This document discusses different types of brake calipers, including fixed calipers with either 2 or 4 pistons, sliding calipers, and floating calipers. It also mentions how square seals retract pistons and includes information on wear indicators.

1. Fixed
caliper
4
piston

2. Fixed
caliper
4
piston

3. Fixed
caliper
2
piston

4. Sliding
Caliper

5. Floating
Caliper

9. How the
Square
seal
retracts
the
Piston

11. Wear
Indicator

12. Wear
Indicator

13. Electronic
Wear
Indicator