Linear actuators for mechanical project

[aortucre]

Hey guys, I was wondering if you could help me out here. I'm working on a project that needs two fast linear actuators which I'm planning to control with the Arduino logic board, but I can't seem to find anything that suits what I need. Here are the specs.

-Type of actuator: Linear
-Minimum acceptable speed: 100 mm/s
-Minimum acceptable load: 5kg
-Input: Signal from Arduino UNO logic board
-Frequency: Approx 10 Hz

I would appreciate any help that you guys could give me. All the actuators that I've found online are either too weak or too slow.

 

[billblack]

Dependent on the duty cycle required you could possibly overvolt http://www.servocity.com/html/25_lbs__thrust_linear_actuator.html
these @ 24VDC and get the 100mm/sec required.
If the actuators need to run more than intermittently, I would contact ServoCity about their recommendations. They've been easy to work with for this sort of thing in my experience.

 

[Jupiter6]

Max travel?

 

[aortucre]

Max travel?

Around 18"

 

[Jupiter6]

This looks like it will work:

http://www.firgelliauto.com/product_info.php?cPath=114&products_id=234

You can wire up a DPDT relay for each actuator to be controlled by the Arduino. Though with the 10hz signal I suspect you'd be better off with something like a high-current analog switch IC. (high-current solid state relay)