How to Make Your Car Last Forever: Avoid Expensive Repairs, Improve Fuel Economy, Understand Your Warranty, Save Money

Here we have a cutaway drawing of a complete disc brake unit. Note how the caliper sits over the rotor, and
the pads are seated on each side of the rotor face. The caliper is bolted directly to the steering knuckle,
securing it and allowing it to follow the rotor wherever the wheels are turned.