Definition

1. Noun:
   • A type of bearing containing small metal balls: A "ball bearing" is a mechanical component that uses small, hard balls to reduce friction between moving parts. These balls are typically housed within a ring-shaped raceway, allowing for smooth rotation with minimal resistance.

Usage Examples

• Noun:
  • The bicycle wheel spins freely because of the ball bearing. (The bicycle wheel's smooth rotation is enabled by this friction-reducing component.)
  • Replacing the worn ball bearing eliminated the grinding noise in the motor. (The component with small metal balls was replaced to stop the abrasive sound.)
  • Precision ball bearings are essential for high-speed machinery. (Accurate versions of these ball-containing bearings are crucial for fast-moving equipment.)

Advanced Usage

• "to have a ball bearing mind" (idiomatic, rare): To think or operate with great precision and efficiency, analogous to the smooth, low-friction function of the mechanical part.
  • As a strategist, she has a ball bearing mind, anticipating problems before they cause friction. (Her thinking is precise and reduces operational resistance.)

Variants and Related Words

• Bearing (n): A general term for any machine element that constrains relative motion and reduces friction between moving parts. A "ball bearing" is a specific type of bearing.
• Roller bearing (n): A similar bearing that uses cylindrical rollers instead of balls to reduce friction.

Synonyms

• Anti-friction bearing: A technical synonym emphasizing the primary function of reducing friction.
• Ball race: Another term for the assembly containing the balls and their raceways.

Related Phrases

• Ball bearing steel: A specific grade of steel known for its hardness and durability, used to manufacture the balls and races of ball bearings.
  • The component was forged from ball bearing steel to ensure longevity.

Related Idioms

• As smooth as a ball bearing: Used to describe an action or process that is very fluid and encounters no resistance.
  • The project handover was as smooth as a ball bearing. (The transition happened without any friction or problems.)

Noun

1. bearings containing small metal balls