How many shims should be kept to a minimum when adding under the machine's foot?

When adding shims under a machine's foot, it is important to keep the number of shims to a minimum to ensure stability and effective load distribution. Using fewer shims, such as three or four, allows for a more rigid and secure installation. A minimal number of shims reduces the complexity of the alignment and helps to mitigate the risks of vibration and movement that can occur with an excessive number of spacers.

When shims are limited, it simplifies the process of leveling the machine and provides a better chance of achieving proper alignment. If too many shims are used, it can lead to difficulties in maintaining the machine's stability and can introduce unwanted flexing, which could affect the performance and lifespan of the equipment. Therefore, keeping the number of shims low is critical for optimal operation and longevity of machinery.