Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


Minimum practicable linear actuator stroke

Minimum practicable linear actuator stroke

Minimum practicable linear actuator stroke

Hello everyone!

I'm working on some mechanical system which requires linear actuator to be set in motion. Motion limits are narrow and my first study therefore produced the required stroke of an actuator of about 1 mm. I guess it is too little? Shall I take care to increase the required stroke? Or is it practicable and I will actually be able to successfully control it with 1 mm motion? If not, what is the recommended minimum stroke? The system is light and doesn't require powerful actuator.


RE: Minimum practicable linear actuator stroke

Strokes of 1mm are not that rare. They are used in high frequency sinusoidal testing. In your case you don't need force. Is the amplitude fixed? If so one easy way of getting a 1mm stroke is to spin an eccentric cam on a motor. If different amplitudes are necessary then use different cams. The problem with ball screw/lead screw systems is that they will wear in that 1mm of travel.

Peter Nachtwey
Delta Computer Systems

RE: Minimum practicable linear actuator stroke

1mm is really lousy for ball screw type stuff, as Peter mentions a cam would be much better. Also, piezoelectric, or voice-coil, or galvanometer are all good candidates.

Look in Laser World Magazine if you want high accuracy small movement platforms.

Keith Cress
kcress - http://www.flaminsystems.com

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close