1. What is Hydraulic Motor Torque?

Hydraulic motor torque is the rotational force produced by a hydraulic motor, calculated based on displacement, pressure, and efficiency. It represents the motor's ability to perform mechanical work.

2. How Does the Calculator Work?

The calculator uses the hydraulic motor torque formula:

Where:

• \( T_{motor} \) — Torque in Newton-meters (N·m)
• \( Disp \) — Displacement in cubic centimeters per revolution (cm³/rev)
• \( P \) — Pressure in bars
• \( \eta \) — Efficiency (unitless, typically between 0-1)

Explanation: The formula calculates the torque output of a hydraulic motor based on its displacement characteristics, operating pressure, and mechanical efficiency.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for proper hydraulic system design, motor selection, performance prediction, and ensuring adequate power for mechanical applications.

4. Using the Calculator

Tips: Enter displacement in cm³/rev, pressure in bars, and efficiency as a decimal value (e.g., 0.85 for 85% efficiency). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is displacement in hydraulic motors?
A: Displacement refers to the volume of fluid required to rotate the motor output shaft through one complete revolution.

Q2: How does pressure affect torque output?
A: Higher system pressure directly increases torque output, as torque is proportional to pressure in the torque equation.

Q3: What is typical efficiency for hydraulic motors?
A: Efficiency typically ranges from 0.75 to 0.95 (75-95%), depending on motor type, design, and operating conditions.

Q4: Can this formula be used for all hydraulic motor types?
A: This formula applies to most positive displacement hydraulic motors, including gear, vane, and piston motors.

Q5: How does temperature affect torque calculation?
A: Temperature affects fluid viscosity and therefore system efficiency. Higher temperatures may reduce efficiency and consequently torque output.