Servo motor usually has the braking function. Generally braking refers to the back end of the servo motor, servo motor brake installed in the back end of the motor, working through the brake pad acting on the main shaft of the motor, the motor brake and hold the motor spindle.
And the electromagnetic mechanical lock device generally plays an emergency protection role, such as a sudden power failure during operation, the driver can not provide the braking function, the servo motor brake will play a role, lock the motor shaft to avoid accidents.