A ball bearing can be highly effective at reducing friction between two parts that need to move freely. There is some elasticity to the ball allowing it to support and move a range of bearing loads. "Small" bearing can be extremely useful in applications where space is limited.
Related industries:
1. High speed dental spindles.
2. Cooling fan motors.
3. Hard Disk Drive.
4. OA / AV equipment.
5. Semiconductor production facilities and machine tools.
6. Automotive parts.
7. Fishing Reels