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 tolerance and the thermal growth will be compensated for. The real key to success, of course, is determining good targets. These are best obtained via…
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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 offline to running (OL2R) movement most often associated with thermal growth. A previous blog post (see link below) discussed how to read an alignment report…
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OL2R Measurements (Offline To Running) are used to collect very accurate (and actual) Thermal Growth Values and Targets for critical rotating machinery. Offset Measurements (Cardan Shaft) are critical for offset drives to ensure there is no angular misalignment causing lead/lag issues with the drive shafts resulting in production related quality problems. Both the OL2R and…
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Previous blogs have defined thermal growth of rotating equipment and discussed several different methods to calculate the cold (ambient) alignment targets to compensate for thermal growth. The OL2R program (Off Line to Running) of the Fixturlaser XA Pro allows the aligner to easily measure thermal growth (dynamic movement) and determine the correct cold alignment targets for…
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