dead axle

Thân thiện

The mechanic inspects the dead axle under the large trailer.

Definition

1. Noun:
   • A non-rotating axle that supports a wheel but does not transmit power to it: A "dead axle" is a fixed axle that carries the weight of a vehicle and supports a wheel, but it does not rotate to drive the wheel. It is a passive structural component.

Usage

• Noun:
  • The term is used primarily in mechanical and automotive engineering contexts to describe a specific type of axle assembly.
  • It is often contrasted with a "live axle," which is an axle that both supports a wheel and transmits driving power to it.

Examples

• Noun:
  • The trailer uses a dead axle, so its wheels are not powered by the engine.
  • In this vehicle design, the front axle is a dead axle, while the rear axle is a live axle that provides propulsion.

Advanced Usage

• Technical Distinction: In complex vehicle designs like some trucks or trailers, a "dead axle" may be referred to as a "tag axle" or a "pusher axle" when discussing its specific location and load-bearing function, though these terms can have nuanced differences.
• Historical Context: Early automobiles and carriages frequently used dead axles, especially for non-steering, non-driving wheels.

Variants and Related Words

• Live Axle (n): An axle that both supports a wheel and transmits driving torque to it.
• Axle (n): The central shaft for a rotating wheel or gear.
• Beam Axle (n): A rigid axle that connects a pair of wheels, which can be either a dead or live axle.

Synonyms

• Non-driving axle: An axle that does not deliver power to the wheels.
• Fixed axle: An axle that does not rotate.
• Tag axle (in specific contexts): An additional, non-powered axle close to the drive axles on a truck.

Antonyms

• Live axle: A driving axle.
• Drive axle: An axle that transmits power from the engine to the wheels.

Related Phrases/Idioms

Học thuật

Noun

1. an axle that carries a wheel but without power to drive it