shop 705-57-21000 Hydraulic Gear Oil Pump for Wheel Loader WA250-3MC_Excavator Hydraulics, Diesel Engine, SKS Hydraulic

Part Number 705-57-21000

Pump Type Gear pump

Displacement ~26 cm³/rev (典型值，typical)

Rated Pressure 16 MPa (2,320 psi)

Maximum Pressure 20 MPa (2,900 psi)

Rated Speed 1,800–2,000 rpm

Maximum Speed 2,400 rpm

Rotation Direction Clockwise (CW, from drive end)

Volumetric Efficiency ≥88%

Mechanical Efficiency ≥85%

Total Efficiency ≥75%

Fluid Type Hydraulic oil (Komatsu L-HM 46, ISO VG 46)

Fluid Temperature Range -10°C to +90°C (14°F to 194°F)

Viscosity Range 15–400 cSt (at 40°C)

Inlet/Outlet Port Size SAE 10 (1.25" NPT)

Mounting Type SAE 4-bolt flange (direct mount to transmission or engine)

Weight ~18 kg (39.7 lbs)