1. What is Electric Motor Torque?

Torque is the rotational force produced by an electric motor, measured in Newton-meters (Nm). It's a crucial parameter in motor testing and selection, indicating how much load the motor can handle.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( Power \) — Motor power output in kilowatts (kW)
• \( RPM \) — Rotational speed in revolutions per minute
• 9550 — Conversion factor combining various unit conversions

Explanation: The formula relates the motor's power output to its rotational speed, showing that torque decreases as speed increases for a given power.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for motor selection, performance testing, and ensuring the motor can handle the required mechanical load.

4. Using the Calculator

Tips: Enter power in kW and RPM. Both values must be positive numbers (RPM must be greater than 0).

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: It's a conversion factor that combines the conversion from kW to watts (1000), from minutes to seconds (60), and from radians to revolutions (2π).

Q2: What's typical torque for industrial motors?
A: Varies greatly by motor size and type. Small motors might produce 1-10 Nm, while large industrial motors can produce thousands of Nm.

Q3: How does torque relate to motor performance?
A: Torque determines the motor's ability to overcome load resistance. Higher torque means better ability to start under load and handle variable loads.

Q4: Does this formula work for all motor types?
A: It works for any rotating machinery where power and speed are known, but actual torque may vary due to efficiency losses.

Q5: How to increase motor torque?
A: Options include using a gear reducer, selecting a motor with higher power, or choosing a motor designed for lower speed/higher torque operation.