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Motor
Efficiency
Calculator
Calculate volumetric, mechanical, and overall efficiency of a hydraulic motor from test data.
Input Parameters
Theoretical Flow (GPM)
Actual Flow (GPM)
Theoretical Torque (lb·ft)
Actual Torque (lb·ft)
Calculate
Results
--
Volumetric Efficiency
%
--
Mechanical Efficiency
%
--
Overall Efficiency
%
--
Power Loss
HP
Note:
For motors: volumetric eff uses Q_theo/Q_actual (inverse of pumps). New motor overall efficiency: 85-92%.
Reference
Volumetric Eff = (Theoretical Flow / Actual Flow) × 100 Mechanical Eff = (Actual Torque / Theoretical Torque) × 100 Overall Eff = η_vol × η_mech Power Loss = Input HP × (1 - η_overall)