Soft foot is defined as a condition where the machine’s feet do not lie in the same plane as the base. Machine frame distortion is the result of changes that occur internally or externally to the frame of the machine. This often causes a shaft deflection or movement as the hold-down bolt is tightened when a soft foot condition exists. Another common problem is indicator sag, which is the effect of gravity on a fixture. This module teaches participants to detect and correct soft foot and bar sag.
