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Motor Torque Formula:
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Motor torque calculation determines the rotational force produced by an electric motor based on its power output and rotational speed. Torque is a crucial parameter in motor selection and mechanical design applications.
The calculator uses the torque formula:
Where:
Explanation: The constant 9550 is derived from unit conversions between kilowatts, Newton-meters, and revolutions per minute, providing accurate torque calculations for motor applications.
Details: Accurate torque calculation is essential for proper motor selection, ensuring the motor can handle the required mechanical load, preventing overload conditions, and optimizing energy efficiency in various industrial applications.
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.
Q1: Why is the constant 9550 used in the formula?
A: The constant 9550 comes from unit conversion factors: 60 seconds/minute divided by 2π radians/revolution, multiplied by 1000 watts/kilowatt.
Q2: What are typical torque values for different motor types?
A: Torque values vary significantly based on motor size and type. Small motors may produce 1-10 Nm, while large industrial motors can produce thousands of Nm.
Q3: How does torque relate to motor performance?
A: Torque determines a motor's ability to overcome resistance and accelerate loads. Higher torque enables better starting performance and handling of heavy loads.
Q4: Can this formula be used for all motor types?
A: This formula provides theoretical torque for ideal conditions. Actual torque may vary due to efficiency losses, power factor, and motor design characteristics.
Q5: How important is torque in motor selection?
A: Torque is critical for ensuring the motor can start and run the intended load without stalling or overheating, making it a key factor in motor specification.