I have an understanding i think of what mechanical efficiency is, but it is not concrete.
FOr example I read on McMaster Carr how an Acme screw has a mechanical efficnecy of roughly 30%, versus a ballscrew with up to 90%.
Does this mean that with an ACME screw, 70 percent of the loads produced by the source (be it a motor, a human turning a handle, a water wheel or anything else) are used in moving the screw and nut? ANd 30% reaches the final outcome?
And with a ballscrew 90% of the energy reaches the final outcome? Thanks