# Frequent question: How do you calculate the power of a hydraulic motor?

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Hydraulic power is defined as flow multiplied by pressure. The hydraulic power supplied by a pump is: Power = (P x Q) ÷ 500 – where power is in kilowatts [kW], P is the pressure in bars, and Q is the flow in litres per minute.

## What is hydraulic power formula?

Fluid Power Formulas

 Variable Word Formula w/ Units Simplified Formula Fluid Pressure – P (PSI) = Force (Pounds) / Area ( Sq. In.) P = F / A Fluid Flow Rate – Q GPM= Flow (Gallons) / Unit Time (Minutes) Q = V / T Fluid Power in Horsepower – HP Horsepower = Pressure (PSIG) × Flow (GPM)/ 1714 HP = PQ / 1714 Actuator Formulas

## How do you size a hydraulic motor and pump?

If system pressure and flow are constant, motor sizing simply involves the standard equation: hp = (Q ×P) ÷ (1,714×EM ), where: hp is horsepower, Q is flow in gpm, P is pressure in psi, and EM is the pump’s mechanical efficiency.

## How do you calculate hydraulic flow?

Multiply the cross-sectional area by the flow velocity, provided in unit of length over unit time squared. If the cross-sectional area and flow are truly perpendicular, the flow rate angle is zero degrees. The value you just calculated is the hydraulic flow.

## What is hydraulic power unit?

Hydraulic power units (sometimes referred to as a hydraulic power pack) is a self-contained system that generally includes a motor, a fluid reservoir, and a pump. It works to apply the hydraulic pressure needed to drive motors, cylinders, and other complementary parts of a given hydraulic system.

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## What is the hydraulic system?

A hydraulic system is a drive technology where a fluid is used to move the energy from e.g. an electric motor to an actuator, such as a hydraulic cylinder. The fluid is theoretically uncompressible and the fluid path can be flexible in the same way as an electric cable.

## How much power does a hydraulic pump need?

Approximate power requirements can be estimated with the “Rule of 1500” which states: 1 HP is required for each 1 GPM at 1500 PSI or any multiple of 1500 such as 3 GPM at 500 PSI, 2 GPM at 750 PSI, 1/2 GPM at 3000 PSI, etc.

## How fast can a hydraulic motor spin?

This type of motor is the most commonly used in hydraulic systems. These motors are, like their pump counterparts, available in both variable and fixed displacement designs. Typical usable (within acceptable efficiency) rotational speeds range from below 50 rpm to above 14000 rpm.

## How efficient is a hydraulic motor?

A typical hydraulic pump is only 80-90% efficient. losses by utilizing a high viscosity index to maintain fluid viscosity in the optimum range across a wide operating temperature range. Increasing system pressure also reduces hydraulic pump efficiency. 