1. What is an Electric Motor HP to Torque Calculator?

Definition: This calculator converts motor horsepower and RPM to torque in pound-feet (lb-ft).

Purpose: It helps engineers, mechanics, and technicians determine the torque output of electric motors for proper equipment selection and performance analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (lb-ft)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute

Explanation: The constant 5252 comes from the relationship between rotational speed and power in the imperial system.

3. Importance of Torque Calculation

Details: Torque determines a motor's ability to perform work and is critical for sizing motors to mechanical loads.

4. Using the Calculator

Tips: Enter the motor horsepower and RPM. Both values must be > 0. The result shows torque in pound-feet.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 used in the formula?
A: 5252 is the RPM at which horsepower and torque values cross (are equal) in the imperial system.

Q2: What's the difference between torque and horsepower?
A: Torque is rotational force, while horsepower is the rate at which work is performed (torque × RPM).

Q3: Does this work for all motor types?
A: Yes, the formula applies to all rotating machinery, though electric motors typically have different torque curves than combustion engines.

Q4: How does torque relate to motor performance?
A: Higher torque at lower RPMs indicates better starting capability for heavy loads.

Q5: What if I need torque in different units?
A: 1 lb-ft = 1.3558 Nm. For metric calculations, use kW instead of HP (1 HP = 0.7457 kW).