track actuator?

[micro_builder]

Hey folks,
I'm hoping someone here might be able to point me in the right direction.  I'm looking for a track actuator, something like this, but with a 4 inch stroke.  Only has to push/pull about 5 pounds at the most, 6v preferably, and as fast as possible.

Anyone know a company that has something like this?  I've checked a number of different sites, but havent found quite the right one.

Thanks!
Nick

[Soeren]

Hi,

I'm hoping someone here might be able to point me in the right direction.  I'm looking for a track actuator, something like this, but with a 4 inch stroke.  Only has to push/pull about 5 pounds at the most, 6v preferably, and as fast as possible.

You can always limit a longer stroke, but perhaps this will do?
Or do you need the track?

[micro_builder]

The shorter stroke requirement is due to the small size of what I'm building, as is the track.  The track actuator itself will be contained inside a housing, with the track arm being on the outside.  It needs to be compact and the linear style actuators are just too long.

Thanks though
Nick

[Soeren]

Hi,

Not sure if these will do, but they're several times faster and have a resolution down to 40nm (resolution and precision are different animals however).

(They're both linear actuators btw. as opposed to rotary actuators).