How Does a Bearing Work – Types of Bearings, Lubrication, Friction and Bearing Failure Explained

How does a bearing work and why is it essential in engines, electric motors, vehicles and industrial machinery? This detailed evergreen educational video explains the working principle of bearings, including how rolling friction replaces sliding friction to reduce energy loss and wear. It covers bearing construction with inner and outer rings, rolling elements and cages, explains Hertzian contact stress and load distribution, and compares different types of bearings such as ball bearings, roller bearings, needle bearings and plain bearings. The video also explores lubrication regimes, contamination risks, installation errors, temperature effects and the most common causes of bearing failure. Ideal for students, engineers, mechanics and anyone who wants to understand the physics and engineering behind rotating machinery components. #bearing #howdoesabearingwork #mechanicalengineering #tribology #machinery #industrialengineering #rollingfriction #lubrication #engineeringexplained #evergreen