oem D65 D75 D80 D85 D95 Bulldozer Hydraulic Gear Pump 07433-71103 Hydraulic Pumps Excavator Parts 0743371103_Excavator Hydraulics, Diesel Engine, SKS Hydraulic

Typical: ~18 mL/rev (may vary by specific bulldozer model)

Note: Displacement defines the volume of oil pumped per revolution.

Pressure Rating

Rated Pressure: 16–20 MPa (2321–2900 psi)

Maximum Pressure: 25 MPa (3626 psi, short-term operation)

Function: Determines the pump’s ability to generate hydraulic force.

Speed Range

Rated Speed: 1500–2000 rpm (normal operating speed)

Maximum Speed: 2300 rpm (transient limit)

Impact: Higher speed increases flow rate but may affect efficiency.

Flow Rate

At 1800 rpm: ~32 L/min (calculated as displacement × speed; actual may vary with pressure and oil viscosity).

Efficiency

Volumetric Efficiency: ≥90% (efficiency in oil volume transfer)

Mechanical Efficiency: ≥85% (energy conversion efficiency)