Control.com - Nerds in Control

Looking for small linear actuator with stroke of 2-4 inches. Force requirement is only about 5-10 lbs. Firgelli's L12 model would be great however my application requires nearly a 100% duty cycle and they only offer 20%. Is this just due to heat buildup?? Size requirements are tight as both extended lenth and width and height must be minimized. Width and height MUST be less than 2" x 2". Control within 1/16" will also be necessary.

Any suggestions?

Most actuators have a rated duty cycle at the rated load. If it is a ballscrew actuator, you should be able to use the actuator at 100% duty cycle, but at much less than rated load. If it is an acme screw actuator, then you have to be more careful. An acme screw actuator with a plastic nut will overheat even with no load. It is best to contact the actuator manufacturer to let them guide to the correct actuator.

If you can use a ballscrew, the THK KR15 is really small and the precision units are nice.

Check out the Linak LA12. These are rated 100% with 12 or 24 VDC drive. I just purchased 6 of these.

Regards
Roy