1. What is the Torque Formula?

The torque formula calculates rotational force from power and rotational speed. It is commonly used in mechanical engineering to determine the torque output of engines, motors, and other rotating machinery.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( RPM \) — Rotational speed (rev/min)
• 9549 — Conversion constant

Explanation: The formula converts power in kilowatts and rotational speed in revolutions per minute to torque in Newton-meters.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for designing mechanical systems, selecting appropriate motors and engines, and ensuring proper performance and efficiency of rotating machinery.

4. Using the Calculator

Tips: Enter power in kilowatts and rotational speed in revolutions per minute. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 9549 used in the formula?
A: The constant 9549 comes from the conversion factors between different units of power and rotational speed to derive torque in Newton-meters.

Q2: What are typical torque values for electric motors?
A: Torque values vary widely depending on motor size and type, ranging from fractions of a Nm for small motors to thousands of Nm for large industrial motors.

Q3: Can this formula be used for any rotating machinery?
A: Yes, this formula is universally applicable to any rotating system where power and rotational speed are known, including engines, motors, turbines, and pumps.

Q4: How does torque relate to mechanical power?
A: Torque and rotational speed together determine mechanical power output. Power is the product of torque and angular velocity.

Q5: What units should I use for accurate results?
A: For this calculator, use kilowatts for power and revolutions per minute for rotational speed to get torque results in Newton-meters.