1. What is Hydraulic Pump Horsepower?

Hydraulic pump horsepower is the power required to drive a hydraulic pump that delivers a specified flow rate at a certain pressure. It accounts for the pump's efficiency in converting mechanical power to hydraulic power.

2. How Does the Calculator Work?

The calculator uses the hydraulic horsepower formula:

Where:

• \( Q \) — Flow rate in gallons per minute (GPM)
• \( P \) — Pressure in pounds per square inch (PSI)
• \( \eta \) — Pump efficiency (decimal between 0 and 1)
• 1714 — Conversion factor (PSI×GPM to HP)

Explanation: The formula calculates the mechanical power needed to produce the specified hydraulic power, accounting for pump inefficiencies.

3. Importance of Hydraulic HP Calculation

Details: Proper horsepower calculation ensures you select a motor powerful enough to drive the pump at required pressures and flows, while preventing oversized motors that waste energy.

4. Using the Calculator

Tips: Enter flow rate in GPM, pressure in PSI, and pump efficiency as a decimal (e.g., 85% = 0.85). Typical pump efficiencies range from 0.8-0.95.

5. Frequently Asked Questions (FAQ)

Q1: Why is 1714 used in the formula?
A: It's the conversion factor between PSI×GPM and horsepower (1 HP = 1714 PSI×GPM).

Q2: What's a typical pump efficiency value?
A: Gear pumps: 80-90%, vane pumps: 85-92%, piston pumps: 90-95%. Always consult manufacturer specs.

Q3: How does viscosity affect horsepower?
A: Higher viscosity fluids may require more power due to increased friction losses.

Q4: Should I add a safety factor?
A: Yes, typically 10-25% additional horsepower is recommended for system losses and contingencies.

Q5: Can this be used for hydraulic motors?
A: The same formula applies for hydraulic motors, but efficiency represents motor rather than pump efficiency.