Electric linear actuators are presented in many guises and styles. From a miniature unit with 20mm of stroke to a body length less than 50mm up to a 10-meter-long actuator that can move mass measured in tonnes.
The miniature Actuonix linear actuators come in many different variants and include models that can be driven directly from 12V dc, RC controls or arduino.
Crouzet also offer miniature stepper or servo motor driven actuators with 10mm stroke and positional accuracy to 0.01mm.
Larger industrially rated units from Servomech can be designed and configured to suit your application. Featuring DC or AC power over most of the range and options, these high-quality linear actuator units with up to 100% duty cycle.