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 (revolutions per minute)
• 9550 — Conversion constant (derived from unit conversions)

Explanation: The constant 9550 comes from converting units: 60,000/(2π) ≈ 9550, where 60,000 converts minutes to seconds and kW to watts.

3. Importance of Torque Calculation

Details: Torque calculation is crucial for mechanical design, motor selection, gearbox design, and performance analysis of rotating equipment in various industries.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and rotational speed in RPM. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 9550 used?
A: The constant 9550 converts units from kW and RPM to Nm: 60,000/(2π) ≈ 9550, accounting for time and power unit conversions.

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 for horsepower calculations.

Q3: What are typical torque values for different applications?
A: Torque values vary widely - from small motors (1-10 Nm) to industrial machinery (thousands of Nm) depending on power and speed requirements.

Q4: How does torque relate to mechanical power?
A: Power is the rate of doing work, while torque is the rotational force. Power = Torque × Angular Velocity.

Q5: Are there limitations to this formula?
A: This formula assumes constant speed and torque. For variable conditions or efficiency losses, more complex calculations may be needed.