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It looks like a hydraulic clamp. When hydraulic pressure is applied with the brake pedal, the caliper clamps the disc brake pads to the disc brake rotor to stop rotation.
If you can see the brake caliper and rotor, then it has disc brakes. If all you see is a large drum then it has shoes. If you can see the front brakes thru the wheels, you can identify disc brakes. If the rear look like the front, then they are also disc brakes. However if the rear look much different, then chances are they are drum.
The Nubira has no brake drums, it has disc brakes on all 4 wheels.
disc brake components
The rotor is the disc in the disc brake system.
worn thin
In case of cost..drum brake is better than disc brake.
Most modern cars have disc brakes on the front wheels, and some have disc brakes on all four wheels. This is the part of the brake system that does the actual work of stopping the car.The disc brake is a lot like the brakes on a bicycle. Bicycle brakes have a caliper, which squeezes the brake pads against the wheel. In a disc brake, the brake pads squeeze the rotor instead of the wheel, and the force is transmitted hydraulically instead of through a cable. Friction between the pads and the disc slows the disc down.Vented disc brakes have a set of vanes, between the two sides of the disc, that pumps air through the disc to provide cooling.
There are many purposes to using a disc brake. Disc brakes are mainly used in industrial drills because the disc brake stops the drill gently so it doesn't overheat.
Depends on the vehicle; could be drum/shoe arrangement with cable actuation; could be rear disc brake pads with cable or could be rear disc brake with inner shoe and drum inside the rotor.
Disc brake pads and drum brake shoes
pad brakes are disc brakes, it's known as changing brake pads for disc setup and changing brake shoes with drum brake setup.