Captive linear actuator with built-in guider for linear movements. Moving part do not rotate.
Non-Captive linear actuator with nut inside motor. Linear moving part can rotate so it should be fixed.
External linear actuator. Nut are mounted on lead screw.
Captive (will be available for NEMA34 in the future) and External linear actuator in NEMA size 23 and 34 can be delivered with integrated driver or controller.
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