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DC Motor Torque Formula:
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The DC motor torque calculation determines the rotational force produced by a DC motor based on its power output and rotational speed. Torque is a crucial parameter in motor selection and application design.
The calculator uses the torque formula:
Where:
Explanation: The formula calculates the torque output of a DC motor by converting power and speed into rotational force, accounting for the relationship between mechanical power and rotational motion.
Details: Accurate torque calculation is essential for proper motor selection, ensuring the motor can handle the required load, and for designing mechanical systems that rely on specific torque characteristics.
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 is a typical torque range for DC motors?
A: Torque ranges vary significantly based on motor size and design, from fractional Nm for small motors to hundreds 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 means better starting capability and ability to handle heavy loads.
Q4: Can this formula be used for AC motors?
A: While the basic relationship is similar, AC motor torque calculations may require additional factors for power factor and efficiency.
Q5: What affects DC motor torque output?
A: Torque is affected by armature current, magnetic field strength, motor design, and operating temperature.