1. What is Electric Motor Torque?

Torque is the rotational force produced by an electric motor. It's a crucial parameter that determines the motor's ability to perform work and overcome load resistance.

2. How Does the Calculator Work?

The calculator uses the torque equation:

Where:

• \( \tau \) — Torque (Newton-meters, Nm)
• \( P \) — Power (watts)
• \( n \) — Rotational speed (revolutions per minute, rpm)

Explanation: The equation converts power and rotational speed into torque, accounting for unit conversions between seconds and minutes.

3. Importance of Torque Calculation

Details: Knowing a motor's torque is essential for selecting the right motor for an application, ensuring it can handle the required load without stalling or overheating.

4. Using the Calculator

Tips: Enter power in watts and rotational speed in rpm. Both values must be positive numbers. The calculator will output torque in Newton-meters (Nm).

5. Frequently Asked Questions (FAQ)

Q1: 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.

Q2: How does torque relate to motor size?
A: Generally, larger motors produce more torque, but motor design and gearing also significantly affect torque output.

Q3: What is typical torque for small electric motors?
A: Small hobby motors might produce 0.01-0.1 Nm, while industrial motors can produce hundreds or thousands of Nm.

Q4: How does voltage affect torque?
A: For DC motors, torque is directly proportional to current, which is affected by voltage. Higher voltage can mean higher torque up to the motor's limits.

Q5: What if my motor's torque is too low for my application?
A: You may need a more powerful motor, or you could use gear reduction to increase torque (while decreasing speed).