If the service chamber of a 30/30 spring brake chamber has an application pressure of 50 psi acting on its service diaphragm,how much linear force is delivered to the slack adjuster?

Question

Quizplus · Accepted Answer

The force delivered to the slack adjuster is equal to the application pressure multiplied by the area of the service diaphragm. The area of the service diaphragm is equal to the square of the diameter of the diaphragm multiplied by pi. The diameter of the diaphragm is 30 inches, so the area of the diaphragm is 30^2 * pi = 900 * pi square inches. The application pressure is 50 psi, so the force delivered to the slack adjuster is 50 * 900 * pi = 1500 lbs.

If the Service Chamber of a 30/30 Spring Brake Chamber