brake drum
Definition
Noun: A brake drum is a hollow, cylindrical component, typically made of cast iron, that is fixed to a vehicle's wheel. It forms a key part of a drum brake system, providing a rotating friction surface against which the brake shoes press to slow or stop the vehicle.
Usage
The term brake drum is used specifically in the context of automotive and mechanical engineering to describe this particular part of a braking system. * The mechanic inspected the worn brake drum for cracks. * In a drum brake system, the brake drum rotates with the wheel.
Examples
- A loud grinding noise indicated that the brake drum might be damaged.
- The brake drum must dissipate heat generated during braking.
- They replaced the old brake drums on the classic car.
Advanced Usage
- Technical Context: In engineering specifications, the internal diameter and material composition of the brake drum are critical design parameters for braking performance and heat capacity.
Variants and Related Words
- Drum Brake (n): The type of braking system that uses a brake drum and internal brake shoes.
- Brake Disc (n): The contrasting component in a disc brake system, which is a flat, solid rotor clamped by brake pads instead of being an enclosed drum.
Synonyms
- Drum (n): A common shorthand in automotive repair contexts (e.g., "turning the drums" means machining the brake drums to restore a smooth surface).
Related Phrases/Compounds
- Brake drum lathe (n): A machine tool used to resurface the inside of a worn brake drum.
- Brake drum assembly (n): The complete unit including the brake drum and the hub to which it is attached.
Noun
-
a hollow cast-iron cylinder attached to the wheel that forms part of the brakes
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