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A survey conducted by one of the world’s leading rotating equipment service organizations shows that less than 10% of the 160 machines randomly chosen for measurement were found to be aligned within acceptable limits.

Shaft Alignment Tolerances
The above tolerances are for equipment running at 3600 RPM. Statistics courtesy of a UK chemical company.

It is important to align your machines to within specified tolerances and for that LUDECA has included Acceptable and Excellent Shaft Alignment Tolerances within their “Laser Align” mobile application. The application has an interactive Tolerance Table,  where the user can input his own machine RPM and the app will kick back the respective Alignment Tolerances for both short flex and spacer type couplings. It also includes a Thermal Growth Calculator and a Soft Foot Assistant to help the user interpret soft foot values.

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by Ana Maria Delgado, CRL