Offset misalignment in alignment setups is measured off of which part?

In alignment setups, offset misalignment is typically measured from the rim of the coupling or sheave. The rim is the outer edge of these components and provides a clear, consistent reference point for measurement. This area is crucial because it allows for a direct assessment of how much offset exists between two coupled components. Proper measurement of this offset is essential for ensuring proper alignment, which is critical for the efficient operation of machinery and to prevent wear or damage.

While the face, shaft, and feet can be involved in other types of measurements or considerations during alignment, they do not serve the primary purpose of directly measuring offset misalignment. The face refers to the flat surface where two couplings meet, the shaft is the rotating element that connects them, and the feet are the mounting points. These parts play important roles in the alignment process, but when specifically addressing offset misalignment, the rim is the part that provides the most accurate reference for determining the degree of offset between components.