1. What is Motor Torque?

Motor torque is the rotational force produced by a motor's shaft. It's a crucial parameter in mechanical systems that determines the motor's ability to perform work and overcome resistance.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

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

Explanation: The formula shows that torque is inversely proportional to speed when power is constant. Higher speed means lower torque, and vice versa.

3. Importance of Torque Calculation

Details: Knowing a motor's torque is essential for selecting the right motor for an application, ensuring proper system performance, and preventing mechanical failures.

4. Using the Calculator

Tips: Enter power in kW and speed in RPM. Both values must be positive numbers. The calculator will compute the torque in Nm.

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: 9550 is a conversion factor derived from unit conversions (60 seconds/minute × 1000 watts/kilowatt) divided by 2π radians/revolution.

Q2: What's the difference between torque and power?
A: Power is the rate of doing work, while torque is the rotational force. Power = Torque × Angular Velocity.

Q3: How does torque relate to motor size?
A: Generally, higher torque requires a larger motor, but gearing can modify the torque-speed relationship.

Q4: What affects motor torque output?
A: Voltage, current, motor design, temperature, and load conditions all affect torque output.

Q5: Can I use this for electric and combustion engines?
A: Yes, the formula applies to any rotating machine when you know the power and speed.