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Motor Torque Equation:
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Motor torque is the rotational force produced by a motor. It represents the motor's ability to perform work and is a critical parameter in mechanical systems where rotational motion is involved.
The calculator uses the motor torque equation:
Where:
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.
Details: Accurate torque calculation is essential for motor selection, system design, and ensuring proper operation of mechanical systems. It helps determine if a motor can provide sufficient rotational force for a specific application.
Tips: Enter power in kilowatts (kW) and 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 × 1000 watts/kilowatt ÷ 2π radians/revolution) to provide torque in Newton-meters.
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 a motor's ability to overcome resistance and accelerate loads. Higher torque allows motors to handle heavier loads or accelerate faster.
Q4: Can this formula be used for all types of motors?
A: This formula provides theoretical torque based on power and speed, applicable to various motor types, though actual torque may vary due to efficiency factors and motor characteristics.
Q5: How does torque change with motor speed?
A: For constant power applications, torque decreases as speed increases, following the inverse relationship shown in the formula T = P/ω (where ω is angular velocity).