Is there not like a bunch of electronic components that would get twisted and ruined of they just kept spinning? Or is there a limit to how many rotations they can do before needing to counterspin?
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On excavators there are no electrical circuits that need to go from the cab to the undercarriage, only the hydraulic circuits that drive the tracks and blade (if it has one).
There is hydraulic equivalent to a “slip ring” but the actual name of it eludes me at the moment. It works the same way, but instead of electrical pathways there are fluid passages and seals to keep them separate. On my excavator there are five separate circuits that go through this connection.
There is no limit to the number of turns it can make.
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