1. What is the Torque Calculation Formula?

The torque calculation formula \( T = \frac{P \times 9550}{N} \) calculates torque from power and rotational speed. This formula 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 conversion factors to ensure proper calculation between kilowatts, Newton-meters, and revolutions per minute.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for designing mechanical systems, selecting appropriate motors and gearboxes, and ensuring proper operation 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: 1 kW = 1000 Nm/s and 1 rpm = 1/60 revolutions per second.

Q2: What are typical torque values for different applications?
A: Torque values vary widely depending on the application, from small fractional Nm values for precision instruments to thousands of Nm for industrial machinery.

Q3: Can this formula be used for all types of rotating machinery?
A: Yes, this formula applies to any rotating system where power and rotational speed are known, including electric motors, engines, and turbines.

Q4: What if I have power in horsepower instead of kilowatts?
A: Convert horsepower to kilowatts first (1 hp = 0.7457 kW) before using the calculator.

Q5: How does torque relate to mechanical work?
A: Torque represents the rotational force applied, while power represents the rate at which work is done. Higher torque at the same RPM means more power.