Definition

1. Noun:
   • A mechanical device that decreases rotational speed: A "reduction gear" is a component in a gear train that reduces the speed of rotation from a higher input speed to a lower output speed, while simultaneously increasing torque.

Usage

• The term "reduction gear" is used to describe a specific type of gearing system. It is typically a compound noun used in technical and mechanical engineering contexts.
• It functions as a countable noun (e.g., , , ).

Examples

• Noun:
  • The motor's high speed is converted to a more useful low speed by the reduction gear.
  • Installing a reduction gear allowed the engine to operate efficiently while driving the heavy machinery at a slower pace.
  • The design includes a reduction gear with a ratio of 10:1.

Advanced Usage

• "reduction gearbox": Often used synonymously with "reduction gear," it specifically refers to a housed assembly containing reduction gears.
  • The power is transmitted from the turbine to the propeller shaft via a reduction gearbox.
• "reduction gear ratio": Refers to the specific ratio of input speed to output speed.
  • Calculating the correct reduction gear ratio is critical for the application.

Variants and Related Words

• Speed reducer (n): Another common term for a reduction gear.
• Gear reduction (n): The process or effect achieved by a reduction gear.
• Reduction drive (n): A system or assembly that incorporates a reduction gear.

Synonyms

• Speed reducer
• Gear reducer
• Reduction drive

Related Phrases

• Step-down gear: A less common but descriptive synonym.
• Reduction gearing: Refers to the system or arrangement of gears that provide speed reduction.

Noun

1. gearing that reduces an input speed to a slower output speed