You probably did not lubricate the calipers when you changed them and they are sticking. Or its entirely possible that the rotors are too thin. Always clean and lubricate the brake assembly before reassembly.
Brake calipers are the hydraulic devices that wrap around the rotors and pinch the brake pads into the rotors when you stop.
NO! Brake Calipers are what compress your Brake Pads on to the rotor which turn simeultaniously with your wheels.
F1 brake calipers are made of aluminium.Here is quotation from the Technical rules:11.2 Brake calipers:11.2.1 All brake calipers must be made from aluminium materials with a modulus of elasticity no greater than 80Gpa.
Calipers frozen? Calipers frozen?
Brake calipers are what house the brake pads and fit over the rotor. If you are working on the brakes, usually the calipers need to be taken off in order to work.
You probably have a warped brake rotor. New rotors are fairly inexpensive, I would replace both front rotors and brake pads while your in there. The calipers and sliders along with the brake hoses and lines need to be examined also.
With the help from your foot and the master cylinder, the calipers provide the squeeze to the disc brake pads to the rotor.
You can buy a kit to rebuild the calipers. It is simpler and easier to buy rebuilt calipers.
Lift the vehicle on a car jack, remove the tire, remove the brake shoe/calipers, and remove the old brake pads. Put in the new brake pads, replace the brake shoe/calipers, replace the calipers, and lower the car.
Brake calipers are what squeeze the brake pads against the brake rotor.