When excessive clearance occurs in a split Babbitt bearing, what is the recommended solution?

When excessive clearance occurs in a split Babbitt bearing, the recommended solution is to add shims. This approach serves to reduce the gap between the bearing and the shaft, ensuring a tighter fit and better load distribution. Shimming is particularly beneficial because it allows for a cost-effective and less invasive correction without the need to replace the entire bearing, which can be a more time-consuming and expensive process.

Adding shims effectively compensates for wear or deterioration that can lead to increased clearance, helping to restore optimal operating conditions. It is a common maintenance practice that can prolong the life of the bearing and improve the performance of the machinery.

In contrast, other options may not effectively address the root cause of the excessive clearance. For instance, replacing the whole bearing could be unnecessary and costly if the issue can be resolved simply through shimming. Increasing lubrication frequency may help reduce friction but does not directly correct the clearance issue. Similarly, adjusting shaft alignment is important for overall bearing performance but does not directly address excessive clearance in a split Babbitt bearing.