Friction brake ROBA®-alphastop®

electromagneticspringmechanical

The ROBA®-alphastop® is an electromagnetic safety brake actuated by quiescent current. The ROBA®-alphastop® is installed in an existing design between the server motor and the bell housing simply and without modification. When de-energised, coil springs press against the armature disk. The rotor is held between armature disk and flange plate. The shaft is braked via the toothed hub. When the current is switched on, a magnetic field is built up. The armature disk is pulled against the spring force to the coil carrier. The brake is released and the shaft can run through. *Not suitable for use in liquid media. Product features Application ✓ Holds axes securely in any position. ✓ Optimal for vertical axes ✓ Optimal for handling large weights Mounting position ✓ A-bearing side on servo motors (also Fanuc) Safety ✓ Safe due to fail-safe principle ✓ Switching status monitoring ✓ Suitable for EMERGENCY STOP braking Benefits ✓ Short switching times Design ✓ Electromagnetic Features ✓ Complete unit with backlash-free shaft coupling (metal bellows, elastomer or disk pack couplings) ✓ Available with output shaft for direct mounting on hollow shaft gearboxes ✓ Available with adapter kit for adaptation to different shaft distances Construction - Protection class ✓ Closed brake housing ✓ Mechanical: Protection class IP 10 ✓ Electrical: Protection class IP 54 Assembly and maintenance ✓ Simple assembly ✓ Axial positioning to the shaft not necessary. Sound ✓ Not silenced Temperature ✓ Insulation class F Duty cycle ✓ Applicable for 100 % ED