Linear actuators with high mechanical accuracy

Help & Support Robot Parts
1

Good day.

Do you any linear actuators with high mechanical accuracy( backlash error equal or less 0.05mm).
We have or own accurate positioning system, so we don’t need a precision feedback system, because we are going to use our own, but finding a linear actuator with such mechanical characteristics seems to be a problem.
However, it seems to me, that actuators based on threaded rod should do the trick.
So the question is do you have any precision(well, semi-precision) linear actuators?

Best regards, Stanislav.

2

Before looking into backlach, what force and stroke do you need? How do you plan to control it? Do you need positioning or just speed and direction?

3

stroke: 4-10 inches models can be considered
force: 20N is a minimum requirement.

We have our own positioning system with 0.05mm accuracy.
So that, there are 2 options:

  • to use a linear actuator with embedded positioning system if there are models with at least 0.1mm accuracy.
  • to use a linear actuator with just speed and directional control with low mechanical error and integrate our positioning system.

Best regards, Stanislav.

4

All linear actuators: robotshop.com/en/actuators.html
Some ideas:
robotshop.com/en/firgelli-te … ntrol.html
robotshop.com/en/firgelli-te … -06-p.html
robotshop.com/en/firgelli-te … -12-i.html
You can see more details about each product in the “Useful Links” section.

Examples of longer stroke, but no feedback:
robotshop.com/en/10-in-strok … uator.html
robotshop.com/en/firgelli-au … uator.html

They are all based on lead screws.

5

According to there specifications the backlash error is 0.2mm.
And that is quite big value for lead screw actuators.