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Torque Formula:
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The torque formula calculates the rotational force produced by an electric motor based on its horsepower and rotational speed. It provides a fundamental measure of the motor's ability to perform work.
The calculator uses the torque formula:
Where:
Explanation: The constant 5252 is derived from the relationship between horsepower, torque, and rotational speed, where 1 horsepower equals 550 foot-pounds per second.
Details: Accurate torque calculation is crucial for motor selection, mechanical design, and ensuring proper performance in various applications from industrial machinery to automotive systems.
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 formula?
A: The constant 5252 comes from the conversion between horsepower (550 ft-lb/sec) and RPM (5252 = 33000/2π), where 33000 is the foot-pounds per minute in one horsepower.
Q2: What are typical torque values for electric motors?
A: Torque values vary significantly based on motor size and type, ranging from less than 1 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 a motor's ability to overcome resistance and accelerate loads. Higher torque means better starting capability and ability to handle heavy loads.
Q4: Are there limitations to this formula?
A: This formula provides theoretical maximum torque and assumes 100% efficiency. Actual torque may vary due to mechanical losses, motor design, and operating conditions.
Q5: Can this formula be used for all types of motors?
A: While the basic relationship applies to all rotational systems, specific motor types (AC, DC, servo, etc.) may have different torque characteristics that require additional considerations.