Figure 1 (above) shows three of the most common SMLA constructions: a motorized lead screw (MLS), motorized lead nut (MLN) and motorized linear actuator (MLA). Each of these constructions has a stepper motor, lead screw and nut at its core, but differ in how it obtains motion.
For MLS units, the lead screw attaches directly to the motor shaft, which translates the nut on rotation. MLN units integrate the nut inside the motor shaft, which when rotated, translates the lead screw instead of the nut. MLA configurations are essentially MLS units with additional components that house the lead screw and nut while also providing integrated support and guidance.
BRIEF INTRODUCTION
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