Motors used for turnstiles are no selected randomly, but we should remember that better the motor better the turnstile. The performance of any machine with movable parts is fully dependent on the ability and stability of motor. The best motor means best turnstile.
Servo motors are closed loop control system, very accurate and precise. This type of motor can push or rotate an object with great precision and accuracy. So for specific angular movement, or distance, servo motor is the best choice. Servo motor is the combination of motor and sensors that runs through the servo mechanism. Based on operation of motor by DC or AC signal, these are referred as DC or AC servomotor. Since a very high torques us produced by servo motors, it finds suitable applications in toy car, RC helicopters and planes, Robotics, Machine etc.
Brushless motors or Stepped motors or sometimes called as BL Motor, completes one rotation in equal steps as the every motion cycle is divided into steps, simply it rotates its magnet. It is an electronically commuted motor with no brushes. The pulse of current is provided to the motor winding by the controller to control speed and torque of the synchronous motor. Here the permanent magnet rotate around the fixed armature hence armature is protected. Known for smooth operation and holding torque in stationary mode, it ensure large scale of stability & flexibility.
Brushed motors, here the field is stationary for producing flux while as armature winding are in rotation. Hence such motors are directly operated by the direct current power source. The speed is controlled by the electromagnetic field produced by the coil and torque is dependent on the current. Speed control is usually done by the variation in voltage or current using the variable resistors.
Nundnet turnstiles are equipped with the best motors manufactured to long last. The motors usually are designed exclusively for the turnstiles with well selected material from copper to core so that the failure rate is kept at bay. The six sigma principles are used to manufacture the motors with the error rate lowest in millions.