details!

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By on May 29, 2013

During the field alignment portion of a Fixturlaser GO Basic shaft alignment training class, we were attempting to align a 100 H.P., 3600 RPM  motor to a double suction pump. Sounds easy enough! Here’s the skinny… The pump and motor were the top set in a vertical, two unit skid made of I-beams and very […]

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