Hydraulic Pump Torque calculation

Post by **amh** » Sat Feb 07, 2026 10:09 am

Theoritical Hydraulic Pump Torque

$T_{theo} = \frac{\Delta p \cdot V_g}{2\pi} \quad \text{[Nm]}$

Vg = Displacement per revolution (m3/rev)
dp = pressure drop in bar

Actual Theoritical Hydraulic Pump Torque

$T_{act} = \frac{\Delta p \cdot V_g}{2\pi \cdot \eta_{mech}} \quad \text{[Nm]}$

n_mech = mechanical effciency

Mechanical Effciency

$\eta_{mech} = \frac{T_{\mathrm{th}}}{T_{\mathrm{meas}}}$

T_th = Theoritical Torque
T_mea = Measured torque