ELECTRIC LINEAR ACTUATOR...IS THERE SUCH A ONE 5

[cryovette]

Anyone know of any linear actuators out there that are capable of a 50lb - 100lb full load with a stroke of 3" - 10" and a travel speed of 33" per second or greater (with applied full load)? The catch is that it has to be 12vdc with as small of an amp requirement as possible. Thank you for any input you can provide!

 

[roydm]

cryovette,
I don't think you will have much luck finding that speed. I just recently purchased 6 Linak LA12 actuators for a mining application. They make a nice 130mm stroke actuator in 12 or 24 VDC.
3 different models List price ~$160 US$
750 Newtons 14 mm/s
300 Newtons 27 mm/s
200 Newtons 40 mm/s

http://www.linak-us.com

http://www.linak.co.uk

http://www.linak.ca

Hope this helps

 

[tygerdawg]

I haven't done any calculations, but my gut feel is that if you performed the dynamics analysis to determine inertia, torque, force, accelerations, and power, then your 12VDC motor doesn't have sufficient power.

Web-search & download "Smart Motion Cheat Sheet" in PDF format for the formulas.

The only other way I could see this happening is using the 12VDC motor to store up energy (springs, flywheel, air pressure) and then release it to move your load. But then the problem becomes a matter of how often the release is required, and can your system store energy that quickly.

TygerDawg
Blue Technik LLC
Virtuoso Robotics Engineering

http://www.bluetechnik.com

 

[sreid]

Possibly Exlar.

http://www.exlar.com/

 

[roydm]

Another possibility

http://www.danahermotion.com

their fastest seems to be 3"/sec
Regards
Roy

 

[ScottyUK]

Claimed to be capable of speeds greater than 50m / minute. That's over 30" / second.

http://www.powerjacks.com/Special-Electric-Linear-Actuators.htm

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If we learn from our mistakes I'm getting a great education!

 

[sreid]

A sanity Check.

100 lb @ 2.75 ft/sec = 275 lb-ft/sec = 0.5 HP

0.5 HP = 746/2 = 373 Watts

375 Watts/ 12 Volts = 31 Amps.

is this "Small Amps"?

 

[ScottyUK]

It depends who you speak to - it's totally subjective which makes it a meaningless spec to everyone except the author.


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If we learn from our mistakes I'm getting a great education!

 

[plasgears]

Sounds like a car seat actuator with DC motor and acme screw. You can find one in salvage to play with, or procure as repair parts in auto supply.