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Torque Formula:
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Torque is a measure of the rotational force produced by an electric motor. It represents the motor's ability to perform work and is a critical parameter in motor selection for various applications.
The calculator uses the torque formula:
Where:
Explanation: The constant 5252 comes from the relationship between horsepower, torque, and RPM, where 1 horsepower is defined as 550 foot-pounds per second.
Details: Accurate torque calculation is essential for proper motor selection, ensuring the motor can provide sufficient rotational force for the intended application without stalling or overheating.
Tips: Enter horsepower and RPM values. Both values must be positive numbers. The calculator will compute the torque in pound-feet (lb-ft).
Q1: Why is the constant 5252 used in the formula?
A: The constant 5252 comes from the conversion between different units of measurement. Since 1 horsepower equals 550 foot-pounds per second and there are 60 seconds in a minute, the conversion factor becomes (550 × 60) ÷ (2π) ≈ 5252.
Q2: What is a typical torque range for electric motors?
A: Torque values vary significantly based on motor size and type. Small motors might produce less than 1 lb-ft, while large industrial motors can produce thousands of lb-ft of torque.
Q3: How does torque relate to motor performance?
A: Torque determines a motor's ability to overcome resistance and accelerate loads. Higher torque allows a motor to handle heavier loads or accelerate more quickly.
Q4: Can this formula be used for all types of motors?
A: This formula works for any rotating machinery where horsepower and RPM are known, but specific motor types may have additional factors that affect torque production.
Q5: How does voltage affect motor torque?
A: For many electric motors, torque is proportional to the square of the voltage. Higher voltage typically results in higher torque, up to the motor's design limits.