The original design and optimum hydraulic syatem, enable both independent, combined and smooth operation of all functions. ALL hydraulic circuits have high quality hydraulic filters for protection against oil contamination and longer life of hydraulic components. Suction filter is built in suction line, a 10 pm full flow filter in return circuit and swing/travel motor drain lines.
Hitachi original shockless regulators and quick warm up systems are built in the pilot circuit for easy, fatigue-free operations.

. Main pumps - Two variable displacement axial piston pumps
. Flow rate - 2 x 115 Ipm
. Pilot pump - One gear pump
. Flow rate - 23 Ipm