Why Does the Brake Always Make Noise?

[SanAmir]

The reasons for constant brake noise: uneven or excessive wear of brake pads, abnormal retraction of brake calipers, excessive gap between brake pads and brake discs. Brake pads are consumables that gradually wear thinner during vehicle use. When the friction layer is nearly depleted, there is an alarm device at the edge of the brake pad, known as the wear indicator or limit metal piece. At this point, the wear indicator will rub against the brake disc, producing a sharp metal friction sound to serve as a warning, reminding the driver to replace the brake pads. Braking, also known as deceleration, refers to the action of stopping or reducing the speed of moving locomotives, vehicles, other transportation tools, or machinery. The general principle of braking involves fixing a wheel or disc on the high-speed shaft of the machine and installing corresponding brake shoes, bands, or discs on the machine base, which generate braking torque under external force.