Torque Calculator For Motor

Torque Formula:

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

Torque (τ):

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1. What is Motor Torque Calculation?

Motor torque calculation determines the rotational force produced by an electric motor based on its power output and rotational speed. This is essential for understanding motor performance and selecting appropriate motors for specific applications.

2. How Does the Calculator Work?

The calculator uses the torque formula:

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

Where:

\( \tau \) — Torque (N·m)
\( P \) — Power (W)
\( n \) — Speed (rpm)
\( \pi \) — Mathematical constant pi (approximately 3.1416)

Explanation: The formula converts power and rotational speed into torque, accounting for unit conversions between watts, revolutions per minute, and newton-meters.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for motor selection, mechanical system design, and ensuring proper performance in applications ranging from industrial machinery to automotive systems.

4. Using the Calculator

Tips: Enter power in watts and speed 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, power, and speed?
A: Torque is inversely proportional to speed when power is constant. Higher speed means lower torque, and vice versa, for the same power output.

Q2: What are typical torque values for electric motors?
A: Torque values vary significantly based on motor size and type, ranging from fractional N·m for small motors to thousands of N·m for large industrial motors.

Q3: Why is the 60 in the numerator?
A: The factor of 60 converts revolutions per minute to revolutions per second, since power is measured in watts (joules per second).

Q4: Can this formula be used for all types of motors?
A: This formula applies to any rotating system where power and speed are known, including AC/DC motors, engines, and other rotational power sources.

Q5: How does torque affect motor performance?
A: Torque determines the motor's ability to overcome load resistance. Higher torque enables motors to start under heavy loads and maintain operation against resistance.