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Mechanical Engineering vocabulary · Machine Elements

Coupling

Meaning in mechanical engineering, with examples

/ˈkʌplɪŋ/nounCommon term

In mechanical engineering, coupling means: A device that connects two shafts, for example a motor and a pump, so that torque is transmitted between them. Flexible types also allow a small amount of misalignment.

In Turkish: kaplin, mil bağlantısı

How it is used

Used in machine design, installation and maintenance. Couplings are rigid or flexible; common types include jaw, gear, disc and grid couplings. Technicians check coupling alignment and replace worn rubber elements.

Example sentences

  1. Check the alignment of the coupling between the motor and the pump after installation.

  2. The rubber insert in the coupling was cracked, so we replaced it.

Common collocations

  • flexible coupling
  • rigid coupling
  • coupling alignment
  • jaw coupling
  • coupling guard
  • shaftA long, round rotating part that carries gears, pulleys or wheels and transmits power and torque from one component to another.
  • misalignmentA condition in which two connected shafts, for example of a motor and a pump, do not share the same center line, either because they are offset or because they are at an angle.
  • torqueA turning force that makes something rotate around an axis, such as a shaft or a bolt. It equals force times distance and is measured in newton meters (N·m).
  • pumpA machine that moves liquid through pipes by adding energy to it, raising its pressure or lifting it to a higher level.
  • vibrationA fast back-and-forth movement of a machine or structure. Too much of it can be a sign of a problem such as imbalance, misalignment or a damaged bearing.

More terms: Machine Elements

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