1. What is Hydraulic Motor Horsepower?

Hydraulic motor horsepower is a measure of the power output of a hydraulic motor, calculated based on the flow rate of hydraulic fluid, system pressure, and motor efficiency. It determines the motor's ability to perform work.

2. How Does the Calculator Work?

The calculator uses the hydraulic horsepower formula:

Where:

• \( Flow\ Rate \) — Gallons per minute (GPM) of hydraulic fluid
• \( Pressure \) — System pressure in pounds per square inch (PSI)
• \( Efficiency \) — Motor efficiency as a decimal (0-1)
• 1714 — Conversion constant

Explanation: The formula converts hydraulic power (flow and pressure) to mechanical power (horsepower), accounting for motor efficiency losses.

3. Importance of Horsepower Calculation

Details: Accurate horsepower calculation is crucial for selecting the right motor size, ensuring system efficiency, and preventing motor overload or underutilization.

4. Using the Calculator

Tips: Enter flow rate in GPM, pressure in PSI, and efficiency as a decimal between 0 and 1 (e.g., 0.9 for 90% efficiency). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the 1714 constant in the formula?
A: It's the conversion factor that converts (GPM × PSI) to horsepower (1 HP = 1714 GPM×PSI).

Q2: What is typical hydraulic motor efficiency?
A: Most hydraulic motors have efficiencies between 80-95% (0.8-0.95), with gear motors at the lower end and piston motors at the higher end.

Q3: How does pressure affect horsepower?
A: Horsepower increases linearly with pressure. Doubling pressure (with constant flow) doubles the horsepower output.

Q4: Can I use this for hydraulic pumps?
A: Yes, the same formula calculates input horsepower required for hydraulic pumps.

Q5: What if my efficiency is unknown?
A: Use 0.85 as a reasonable estimate for most applications, or consult your motor's specifications.