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 represents the motor's ability to perform mechanical work.

2. How Does the Calculator Work?

The calculator uses the hydraulic motor torque equation:

Where:

• \( T \) — Torque (Nm)
• \( displacement \) — Motor displacement per revolution (m³/rev)
• \( pressure \) — System pressure (Pa)
• \( \pi \) — Mathematical constant pi (approximately 3.14159)

Explanation: This equation calculates the theoretical torque output of a hydraulic motor based on its geometric displacement and the pressure difference across the motor.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for proper hydraulic system design, motor selection, and ensuring the motor can provide sufficient force for the intended application without overloading.

4. Using the Calculator

Tips: Enter displacement in m³/rev and pressure in Pascals (Pa). Both values must be positive numbers. The calculator will compute the torque in Newton-meters (Nm).

5. Frequently Asked Questions (FAQ)

Q1: What is motor displacement?
A: Displacement is the volume of fluid required to rotate the motor output shaft through one complete revolution, typically measured in m³/rev or cm³/rev.

Q2: How does pressure affect torque?
A: Torque is directly proportional to pressure - higher system pressure results in higher torque output from the hydraulic motor.

Q3: What are typical torque values for hydraulic motors?
A: Torque values vary widely based on motor size and design, ranging from a few Nm for small motors to thousands of Nm for large industrial motors.

Q4: Are there efficiency factors to consider?
A: Yes, this formula gives theoretical torque. Actual torque may be lower due to mechanical and volumetric efficiencies. Typical efficiencies range from 80-95%.

Q5: Can this formula be used for all hydraulic motors?
A: This formula applies to most positive displacement hydraulic motors (gear, vane, piston motors) but may need adjustment for specific motor types and designs.