1. What is Hydraulic Horsepower to Motor Horsepower?

Definition: This calculator converts hydraulic power requirements to the motor horsepower needed to drive the hydraulic pump.

Purpose: It helps engineers and technicians properly size electric motors for hydraulic systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( HP \) — Motor horsepower required
• \( Q \) — Flow rate (gallons per minute, GPM)
• \( P \) — Pressure (pounds per square inch, psi)
• \( \eta \) — Efficiency factor (typically 0.85 for most pumps)

Explanation: The formula calculates the theoretical hydraulic horsepower and then accounts for pump efficiency to determine actual motor requirements.

3. Importance of Proper Horsepower Calculation

Details: Correct motor sizing ensures efficient system operation, prevents motor overload, and reduces energy costs.

4. Using the Calculator

Tips: Enter the flow rate in GPM, system pressure in psi, and pump efficiency factor (default 0.85). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 1714 used in the formula?
A: 1714 is a conversion factor that relates GPM, psi, and horsepower in the imperial unit system.

Q2: What's a typical efficiency factor?
A: Most hydraulic pumps have efficiencies between 0.8-0.9 (80-90%).

Q3: Should I round up the motor size?
A: Yes, always select the next standard motor size above your calculated value.

Q4: Does this account for system losses?
A: Only pump efficiency is included. Additional system losses should be considered separately.

Q5: Can I use this for other fluids?
A: This formula works for most hydraulic fluids with similar viscosity to oil.