1. What is Hydraulic Pump Torque?

Definition: Hydraulic pump torque is the rotational force required to drive a hydraulic pump at a given pressure and displacement.

Purpose: This calculation helps in selecting appropriate motors and determining power requirements for hydraulic systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (lb-ft)
• \( P \) — Pressure (psi)
• \( D_p \) — Pump displacement per revolution (in³/rev)
• \( 2\pi \) — Constant for unit conversion

Explanation: The formula calculates the torque needed to overcome the pressure working against the pump's displacement.

3. Importance of Torque Calculation

Details: Proper torque calculation ensures the hydraulic system has sufficient power and prevents motor overload.

4. Using the Calculator

Tips: Enter the system pressure in psi and pump displacement in cubic inches per revolution. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What units does this formula use?
A: The formula uses psi for pressure and in³/rev for displacement to yield lb-ft torque.

Q2: How does displacement affect torque?
A: Larger displacement pumps require more torque at the same pressure.

Q3: Is this the same for hydraulic motors?
A: The same formula applies to hydraulic motors, calculating output torque.

Q4: What about efficiency losses?
A: This is theoretical torque; actual torque may be higher due to mechanical inefficiencies.

Q5: Can I use this for metric units?
A: No, this formula is for imperial units. Different constants are needed for metric calculations.