Opening of brake callipers:
To open the brake callipers, 24V DC power will be supplied to the
internal electrical motor. The rotating motor shaft is connected to the
ball screw, which translates the rotating energy into a linear movement,
thereby winding up a preloaded spring package and retracting the piston.
Once the desired piston stroke length is reached, the motor will shut off and a
small holding brake
will retain the spring loaded stored energy.
Closing of brake callipers:
interrupting the power supply to the holding brake the spring loaded
energy will be gradually released by winding down the ball screw and
extending the piston. No electrical energy is required during the
brake operation. The
actuator hereby provides a fail safe and jerk-free brake function.
The second function of the brake in a power failure or shut down
situation performs as a vehicle holding brake .
built-in force measurement system tracks the force exerted over the
thrust-tension piston onto the brake shoe and allowing a gradual, quasi continuous soft braking.
brake control mechanism and our patented brake force electronic
control system manages the brake force sensitivity level and compensates
for brake shoe wear and tear.