eli5 why hydraulics can be used to crush near everything, but the functional components don’t crush themselves?
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A hydraulic piston generates force from pressure.
The fluid pushes on a solid steel bar. That solid steel bar then moves and (in the case of crushing something) transfers the force to the unsuspecting material victim.
If the unsuspecting material victim was, in fact, a solid steel bar the size of the hydraulic tool, then one of two things would happen.
In a good, functional press nothing happens. The tool hits the work piece and halts. It reaches its maximum force and stops.
If somehow your pump could go to a way higher pressure, then something would break. Probably the cylinder itself bursting. That’s the big tube that the solid metal bar comes out of, where the fluid is.
If somehow the cylinder and pressure system *and motor* were all super overbuilt, then the tool itself could be crushed.
Or if you have a particularly weak tool, such as the bladed tools on *hydraulic press channel*, then the tool can break much more easily. They have videos where the tool itself is crushed.
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