shop ZX850-3 ZX650-3 ZX870-3 Hydraulic Pump K3V280 Piston Main Pump 4635645 for Hitachi Excavator

Max Flow: ~560 L/min (main pumps) + 60 L/min (gear pump) at 2,000 RPM.

Rated Flow: 520–540 L/min (main pumps) under typical load conditions .

Rated Pressure: 34.3 MPa (350 bar / 5,076 psi) for continuous operation .

Max Pressure: 39.2 MPa (398 bar / 5,685 psi) for short-term peak loads global.kawasaki.com.

Max Operating Speed: 2,200 RPM (matched to engine output).

Recommended Speed Range: 1,800–2,000 RPM for prolonged durability .