1. What is DC Motor Torque?

Torque in a DC motor is the rotational force produced by the motor shaft. 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 DC motor torque formula:

Where:

• \( T \) — Torque in Newton-meters (Nm)
• \( P \) — Power in watts
• \( N \) — Rotational speed in RPM
• \( \pi \) — Mathematical constant Pi (~3.1416)

Explanation: The formula converts power (watts) to torque (Nm) accounting for the motor's rotational speed. The factor of 60 converts RPM to revolutions per second.

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 mechanical load without stalling or overheating.

4. Using the Calculator

Tips: Enter the motor's power rating in watts and its operating speed in RPM. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between stall torque and operating torque?
A: Stall torque is the maximum torque at zero speed, while operating torque is the torque produced at normal operating conditions.

Q2: How does voltage affect torque in DC motors?
A: In general, increasing voltage increases speed, while torque is more directly related to current (torque = Kt × current).

Q3: What are typical torque values for small DC motors?
A: Small hobby motors might produce 0.01-0.1 Nm, while industrial motors can produce hundreds of Nm.

Q4: How does gear reduction affect torque?
A: Gear reduction increases output torque while decreasing speed, with the trade-off being proportional to the gear ratio.

Q5: Can I use this for AC motors?
A: This formula works for any motor type when you know the power and speed, but AC motors have additional torque characteristics (starting, breakdown, full-load torque).