I'm making a servo-controlled camera device controlled by arduino. I am using a HD1235MG Giant Servo. I'm using it at 7.4v so I should get 40 kg·cm of max torque.
I think I understand that this means it will lift a max of 40kg on a servo-arm of 1cm. But I am actually turing an object (camera) the centre of gravity of which is directly over the drive spindle. Is there any way to estimate the max size of an object it can rotate?
also I am helping support the weight using a flat needle bearing assemblage (see pic attached). I guess I may be over engineering this, my camera is only a couple of Kilos, but I want to understand the theory here too. Otherwise how can I learn? Maybe in future I can use it for heavier objects too.