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 widely used in mechanical engineering to determine the twisting force applied by rotating machinery.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Newton-meters, Nm)
• \( P \) — Power (kilowatts, kW)
• \( N \) — Rotational speed (revolutions per minute, rpm)
• 9550 — Conversion constant (derived from unit conversions)

Explanation: The constant 9550 comes from converting between different units of measurement (kW to W, minutes to seconds, and radians conversion).

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for designing mechanical systems, selecting appropriate motors and gearboxes, and ensuring equipment operates within safe limits.

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 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 hp = 0.7457 kW) or use a different constant in the formula.

Q3: What are typical torque values for different applications?
A: Torque values vary widely depending on application. Small electric motors might produce 1-10 Nm, while industrial engines can produce thousands of Nm.

Q4: Does this formula work for all types of rotating machinery?
A: This formula provides theoretical torque values and works for most rotating equipment, but actual torque may vary due to efficiency losses and other factors.

Q5: How is torque related to power in mechanical systems?
A: Torque and rotational speed together determine power output. Higher torque at the same RPM results in more power, or the same power can be achieved with higher torque at lower RPM.