Hydraulic Calculators
Fast trade calculators for hydraulic power, pump flow, gear pump displacement, cylinder force, cylinder speed, hose velocity and hose sizing.
Power
Power Required—
Calculated at 100% efficiency. Formula: kW = pressure(bar) × flow(L/min) ÷ 600.
Pump Flow
Pump Flow—
Calculated at 100% volumetric efficiency. Formula: L/min = cc/rev × RPM ÷ 1000.
Gear Pump Displacement
Approx. Displacement—
Measure the gear pump dimensions as shown above. This calculator uses the same calculation method as Hydraulics Network and provides an estimated gear pump displacement in cc/rev.
Cylinder Force
Extend / Retract Force—
Retract force allows for rod area.
Cylinder Speed
Extend Speed / Time—
Approximate extend speed based on full bore area.
Hose Velocity
Oil Velocity—
General guide: suction 0.5–1.0 m/s, return 1.0–2.0 m/s, pressure 2.0–4.5 m/s.
Hose Size
Minimum Hose ID—
Pick the next available hose size above the calculated inside diameter.