This kind of brake consists of springs, armature, rotors and spline housing. This is a kind of device by losing electric power to realize brake. When electric power effect , with the electromagnetic affection, armature will be attracted .Springs are compressed and rotors with other relative splines housing and motor shaft will turn around freely. When losing electrical power, the electromagnetic disappear. Springs open again and the armature will force the rotors closely. This will make the relative splines housing and motor shaft brake.
Characters: small size, high efficiency, safety reliable.
Application: widely used in variety of internal rotors traction machines.