Linear actuators with axially moving, open spindle are units consisting of worm or spur gear, fixed DC motor and trapezoidal thread spindle running through the gear. Linear actuators of this type impress with their simple design and high flexibility. A change of direction is achieved by a simple voltage reversal. This variant is the most economical way to generate a motorized linear motion. The combination with different gear reductions results in a large number of variants. In addition, the existing spindle can be replaced by spindles of various lengths, depending on the bearing arrangement. We will also be happy to advise you on a project-specific basis with regard to possible special designs.