Vibration data was taken on a motor/pump during initial training on the Acoem Falcon. This pump was chosen based on history and a visual inspection. The visual inspection pointed towards…
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Acoem alignment systems allow the user to input thermal growth (offline to running) targets prior to performing a precision shaft alignment. Using targets allows the alignment to be completed to…
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Recently I came across a new pump skid where an alignment check was performed after installation during new construction. Even though it did not have much run time there were…
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According to the International Organization for Standardization (ISO), unbalance is “that condition which exists in a rotor when the vibratory force or motion is imparted to bearings as a result…
Read MoreKnowing the correct rotational speed is critical when performing machinery diagnostics. A strobe light can be an excellent tool for determining speed. Look for a unique mark such as a…
Read MoreAlthough most machines are aligned with the coupling installed there are occasions where it is better to align a machine uncoupled. A couple of considerations: 1 – Shafts are rotated…
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We often get asked why we don’t input a coupling diameter when performing a precision shaft alignment with the ACOEM laser alignment systems. The coupling diameter (or more correctly sweep…
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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…
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The Fixturlaser level is calibrated to earth level out of the box. If the level is used without a fixture it reads level directly. If a fixture is used, however,…
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The Fixturlaser Level is a high precision two axis digital machinist level. The primary application is base leveling. The Fixturlaser Level offers the following advantages: Two axis live measurement Calibrated…
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The validity rule is an important concept in precision shaft alignment. It can be used to confirm that your readings are accurate and is why we don’t have to rotate…
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Unbalance (Imbalance) is often defined as the unequal distribution of the weight of a rotor about its rotating centerline. A rotor can be balanced either in-place or in a balancing…
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The goal of a precision alignment is to align the machine within tolerance when at operating condition. Many, but not all, machines are aligned without the need to compensate for…
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Many modern laser alignment systems include inclinometers that aid in the alignment process. Inclinometers, however, don’t work on vertically oriented machines. These include vertical “C” faced machines as well as…
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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…
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