Electric Motor Torque Calculator

Motor Torque Equation:

\[ T = \frac{P \times 60}{2 \pi n} \]

Torque (T):

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1. What is Motor Torque?

Motor torque is the rotational force produced by an electric motor. It represents the motor's ability to perform work and is a crucial parameter in motor selection and application design.

2. How Does the Calculator Work?

The calculator uses the motor torque equation:

\[ T = \frac{P \times 60}{2 \pi n} \]

Where:

\( T \) — Torque (Newton-meters)
\( P \) — Power (Watts)
\( n \) — Rotational speed (RPM)
\( \pi \) — Mathematical constant pi (approximately 3.14159)

Explanation: The formula converts power and rotational speed into torque, accounting for the relationship between rotational motion and force.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for proper motor sizing, ensuring the motor can handle the required load, preventing overheating, and optimizing energy efficiency in various applications.

4. Using the Calculator

Tips: Enter power in watts and rotational speed in RPM. Both values must be positive numbers. The calculator will compute the torque in Newton-meters.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between torque and power?
A: Torque is the rotational force, while power is the rate at which work is done. Power = Torque × Angular Velocity.

Q2: Why is the 60 in the formula?
A: The factor 60 converts RPM (revolutions per minute) to revolutions per second, since power is measured in watts (joules per second).

Q3: What are typical torque values for electric motors?
A: Torque values vary widely depending on motor size and type, ranging from small fractional Nm for miniature motors to thousands of Nm for large industrial motors.

Q4: Can this formula be used for all motor types?
A: This formula applies to all rotating machinery when power and speed are known, but actual motor performance may vary due to efficiency factors and load conditions.

Q5: How does torque relate to motor selection?
A: Torque requirements determine motor size and type. The motor must provide sufficient torque to start, accelerate, and maintain the load under all operating conditions.