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. It's a critical parameter in mechanical engineering and motor selection.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Rotational speed (rpm)

Explanation: The constant 9550 is derived from unit conversion factors to relate power in kilowatts, speed in RPM, and torque in Newton-meters.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for proper motor selection, ensuring the motor can handle the required mechanical load, and for designing mechanical systems that rely on specific torque values.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and rotational speed in revolutions per minute (rpm). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 9550 used in the formula?
A: The constant 9550 comes from unit conversion: 60,000/(2π) ≈ 9550, which converts power in kW, speed in RPM, to torque in Nm.

Q2: What is a typical torque range for electric motors?
A: Torque varies greatly by motor type and size, ranging from less than 1 Nm for small motors to thousands of Nm for large industrial motors.

Q3: How does torque relate to motor performance?
A: Torque determines a motor's ability to overcome resistance and perform work. Higher torque means better ability to start under load and handle heavy applications.

Q4: Can this formula be used for all types of motors?
A: This formula provides theoretical torque for ideal conditions. Actual torque may vary based on motor efficiency, type (AC/DC), and operating conditions.

Q5: How is torque different from power?
A: Torque is a measure of rotational force, while power is the rate at which work is done. Power = Torque × Angular Velocity.