To align two machines with a 45 mil gap on the top and a 25 mil gap at the bottom, which shim moves are required?

When aligning two machines with a larger gap on the top than at the bottom, the objective is to decrease the difference in the gaps to achieve proper alignment. In this case, with a 45 mil gap at the top and a 25 mil gap at the bottom, the difference is 20 mils, and the shimming requires a specific adjustment to address this discrepancy.

By lifting machine A by 80 mils and machine B by 40 mils, we effectively bring the two machines closer together, which will help to equalize the gap. Lifting machine A increases the gap on that end while simultaneously lowering the gap at the bottom, while lifting machine B decreases the gap on that side. In essence, these adjustments are designed to bring both ends of the machines into a level position, allowing for proper alignment across their entire length.

This approach results in reducing the larger gap at the top while improving alignment at the bottom, ensuring that the machines work efficiently and effectively together. Adjusting in this manner creates a balanced positioning conducive to optimal operation.