1. What is Hydraulic Motor Torque?

Hydraulic motor torque is the rotational force produced by a hydraulic motor, calculated based on the motor's displacement and the system pressure. It's a crucial parameter for determining the motor's ability to perform work.

2. How Does the Calculator Work?

The calculator uses the hydraulic motor torque formula:

Where:

• \( T \) — Torque in Newton-meters (Nm)
• \( D \) — Displacement in cubic centimeters per revolution (cm³/rev)
• \( P \) — Pressure in bar
• \( \pi \) — Mathematical constant Pi (~3.14159)

Explanation: The formula shows that torque is directly proportional to both displacement and pressure. The factor of 2π converts the units appropriately.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for selecting the right hydraulic motor for an application, ensuring it can provide sufficient rotational force to drive the load under operating conditions.

4. Using the Calculator

Tips: Enter the motor's displacement in cm³/rev and system pressure in bar. Both values must be positive numbers for valid results.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between theoretical and actual torque?
A: Theoretical torque is calculated from the formula, while actual torque accounts for mechanical losses (typically 85-95% of theoretical).

Q2: How does speed affect torque in hydraulic motors?
A: For a given pressure and displacement, torque remains constant regardless of speed in an ideal hydraulic motor.

Q3: What are typical torque values for hydraulic motors?
A: Torque varies widely based on motor size - from <1 Nm for small motors to >10,000 Nm for large radial piston motors.

Q4: Can I use this for hydraulic pumps?
A: Yes, the same formula applies for calculating the torque required to drive a hydraulic pump.

Q5: What if my pressure is in psi instead of bar?
A: Convert psi to bar (1 bar ≈ 14.5 psi) before using the calculator, or use the formula T = (D × P) / 24π for psi input.