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 essential for proper motor selection and application in various mechanical systems.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Newton-meters)
• \( P \) — Power (kilowatts)
• \( N \) — Rotational speed (revolutions per minute)
• 9550 — Conversion constant (derived from unit conversions)

Explanation: The formula converts power and speed into torque, which represents the motor's rotational force capability.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for motor selection, mechanical design, ensuring proper system performance, and preventing motor overload or underutilization.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 9550 used in the formula?
A: The constant 9550 comes from unit conversion factors (60 seconds/minute ÷ 2π radians/revolution × 1000 watts/kilowatt).

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

Q3: Can I use horsepower instead of kilowatts?
A: Yes, but you'll need to convert horsepower to kilowatts first (1 kW = 1.341 HP) or use a different constant in the formula.

Q4: How does torque relate to motor performance?
A: Torque determines a motor's ability to overcome load resistance. Higher torque means better starting capability and ability to handle heavy loads.

Q5: What affects motor torque output?
A: Motor design, power supply, efficiency, and operating conditions all affect the actual torque output of a motor.