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 and motor selection.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Speed (rpm)
• 9550 — Conversion constant

Explanation: The formula calculates the torque output of a motor based on its power rating and rotational speed, using the appropriate conversion factor for units.

3. Importance of Torque Calculation

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

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: 9550 is the conversion constant that accounts for unit conversion from kW and rpm to Nm, derived from the relationship between power, torque, and angular velocity.

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: How does torque relate to motor performance?
A: Torque determines a motor's ability to start under load, accelerate, and maintain operation against resisting forces. Higher torque means better load-handling capability.

Q4: Can this formula be used for all motor types?
A: This formula provides theoretical torque calculation for various motor types, but actual torque may vary due to efficiency factors, motor design, and operating conditions.

Q5: How important is torque in motor selection?
A: Torque is critical in motor selection as it determines whether the motor can overcome the starting and running torque requirements of the driven equipment.