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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 mechanical engineering and motor selection for various applications.
The calculator uses the torque formula:
Where:
Explanation: The formula converts power and speed into torque, accounting for the relationship between rotational force, power output, and rotational velocity.
Details: Accurate torque calculation is essential for proper motor selection, mechanical design, ensuring adequate starting torque, and preventing motor overload 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 conversions (60 seconds/minute × 1000 watts/kilowatt ÷ 2π radians/revolution) to convert between kW, rpm, and Nm.
Q2: What are typical torque values for electric motors?
A: Torque values vary significantly based on motor size and type, 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 the motor's ability to overcome load resistance. Higher torque allows motors to start under heavy loads and maintain operation under varying conditions.
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, motor design, and operating conditions.
Q5: How important is torque in motor selection?
A: Critical. Torque requirements must match the application's needs, including starting torque, running torque, and maximum torque capabilities to ensure proper operation.