1. What is the Torque Calculation Formula?

The torque calculation formula \( T = \frac{P \times 9550}{N} \) calculates torque from power and rotational speed, where T is torque in Newton-meters (Nm), P is power in kilowatts (kW), and N is rotational speed in revolutions per minute (rpm).

2. How Does the Calculator Work?

The calculator uses the torque calculation formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Rotational Speed (rpm)
• 9550 — Conversion constant

Explanation: The formula converts power and rotational speed into torque, which represents the rotational force produced by a machine or engine.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for mechanical engineering applications, motor selection, gearbox design, and understanding the performance characteristics of rotating machinery.

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: What is the significance of the constant 9550?
A: The constant 9550 is derived from unit conversion factors that relate power (kW), rotational speed (rpm), and torque (Nm) in the metric system.

Q2: Can this formula be used for different units?
A: This specific formula is designed for power in kW and speed in rpm. Different conversion factors are needed for other unit systems (e.g., horsepower and RPM).

Q3: What are typical torque values for electric motors?
A: Torque values vary significantly based on motor size and type. Small motors may produce a few Nm, while large industrial motors can produce thousands of Nm.

Q4: How does torque relate to mechanical power?
A: Torque and rotational speed together determine mechanical power output. Higher torque at the same speed results in higher power output.

Q5: Are there limitations to this calculation?
A: This calculation provides theoretical torque values and assumes constant efficiency. Actual torque may vary due to mechanical losses, efficiency factors, and operating conditions.