Comparing External Linear, Non-Captive and Captive Linear Actuators

Описание: The key differences between an external linear, non-captive, and captive motor is, the External Linear motor has the screw affixed to the rotor, so it rotates external to motor body, like a DC motor; The Non-Captive screw travels freely in and out of the motor body and does not rotate; The Captive has a short screw that is held mostly inside the motor body, coupled to a spline. External linear motors are most akin to motorized rails where the nut is replaced by a driven carriage assembly. Non-Captive is generally the shortest overall length assembly, while the Captive is the longest.