This standard specifies the method for measuring the no-load displacement of positive displacement hydraulic pumps and hydraulic motors using hydraulic oil as the working medium under steady-state conditions.
GB/T 7936-1987 history
2012GB/T 7936-2012 Hydraulic fluid power.positive displacement pumps and motors.Determination of derived capacity
1987GB/T 7936-1987 Hydraulic fluid power--Positive displacement pumps and motors--Determination of derived capacity