NCCER Millwright Practice Exam

Question: 1 / 400

What is the function of a bearing in machinery?

To connect two different machine components

To reduce friction between moving parts and support loads

The function of a bearing in machinery is to reduce friction between moving parts and support loads. Bearings achieve this by providing a smooth surface for rotation or linear motion, which minimizes the wear and tear on components. By allowing parts to move with less resistance, bearings enhance the overall efficiency and longevity of machinery. They also help to maintain the alignment of rotating elements, which is essential for the smooth operation of machines. Proper installation and maintenance of bearings are critical to ensuring optimal performance and preventing premature failure of machinery.

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To transmit power from one part to another

To increase machine speed and efficiency

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