What are the Functions of Brake Pads?

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Functions of Brake Pads:

Brake pads convert the KE (Kinetic Energy) of the vehicle to thermal energy through friction. Two brake pads are contained within the brake with their friction surfaces facing the rotor. When the brakes are hydraulically applied, the caliper clamps or squeezes the 2 pads together onto the spinning rotor to slow and stop the vehicle. When a brake pad heats up because of contact with the rotor, it transfers small amounts of its friction material onto the disc, leaving a dull grey coating on that. The brake pad and disc (both now having the friction material), then “stick” to every other, providing the friction that stops the vehicle.


Disk Brakes:

In disc brakes, there are usually two brake pads per disc rotor. These are held in place and actuated by a caliper affixed to the wheel hub or suspension upright. Racing calipers, however, can utilize up to 6 pads, with varying frictional properties in an exceedingly staggered pattern for optimum performance. Looking at the properties of the fabric, the load of the vehicle, and also the speeds it’s driven at, disc wear rates may vary. The brake pads must usually get replaced regularly (depending on pad material) to forestall brake fade. Most brake pads are equipped with a way of alerting the motive force when this has to be done.

A common technique is manufacturing a tiny low central groove whose eventual disappearance by wear indicates the top of a pad’s service life. Other methods include placing a skinny strip of sentimental metal in an exceeding groove, specified when exposed (due to wear) the brakes squeal audibly. A soft metal wear tab may also be embedded within the pad material that closes an electrical circuit when the brake pad wears thin, lighting a dashboard red light.

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