Definition

Noun: - A type of bevel gear arrangement: Specifically refers to a pair of gears, a small pinion gear and a larger ring gear, that mesh at an angle (typically 90 degrees) to transfer power and change the direction of rotation between two shafts.

Usage

This term is used in mechanical and automotive engineering to describe a fundamental component within differentials and other power transmission systems. - The differential's pinion and ring gear set converts the rotational force from the driveshaft to the axles. - A worn pinion and ring gear can cause whining noises from the rear axle.

Advanced Usage

• "Pinion and ring gear set" or "ring and pinion set": Common alternative phrasings emphasizing the pair as a unit for replacement or specification.
  • The mechanic recommended replacing the entire ring and pinion set.

Variants and Related Words

• Ring gear: The large, circular gear with teeth on its inner circumference.
• Pinion gear: The smaller driving gear that meshes with the ring gear.
• Bevel gear: The general category of gears with conical shapes that mesh at an angle, which includes the pinion and ring gear configuration.
• Differential gear: A system that often incorporates a pinion and ring gear to allow wheels to rotate at different speeds.

Synonyms

• Bevel gear pair
• Crown wheel and pinion (common in British English)

Related Phrases

• Ring-and-pinion ratio: Refers to the gear ratio determined by the number of teeth on the ring gear versus the pinion gear.
  • A higher ring-and-pinion ratio provides more torque for towing.

Noun

1. gears that mesh at an angle