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 motor 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 and rotational speed, using the standard conversion factor of 9550.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for proper motor selection, mechanical design, and ensuring that the motor can handle the required load without stalling or overheating.

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.

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 9550 used in the formula?
A: The constant 9550 comes from the conversion between different units of power and speed (1 kW = 1000 W, 1 minute = 60 seconds, and 2π radians per revolution).

Q2: What are typical torque values for electric motors?
A: Torque values vary widely depending on motor size and type, ranging from less than 1 Nm for small motors to several thousand Nm for large industrial motors.

Q3: How does torque relate to motor performance?
A: Torque determines a motor's ability to accelerate loads and overcome resistance. Higher torque means better starting and load-carrying capability.

Q4: Can this formula be used for all types of motors?
A: This formula provides theoretical torque for ideal conditions. Actual torque may vary due to efficiency losses, motor design, and operating conditions.

Q5: How does speed affect motor torque?
A: For a given power, torque decreases as speed increases. This is why motors often have higher torque at lower speeds.