This spring applied brake caliper is basically the same as the air applied configuration, but uses a different actuator, which requires fluid pressure to release the brake. The fluid pressure is absolutely proportional to the brake force. Increasing the pressure will decrease the brake torque, and decreasing the pressure will increase the brake torque.

All 5019 brake caliper models can be used in either hydraulic or pneumatic applications, since its "O" ring and piston construction will not be damaged by hydraulic fluid. The spring applied actuator is available with many spring combinations, including adjustable springs, for various brake torques.

The standard brake lining supplied by Kobelt is asbestos free, and was engineered to provide a coefficient of friction of approximately 0.45 to 0.55. The lining remains fairly stable up to 7500°F (400°C).

The brake shoe bearings are detachable from the) brake shoe itself. This design allows for the installation of shims between the bearing and the brake shoes. Installing shims between these two items will reduce the clearance between the brake shoes. The brake caliper for this reason can be adapted to various sizes of thickness. Maximum disc thickness however, is 3/4". The 5019 is available foot mount or side mount.

Important: Use only hydraulic fluid or air to apply this brake. Standard seals are NOT compatible with brake fluid.