1. What is the Torque Formula?

The torque formula T = (P × 9550) / N calculates torque from power and rotational speed. It is commonly used in mechanical engineering to determine the twisting force produced by rotating machinery.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Rotational speed (rpm)

Explanation: The constant 9550 is derived from unit conversions between kW, rpm, and Nm to provide torque in Newton-meters.

3. Importance of Torque Calculation

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

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 9550 used in the formula?
A: The constant 9550 comes from the conversion between different units: 9550 = 60 × 1000 / (2π), which converts kW to watts, minutes to seconds, and accounts for the radian conversion.

Q2: What are typical torque values for different applications?
A: Torque values vary widely depending on application - small electric motors may produce 1-10 Nm, while industrial engines can produce thousands of Nm.

Q3: Can this formula be used for any rotating system?
A: Yes, this formula is universally applicable to any rotating mechanical system where power and rotational speed are known.

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 are the limitations of this calculation?
A: This calculation assumes constant torque and speed. For variable conditions or systems with significant losses, more complex calculations may be needed.