This article is dedicated to walking you through the process of calculating the force of an actuator required to successfully lift the load of your application. There are a couple of factors involved to find the right force, including the load, the angle at which it is being pushed and the size of the load.
There are electrical and mechanical considerations that must be taken into account when implementing a linear actuator. It can sometimes be difficult to choose the right size and force. For example, the actuator may be rated to handle twice the weight of a trapdoor in terms of force, but still struggles to open it. This could happen because of the force application angle or insufficient leverage.