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Motor Torque Formula:
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Motor torque is the rotational force produced by an electric motor. It represents the motor's ability to perform work and is a crucial parameter in mechanical engineering and motor selection.
The calculator uses the motor torque formula:
Where:
Explanation: The formula calculates the torque output of a motor based on its power rating and rotational speed, accounting for the conversion between different units of measurement.
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 motor performance.
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: 60,000/(2π) ≈ 9550, which converts between kW, rpm, and Nm units.
Q2: What are typical torque values for different motors?
A: Torque values vary significantly based on motor type and size. Small motors may produce fractions of Nm, while large industrial motors can produce thousands of Nm.
Q3: Can this formula be used for all types of motors?
A: This formula provides theoretical torque for electric motors operating at rated conditions. Actual torque may vary due to efficiency losses and operating conditions.
Q4: How does torque relate to motor performance?
A: Torque determines a motor's ability to accelerate loads and overcome resistance. Higher torque means better starting capability and load handling capacity.
Q5: What if I have power in horsepower instead of kilowatts?
A: Convert horsepower to kilowatts first (1 hp = 0.7457 kW) before using the calculator, or use the alternative formula: T = (P × 5252) / N for horsepower input.