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

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What is the purpose of gibs or dowels on a pillow block housing?

To enhance the aesthetic value

For alignment and stability

The purpose of gibs or dowels on a pillow block housing is primarily for alignment and stability. These components help to precisely position the bearing within the housing, ensuring that it is held in the correct orientation during operation. Proper alignment is crucial for the effective functioning of bearings, as misalignment can lead to uneven wear, increased friction, and ultimately, bearing failure. By using gibs or dowels, the pillow block housing can resist movement and maintain stability, which is essential for reliable machinery operation.

The other options do not align with the primary function of gibs or dowels. While aesthetic value may be a consideration in design, it is not their main purpose. Reducing friction is more related to the bearing design itself rather than the housing components. Adjusting bearing preload typically involves other mechanisms or features, rather than gibs or dowels.

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To reduce friction

For adjustment of bearing preload

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