1. What is Torque in Motors?

Torque is the rotational force produced by a motor. It's a crucial parameter in motor selection and mechanical design, determining how much load the motor can handle at a given speed.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( Torque \) — Rotational force (N·m)
• \( P \) — Power (kW)
• \( RPM \) — Revolutions per minute
• 9550 — Conversion factor combining unit conversions and constants

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

3. Importance of Torque Calculation

Details: Proper torque calculation ensures the motor can handle the mechanical load without stalling or overheating. It's essential for sizing motors in applications like pumps, conveyors, and machine tools.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and rotational speed in RPM. Both values must be positive numbers. The calculator will compute the torque in Newton-meters (N·m).

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: 9550 combines the conversion factors between kW to W, minutes to seconds, and radians to revolutions (60000/2π ≈ 9550).

Q2: What's the difference between torque and power?
A: Power is the rate of doing work, while torque is the rotational force. Power = Torque × Angular Velocity.

Q3: How does gear reduction affect torque?
A: Gear reduction increases output torque while decreasing speed, maintaining approximately the same power (minus efficiency losses).

Q4: What are typical torque values for motors?
A: Small motors might produce 1-10 N·m, while industrial motors can produce hundreds or thousands of N·m, depending on size and speed.

Q5: How do I account for efficiency?
A: For more precise calculations, divide the result by the motor's efficiency (as a decimal) to account for energy losses.