1. What is the Torque Formula?

The torque formula calculates rotational force from power and rotational speed. It's essential in mechanical engineering for designing and analyzing rotating machinery, engines, and motors.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Newton-meters)
• \( P \) — Power (kilowatts)
• \( N \) — Rotational speed (RPM)
• 9550 — Conversion constant (derived from unit conversions)

Explanation: The formula shows that torque is directly proportional to power and inversely proportional to rotational speed.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for designing mechanical systems, selecting appropriate motors, ensuring proper gear ratios, and preventing mechanical failures in rotating equipment.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and rotational speed in RPM (revolutions per minute). 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 unit conversions: 60,000/(2π) ≈ 9550, which converts between kW, RPM, and Nm.

Q2: Can I use horsepower instead of kilowatts?
A: Yes, but you'll need to convert horsepower to kilowatts first (1 kW ≈ 1.341 HP) or use a different constant in the formula.

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 gear reduction affect torque?
A: Gear reduction increases output torque while decreasing output speed, with torque multiplied by the gear ratio.

Q5: Why is torque important in vehicle performance?
A: Torque determines a vehicle's acceleration and pulling power, with higher torque values providing better low-end performance and towing capacity.