Alignment, Vibration & Balancing Knowledge center

ARTICLE

Shaft vs. Foot Alignment Tolerances

When two machines are directly coupled via a flexible coupling, any misalignment between their centerlines of rotation can result in vibration which can produce premature wear or even catastrophic failure of the machines' bearing, seals, the coupling itself, or other rotating components. The worse this misalignment between shaft centerlines, ther greater the rate of wear and likehood of premature failure of the machines

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RESOURCES

Shaft Alignment: Return On Investment

Consider this: A plant with 200 machines at an average of 30 HP and a Mean Time Between Failure (MTBF) of 36 months are aligned once per year using dial indicators. With the same conditions and a laser alignment tool, the following could be improved by 30 minutes, the average alignment would be improved from 6-3 mils and the MTBF could be increased by 10% (very conservative). The resulting savings from reduced power consumption, man power requirements and increase of MTBF would approach $40,000 per year!!!

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APPLICATION NOTES

Field Balancing under difficult conditions

Increased machine vibration is an undesirable phenomenon that is detrimental to product quality, places components under additional strain and reduces operational reliability. Imbalance is the most common cause of increased levels of vibration.

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Online Condition Monitoring of Pumps

High pump availability is essential in many industrial applications. Continuous condition monitoring helps avoid malfunctions, aids in recognizing wear process and detects bearing damage early on.

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