1. What is DC Motor Torque?

DC motor torque is the rotational force produced by a DC motor, measured in Newton-meters (Nm). It represents the motor's ability to perform work and overcome resistance to rotation.

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
• \( RPM \) — Rotational speed in revolutions per minute
• \( 2\pi \) — Conversion factor for radians
• \( 60 \) — Conversion factor for seconds to minutes

Explanation: The formula converts electrical power to mechanical torque, accounting for the rotational speed of the motor.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for motor selection, system design, and ensuring the motor can handle the required mechanical load without stalling or overheating.

4. Using the Calculator

Tips: Enter power in watts and RPM in revolutions per minute. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between torque and RPM?
A: For a given power, torque decreases as RPM increases. This inverse relationship is fundamental to motor performance characteristics.

Q2: What are typical torque values for DC motors?
A: Torque values vary widely depending on motor size and application, ranging from 0.01 Nm for small hobby motors to over 100 Nm for industrial motors.

Q3: How does voltage affect torque?
A: In DC motors, torque is proportional to current, which is affected by voltage. Higher voltage typically allows for higher current and thus higher torque.

Q4: What is stall torque?
A: Stall torque is the maximum torque a motor can produce when rotation is prevented (RPM = 0). It represents the motor's peak torque capability.

Q5: Can this formula be used for AC motors?
A: This specific formula is primarily for DC motors. AC motors have different torque characteristics and may require additional factors like power factor.