Linear actuator movement without electrical power

Help & Support Robot Parts
1

Hello,

I want to know what’s happen when a electrical linear actuator lift-up a load (50Kg) and the electrical power is removed ?
The actuator keep the position or by the gravity, the load move down the actuator ?
It’s important because technical specifications discribe that the running time had to stay under 50%.
So if I want to keep the load up and the actuator need to be energized to keep the position, it will be short in time!!

Thanks for your help,

Regards,

François

3

@Baroudeur Welcome to the RobotShop Community.

Normally DC linear actuators operate based on a lead screw principle, which is difficult, though not impossible to backdrive. To be able to backdrive the actuator requires a certain force. You can see the datasheet for any linear actuator you’re consider to see if they mention “backdrive” or “back drive” force.