FREE: Introduction to Uptime Elements Reliability Framework and Asset Management System

Measuring machinery misalignment with today's tools, particularly computerized laser alignment systems and well-designed bracketing, is no longer as difficult a task as it once was, when all you had were a straight edge, feeler gauges and maybe a set of dial indicators with some make-shift hardware.

Why then, is it that aligning the machinery to given target values is still so often cumbersome and time-consuming? There may be several reasons, among them unnecessarily tight tolerances specified by the machinery vendor, or problems with worn-out bearings, inadequate bases, lack of jackscrews, etc. But by far the greatest obstacle to expeditiously reaching your alignment goal is a soft foot condition. ‘Soft foot', or machine frame distortion can be measured by various means, and indeed it must be measured and corrected before proceeding with the alignment. Why? Simply because an uncorrected soft foot condition will make alignment a trial-and-error procedure because the calculated corrective shimming and lateral moves no longer bring you to the expected results. Severe soft foot may also be quite harmful to the machinery itself.

Correcting soft foot may not be easy, but it is worth every minute that you spend on it, because once done, the alignment of the machines becomes a much easier task.
Many alignment systems available today have soft foot measuring programs, and the most advanced system even features a soft foot ‘wizard' which analyzes the type of soft foot measured (there are a number of different soft foot conditions) and suggests how best to correct it.

Conclusion: If you want to make aligning your machinery easier, quicker and more accurate, start by correcting soft foot.

Click here to Watch a Soft Foot Tutorial

Tip provided by LUDECA, INC.

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