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How To Calculate Motor Torque

Motor Torque Formula:

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

W
rev/min

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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 mechanical engineering, robotics, and industrial applications.

2. How Does The Calculator Work?

The calculator uses the torque formula:

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

Where:

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

3. Importance Of Torque Calculation

Details: Accurate torque calculation is essential for motor selection, mechanical design, ensuring proper system performance, and preventing motor overload or failure in various applications.

4. Using The Calculator

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

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 π used in the torque formula?
A: π is used to convert between linear and rotational motion, as it relates the circumference of a circle to its diameter.

Q3: What are typical torque values for different motors?
A: Torque values vary widely - small DC motors may produce 0.01-0.1 Nm, while industrial motors can produce hundreds of Nm.

Q4: How does RPM affect torque?
A: For constant power, torque decreases as RPM increases, following an inverse relationship as shown in the formula.

Q5: Can this formula be used for all types of motors?
A: This formula applies to rotational systems in general, but specific motor types may have additional considerations for peak vs continuous torque.

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