... LT30 LT40 LT50 LT63 LT802.Configuration: worm and worm gear,bearing,housing and lead screw3.Function: Elevating, Lowering, Pulling, Pressing ... , Pushing,Rotating4.Power Source: Electrically5.Characteristic: Positioning precision, Safely self-locking, Heavy duty, Uniform lifting speed, small sizes, easy ... ,brake,trunnion base,limit switches,coupling,link shafting. self-locking linear actuator