What is bent foot condition in shaft alignment?

Bent foot is the condition when the foot is touching the base on the outside portion, but the inside of the foot is bent, creating an angle between the base and the bottom of the foot. When the hold-down bolt is tightened, the foot will deflect and distort the machine frame, depending on what portions of the frame will bend. A bent foot is a type of soft foot that occurs when the bottom of foot is not coplanar, meaning that the foot slopes from one corner to another. The foot may also be bent upward so that the outside edge is not touching the base and the deflection occurs along the outside of the foot. The best way to correct bent foot is to remove the equipment and machine the foot, the base plate, or possibly both.