Definition

Noun: - Ball-bearing: A mechanical component consisting of a set of steel balls held within a ring (race), designed to reduce friction between rotating parts, such as in wheels or motors.

Usage Examples

• Noun:
  • Xe đạp này cần thay ổ bi. (This bicycle needs its ball-bearing replaced.)
  • Ổ bi bị hỏng gây ra tiếng ồn khi động cơ hoạt động. (A damaged ball-bearing causes noise when the engine operates.)
  • Công việc của anh ấy là lắp ổ bi vào các trục quay. (His job is to install ball-bearings onto rotating shafts.)

Advanced Usage

• Technical/Engineering Context: The term is used almost exclusively in mechanical and engineering contexts to refer to the specific component.
  • Thiết kế này sử dụng ổ bi để giảm ma sát tối đa. (This design uses ball-bearings to minimize friction.)

Variants and Related Words

• Vòng bi: A synonym for ổ bi, also meaning "ball-bearing" or "bearing." It is often used interchangeably.
  • Cửa hàng bán các loại vòng bi công nghiệp. (The store sells various types of industrial bearings.)
• Bạc đạn: A common vernacular term in Vietnamese, especially in informal or workshop settings, for ổ bi.
  • Chiếc máy này kêu vì bạc đạn bị khô. (This machine is noisy because its bearing is dry.)

Synonyms

• Bearing (n): A more general term in English for a machine element that constrains relative motion and reduces friction between moving parts. "Ball-bearing" is a specific type of bearing.
• Rolling-element bearing: The technical category that includes ball-bearings.

Related Phrases (Technical Terms)

• Ổ bi đỡ: Radial ball-bearing (designed primarily to support radial loads).
• Ổ bi chặn: Thrust ball-bearing (designed to handle axial loads).
• Hỏng ổ bi: Ball-bearing failure.
  • Nguyên nhân sự cố là do hỏng ổ bi. (The cause of the breakdown was ball-bearing failure.)

noun

1. ball-bearing