Kikki's Workshop Q&A: Let's ask Kikki ! Kikki's Workshop
How many turns can a power shovel make before it comes off ?
Surely a power shovel spins a lot, and it may make you wonder if it will eventually come off after being used for a while. Don't worry! Hydraulic excavators have a part called "swing circle" and it does not come off unlike a screw or a bottle cap.

For more information, please look at "Everything About Construction Equipment" in Kikki's Workshop.