Definition

Noun A brake disk is a flat, circular metal component that is rigidly attached to a vehicle's wheel and rotates with it. Pressure is applied to its surfaces by the brake pads to create friction, which slows or stops the rotation of the wheel.

Usage

The term brake disk is used to describe a specific part of a disc brake system in vehicles like cars, motorcycles, and bicycles. It is the primary component against which the brake pads clamp.

Examples

• The mechanic recommended replacing the worn brake disks during the service.
• High-performance cars often use ventilated brake disks for better heat dissipation.
• When you press the brake pedal, the caliper squeezes the pads against the brake disk.

Advanced Usage

• "Warped brake disk": A disk that has become uneven due to extreme heat, often causing vibration or pulsation when braking.
  • The steering wheel shudders because of a warped brake disk.
• "To machine/resurface a brake disk": The process of smoothing the surface of a disk to remove minor imperfections or grooves.
  • Instead of replacement, the shop can machine the brake disk if it's still within thickness specifications.

Variants and Related Words

• Disc brake (n): The entire braking system that uses a brake disk and caliper.
  • Most modern cars are equipped with disc brakes on the front wheels.
• Rotor (n): A common synonym for brake disk, especially in automotive contexts.
  • The front rotors need to be replaced.
• Brake drum (n): A different type of braking component used in drum brake systems, which is a hollow cylinder instead of a flat disk.

Synonyms

• Rotor
• Brake rotor
• Disc (in the context of brakes)

Related Phrases

• Brake disk and pad set: A kit containing both the disks and the pads for a complete brake service.
  • I bought a new brake disk and pad set for the front axle.

Noun

1. a disk or plate that is fixed to the wheel; pressure is applied to it by the brake pads