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Torque Formula:
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Electric motor torque calculation determines the rotational force produced by an electric motor based on its horsepower and rotational speed. Torque is a crucial parameter for understanding motor performance and selecting appropriate motors for specific applications.
The calculator uses the torque formula:
Where:
Explanation: The formula calculates the torque output of an electric motor by relating horsepower and rotational speed through the conversion constant 5252, which comes from the relationship between power, torque, and rotational speed.
Details: Accurate torque calculation is essential for motor selection, mechanical design, and ensuring proper performance in applications such as industrial machinery, automotive systems, and power tools.
Tips: Enter horsepower and RPM values. Both values must be positive numbers greater than zero for accurate calculation.
Q1: Why is 5252 used in the torque formula?
A: 5252 is the conversion constant that comes from the relationship between horsepower, torque, and RPM (1 HP = 550 ft-lb/s, and there are 60 seconds in a minute and 2π radians in a revolution).
Q2: What are typical torque values for electric motors?
A: Torque values vary widely depending on motor size and type, ranging from fractional lb-ft for small motors to thousands of lb-ft for large industrial motors.
Q3: How does torque relate to motor performance?
A: Torque determines the motor's ability to overcome resistance and perform work. Higher torque means better ability to handle heavy loads and accelerate quickly.
Q4: Are there different torque measurements?
A: Yes, torque can be measured in different units (N·m, kg·cm, oz·in), but this calculator uses lb-ft, which is common in imperial systems.
Q5: Does this formula work for all types of electric motors?
A: This formula provides theoretical torque calculation based on power and speed, but actual torque may vary depending on motor efficiency, type (AC/DC), and operating conditions.