Hydraulic Regeneration Circuit (Likely Feature):
Many modern excavators like the 320D incorporate a regeneration circuit in the control valve for the boom down function. When the boom is lowered, the weight of the attachments forces oil out of the rod end of the cylinder. The regeneration circuit efficiently redirects this oil to the piston end, reducing the amount of oil needed from the pump. This allows for faster descent speeds with less energy consumption and improved fuel efficiency.
This 341-2790 boom cylinder is used for 320D 323D 320D2 320GC excavator.
EXCAVATOR
320D FM 323F SA
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