Certified Maintenance and Reliability Technician (CMRT) 2025 – 400 Free Practice Questions to Pass the Exam

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What do you achieve by matching gibs or dowels on a pillow block housing?

Increased weight capacity

Improved lubrication flow

Accurate alignment of components

Matching gibs or dowels on a pillow block housing is primarily intended to achieve accurate alignment of components. This alignment is critical in machinery where shaft and bearing integrity directly affects overall performance and longevity.

When gibs or dowels are matched properly, they provide a precise fit that ensures the components work together within their designed tolerances. This precise alignment reduces vibration and wear, thereby increasing the reliability of the machine. In rotating machinery, for instance, any misalignment can lead to uneven loads, which could cause premature failure of bearings or shafts.

While other options may seem plausible, they do not capture the essential purpose of matching gibs or dowels in this context. Maintaining accurate alignment is paramount in ensuring optimal performance and durability of mechanical assemblies, making this the correct answer.

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