1. What is Motor Torque?

Motor torque is the rotational force produced by a 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 torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (W)
• \( RPM \) — Rotations per minute (rev/min)
• \( \pi \) — Mathematical constant pi (≈3.1416)
• 60 — Conversion factor from minutes to seconds

Explanation: This formula converts mechanical power and rotational speed into torque output, accounting for unit conversions between watts, RPM, and Newton-meters.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for motor selection, mechanical design, power transmission systems, and ensuring proper operation of rotating machinery.

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

Q2: Why is there a 60 in the numerator?
A: The 60 converts minutes to seconds since power is measured in watts (Joules/second) while RPM is per minute.

Q3: What are typical torque values for electric motors?
A: Torque values vary widely from fractional Nm for small motors to thousands of Nm for large industrial motors.

Q4: Does this formula work for all types of motors?
A: This formula calculates theoretical torque from power and speed, applicable to various motor types, though actual torque may vary due to efficiency factors.

Q5: How does gear reduction affect torque?
A: Gear reduction increases output torque while decreasing output speed, maintaining the same power (minus efficiency losses).