1. What is the Torque Formula?

The torque formula T = (P × 9550) / N calculates torque from power and rotational speed. This equation is commonly used in mechanical engineering to determine the rotational force produced by motors and engines.

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 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 ensuring proper performance 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.

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 9550 used in the formula?
A: The constant 9550 comes from unit conversion: 1 kW = 1000 N·m/s and 1 rpm = 1/60 revolutions per second.

Q2: Can I use different units with this formula?
A: This specific formula requires power in kW and speed in rpm. For other units, different conversion factors would be needed.

Q3: What is a typical torque range for electric motors?
A: Torque varies greatly by motor size and type, ranging from less than 1 Nm for small motors to thousands of Nm for large industrial motors.

Q4: How does torque relate to power in mechanical systems?
A: Power is the product of torque and angular velocity. Higher torque at the same RPM results in higher power output.

Q5: When is torque calculation most important?
A: Torque calculation is critical when designing drive systems, selecting gearboxes, and ensuring mechanical components can handle the rotational forces.