Correct option is C
A bearing is a mechanical component used to support a rotating shaft while reducing friction and wear. Bearings allow the shaft to rotate smoothly with minimal resistance and are essential in machines where rotational motion is involved.
Bearings are typically placed at both ends of a shaft and sometimes in between, depending on the length and load on the shaft. They absorb radial and axial loads while ensuring alignment and stability.
· Used in engines, motors, turbines, conveyor systems, and gearboxes.
· Bearings are made from hardened steel, bronze, or polymers for durability.
Types of Bearings Used for Shafts:
1. Ball Bearings – Used for light to moderate loads and high-speed applications.
2. Roller Bearings – Suitable for heavy radial loads.
3. Thrust Bearings – Designed for axial loads.
4. Plain Bearings (Bushings) – Used in low-speed applications.
