What is soft foot in relation to machine alignment?

Soft foot refers to a condition where a machine's base or foundation is not making proper contact at all four corners with the mounting surface, leading to a distortion of the machine frame. This misalignment can occur due to uneven or improperly leveled surfaces, wear, or damage to the machine's feet. When soft foot is present, it can contribute to internal misalignments and may affect the overall alignment of rotating machinery, leading to operational inefficiencies and increased wear on components.

Addressing soft foot is crucial in achieving precise machine alignment, as it ensures that forces distribute evenly across the machine base. This reduces the risk of excessive vibration, extending the lifespan of bearings and other components. While other choices touch on related aspects of machine alignment, the specific definition and implications of soft foot focus on the distortion of the frame itself and the resulting misalignment challenges that follow.