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Motor Torque Equation:
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The motor torque formula calculates the rotational force produced by an electric motor based on its power output and rotational speed. This is essential for selecting appropriate motors for various applications and ensuring proper system design.
The calculator uses the torque equation:
Where:
Explanation: The constant 9550 comes from the conversion between different units of power and rotational speed to yield torque in Newton-meters (N·m).
Details: Accurate torque calculation is crucial for motor selection, mechanical system design, ensuring proper load handling, and preventing motor overload or premature failure.
Tips: Enter power in kilowatts (kW) and rotational speed in RPM (revolutions per minute). Both values must be positive numbers greater than zero.
Q1: Why is the constant 9550 used in the formula?
A: The constant 9550 comes from unit conversions: 60,000/(2π) ≈ 9550, which converts power in kW and speed in RPM to torque in N·m.
Q2: Can this formula be used for all types of motors?
A: This formula provides theoretical torque for electric motors at a given power and speed, but actual torque may vary based on motor type, efficiency, and operating conditions.
Q3: What is the relationship between torque, power, and speed?
A: Torque is inversely proportional to speed when power is constant. Higher speed means lower torque, and vice versa, for the same power output.
Q4: How does motor efficiency affect torque calculation?
A: The formula calculates theoretical output torque. Actual torque may be lower due to efficiency losses in the motor.
Q5: Can I use different units with this formula?
A: The formula is specific to power in kW and speed in RPM. For other units, different conversion constants would be required.