1. What is Motor Torque Calculation?

Motor torque calculation determines the rotational force required from a motor based on power output and rotational speed. It's essential for proper motor selection and system design.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Rotational speed (rpm)

Explanation: The constant 9550 is derived from unit conversion factors to provide torque in Newton-meters when power is in kilowatts and speed is in revolutions per minute.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for selecting appropriate motors, ensuring mechanical compatibility, preventing overload conditions, and optimizing energy efficiency in mechanical systems.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and rotational 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 the constant 9550 used in the formula?
A: The constant 9550 comes from unit conversion factors: 60,000/(2π) ≈ 9550, which converts power (kW) and speed (rpm) to torque (Nm).

Q2: What are typical torque values for industrial motors?
A: Torque values vary widely based on motor size and application, 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 overcome load resistance. Higher torque enables motors to handle heavier loads or accelerate faster.

Q4: Are there limitations to this calculation?
A: This formula provides theoretical torque. Actual torque may vary due to efficiency losses, temperature effects, and mechanical transmission losses.

Q5: Can this formula be used for all motor types?
A: This formula applies to various motor types (AC, DC, induction) when calculating theoretical output torque based on power and speed specifications.