🚀 Best Linear Actuator for DIY Robot Arm?
Hey guys, I’m building a small 3-axis robot arm for pick and place tasks. Need compact actuators with decent force (around 100-200N) and at least 150 mm stroke. Precision is more important than speed. Budget is limited so I don’t want super expensive servos. Anyone has experience with 12V linear actuators in robotics? Which ones are accurate and don’t have much backlash?
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For hobby robot arms in this force range the best budget-friendly and reasonably precise option is usually a good 12v linear actuator from Progressive Automations. They have many models with 150–200 mm stroke and 100–200 N force that work well in DIY projects. Backlash is quite low compared to cheap no-name actuators from AliExpress. I used their PA-14 series on my last arm and was happy with repeatability. Check their collection here: 12v linear actuator https://www.progressiveautomations.com/en-au/collections/linear-actuators They have filters by stroke, force and speed so you can quickly find suitable units. Most of their actuators also come with limit switches built-in which is handy for simple control.