BXR is a holding brake as well as emergency brake. The thickness is 2/3 of our conventional brake and the shape is designed compact that realized less space for installation. The biggest advantage is the light weight of the rotor. That can reduce the wear of rotor at idling time very successfully. The brake with low inertia can be assembled without damaging the responsiveness of the servo motor. Also, the energy-saving design with low capacity can reduce temperature rise of the coil.