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Motor Torque Calculator

Motor Torque Formula:

\[ T = \frac{HP \times 5252}{RPM} \]

HP
rev/min

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1. What Is Motor Torque?

Torque is a measure of the rotational force produced by a motor. It represents the motor's ability to do work and is typically measured in pound-feet (lb-ft) or Newton-meters (N·m).

2. How Does The Calculator Work?

The calculator uses the torque formula:

\[ T = \frac{HP \times 5252}{RPM} \]

Where:

Explanation: The constant 5252 is derived from the relationship between horsepower, torque, and RPM, where 1 horsepower is defined as 550 foot-pounds per second.

3. Importance Of Torque Calculation

Details: Calculating torque is essential for selecting appropriate motors for specific applications, determining mechanical advantage in gear systems, and ensuring proper performance in automotive and industrial applications.

4. Using The Calculator

Tips: Enter horsepower and RPM values. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between torque and horsepower?
A: Torque is a measure of rotational force, while horsepower is a measure of work done over time. Horsepower equals torque multiplied by RPM divided by 5252.

Q2: Why is 5252 used in the formula?
A: 5252 is the constant that results from the conversion between different units of measurement, specifically relating foot-pounds, minutes, and seconds in the definition of horsepower.

Q3: Can I use this formula for electric motors?
A: Yes, this formula applies to all types of motors as long as you have accurate horsepower and RPM measurements.

Q4: How does gear reduction affect torque?
A: Gear reduction increases output torque while decreasing output speed, maintaining the same power (assuming no efficiency losses).

Q5: What are typical torque values for different motors?
A: Torque values vary significantly based on motor size and type. Small electric motors might produce a few lb-ft of torque, while large diesel engines can produce over 1000 lb-ft.

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