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Brakes, as you know, are the components that slow, stop or hold a machine stationary. On Cat® machines they are located at the wheels of wheel-type machines (such as this off-highway mining truck) and on the axle shaft in track-type machines.

Brakes usually work by pressing a non-rotating surface, such as a brake shoe, against a rotating surface (aka brake drum). The resulting friction stops the machine. At this point where the two meet, the inertial force of the machine is sometimes converted into bake-oven heat.

The braking requirements of various types of machines differ, because of differences in the work they do. To assure each type of Cat machine has the braking system that best suits its needs.

Caterpillar uses four types of brakes:

  • Expanding shoe
  • Caliper Disc
  • Wet Disc
  • Expander Tube