For the front caliber pins you can get special disc break caliber lube.
As for your problem it could be a whole lot of things.
Do the inexpensive stuff first.
Caliber pins.
Check your lower control arm, ball joints and tie rods for ware. Any movement of the front tires during breaking can cause vibration (often mistaken for bad rotors).
A damaged flexible break line (you canā??t tell by looking at it) will restrict fluid as it returns to the master cylinder. This will delay break release and cause hi temps and pulling. Sometimes this is mistaken for a bad caliber.
Check all four disks and hubs for run-out.
jeff