1. What is Brushless Motor Torque?

Torque is the rotational force produced by a brushless motor, measured in Newton-meters (Nm). It's a crucial parameter that determines the motor's ability to perform work and overcome resistance.

2. How Does the Calculator Work?

The calculator uses the torque equation:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Speed (RPM)

Explanation: The constant 9550 comes from unit conversion (1 kW = 1000 W, 1 RPM = 2π/60 rad/s). The equation shows that torque is inversely proportional to speed when power is constant.

3. Importance of Torque Calculation

Details: Knowing the torque helps in selecting the right motor for an application, ensuring it 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.

5. Frequently Asked Questions (FAQ)

Q1: Why is torque important in motor selection?
A: Torque determines the motor's ability to start and accelerate a load. Insufficient torque may cause the motor to stall or fail to reach desired speed.

Q2: What's the relationship between torque and speed?
A: For a given power, torque decreases as speed increases. This is why motors often have high torque at low speeds.

Q3: How does voltage affect torque?
A: In brushless motors, torque is directly proportional to current, which is affected by voltage. Higher voltage can allow for higher torque output.

Q4: What are typical torque values for brushless motors?
A: Torque varies widely by motor size. Small hobby motors might produce 0.1-1 Nm, while industrial motors can produce hundreds of Nm.

Q5: Can I use this for AC or DC motors?
A: This formula works for any motor type when you know the power and speed, but brushless motors have specific torque characteristics.