I am considering your Actuonix L12 12v 100:1 actuator in a 50mm and 100mm stroke length. Do these units have the same linear resolution, or is the 100mm unit 1/2 of the resolution of the 50mm unit? (ie, will the 100mm unit travel twice the distance of the 50mm unit, per single unit change of input, or will they move the same distance per unit step, with the 100mm unit merely having twice the travel of the 50mm unit?)
What is the resolution accuracy of these two units?
Well, according to the datasheet for this series (found on the product page under Useful Links), you can notice the repeatability gets worse with longer stroke lengths.
This would most likely indicate the same system is used for positioning and therefore the longer the stroke the less precise the motion would be.
There is no specific/direct data on the accuracy of these, but the datasheet does specify a repeatability of ±0.3 mm for 50 mm stroke or ±0.5 mm for 100 mm stroke and a mechanical backlash of 0.2 mm for the entire assembly. Out of that, we can extrapolate that the system itself cannot have an accuracy (mechanically) of more than 0.2 mm and the positioning control itself would be ±0.3 or ±0.5 mm (possibly on top of the mechanical backlash).
