THE 5-SECOND TRICK FOR MACHINERY GUIDE FOR SALE

Hydraulic excavators commonly couple motor electrical power to (usually) three hydraulic pumps rather then to mechanical drivetrains. The two major pumps provide oil at significant stress (approximately 5000 psi, 345 bar) for the arms, swing motor, track motors and accessories although the third is often a lower stress (≈seven hundred psi, 48 bar