Bearings: Understanding the Role of Rolling Elements

What is the function of the rolling element in anti-friction bearings compared to plain bearings?

a. Lubricant

b. Race

c. Seal

d. Housing

Final answer:

The rolling element in anti-friction bearings serves the same purpose as the lubricant in plain bearings. They both significantly reduce friction between the moving parts, avoiding direct contact between bearing surfaces, preventing wear and tear.

Explanation:

The rolling element in anti-friction bearings performs a similar task to the lubricant in plain bearings. They both are primarily responsible for reducing friction between the moving parts of the bearing. In plain bearings, the lubricant creates a thin film that separates the bearing surfaces and avoids direct metal-to-metal contact, preventing wear and tear. Similarly, in anti-friction bearings, the rolling elements, whether they may be balls or rollers, roll between the inner and outer race reducing friction.