1. What is Electric Motor Torque?

Torque is the rotational force produced by an electric motor. It represents the motor's ability to perform work and is a crucial parameter in motor selection and application design.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

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

Explanation: The constant 5252 comes from the relationship between horsepower, torque, and rotational speed in the imperial measurement system.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for proper motor sizing, ensuring the motor can handle the required load without stalling or overheating.

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: Why is 5252 used in the formula?
A: 5252 is a constant derived from the relationship between horsepower, torque, and RPM in the imperial system (1 HP = 550 ft-lb/s).

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 the motor's ability to start under load and accelerate. Higher torque means better starting capability and faster acceleration.

Q4: Are there different types of torque?
A: Yes, including starting torque, breakdown torque, and full-load torque. This calculator provides the full-load torque based on rated horsepower and RPM.

Q5: Can this formula be used for all electric motors?
A: This formula is generally applicable for most AC and DC electric motors when operating at their rated conditions.