Re: Cost of linear actuators

"eganders" <eganders@xxxxxxxxx> wrote in message
news:1194062608.043010.8310@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I have an application where I have to move a 3 lb object in a 3
ft
cubic space. I am not looking at high performance or high
accuracy.
It can take as much as 30 seconds to traverse the 3 ft distance
and
the accuracy could be no better than 0.020 or 0.050 inch
(possibly the
spec could be even looser).

Linear actuators would appear to be the best solution, but I am
finding that they are hundreds or even thousands of dollars.
The
product I want to build will have to cost no more than $2,000
for a 3
axis device with controller, overhead and profit.

What is it in a linear actuator that costs so much that you
could not
build a low cost version using a threaded rod, servo or stepper
motor
and an extruded frame for a lot less?

Does anyone know of a linear actuator that can provide the kind
of
performance I am looking for for a couple hundred dollars?


Yep, www.cnczone.com
is a good place for this question and they'd be happy to help.
They have a forum for Linear Motion and forums for building
3-axis tables, even have plans/drawings.

I Googled "linear actuator" and on the first page found this:
http://www.firgelliauto.com/product_info.php?cPath=87&products_id=64

$99

so I'm sure what you're looking for is out there.


.

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