1. What is Torque Calculation for Electric Motor?

Definition: This calculator computes the torque produced by an electric motor based on its horsepower and rotational speed (RPM).

Purpose: It helps engineers and technicians determine the twisting force a motor can generate, which is crucial for mechanical design and power transmission applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (pound-feet)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute

Explanation: The constant 5252 comes from the conversion between rotational power and linear power (1 HP = 550 ft-lb/sec).

3. Importance of Torque Calculation

Details: Proper torque calculation ensures motors are properly sized for their applications, prevents mechanical overload, and helps in selecting appropriate power transmission components.

4. Using the Calculator

Tips: Enter the motor's horsepower and RPM. Both values must be greater than 0. The calculator will output torque in pound-feet (lb-ft).

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 used in the formula?
A: It's the conversion factor between horsepower (550 ft-lb/sec) and RPM (1 revolution = 2π radians), derived from the relationship between power and torque.

Q2: What's a typical torque range for electric motors?
A: Torque varies widely based on motor size and type, from fractional lb-ft for small motors to thousands of lb-ft for large industrial motors.

Q3: Does this formula work for all motor types?
A: Yes, it applies to all rotating machinery, though actual torque may vary slightly due to efficiency factors.

Q4: How does torque relate to motor performance?
A: Torque determines a motor's ability to do work - higher torque means greater ability to overcome resistance or move heavier loads.

Q5: What if my motor specifications are in kW rather than HP?
A: First convert kW to HP (1 kW ≈ 1.341 HP), then use the calculator.