White PaperMotion Control

Factors To Consider When Choosing An Actuator of Four Feet Or Less

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Smooth motion, fast accelerations and a high degree of accuracy are hallmark requirements for linear movement actuators. Increasingly, miniaturization has added the additional requirement of compactness.

One system that can meet all of the above requirements in its conversion of motor torque to linear thrust is the single axis ball screw actuator. The ball screw actuator is a combination of a ball screw on which, to eliminate backlash, a slide block or nut’s movement is guided by recirculating steel balls that roll between the block and raceways of guide rails.

Choosing the most effective actuator for a particular application requires consideration of load capacity, operation speed, stroke length, environment, orientation, and positional accuracy These factors have to be identified and quantified.

This paper considers how component design affects these factors.

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