Minnesota Boiler License Practice Exam 2025 – All-in-One Guide to Passing with Confidence

Describing a bearing as "brass bound" indicates that the bearing has a brass shell or casing that holds the babbitt, which is a softer metal used for the bearing surface. This terminology conveys that the bearing is designed to be durable, as brass is commonly used to improve the strength and rigidity of the bearing.

It would imply that if the babbitt is all worn out, the brass structure is still in place to potentially support another layer of babbitt or to maintain the shape of the bearing. This helps in understanding how the bearing operates and its maintenance requirements. The use of brass in this context reflects the bearing's age and can indicate the durability or wear levels in the system.

In this context, the other options do not accurately describe what "brass bound" signifies; the bearing is not solely made of brass, it is not necessarily constructed with a ring that holds it together, and there is no direct implication about the use of brass bolts. The phrasing instead centers around the condition of the babbitt and the presence of brass as a support material.