1. What is a Torque Calculator for Motor?

Definition: This calculator estimates the torque output of a motor based on its horsepower and rotational speed (RPM).

Purpose: It helps engineers, mechanics, and motor enthusiasts determine the torque characteristics of motors for various applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (pound-feet)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute
• 5252 — Conversion constant (derived from the relationship between HP, torque, and RPM)

Explanation: The formula shows that torque is inversely proportional to RPM when horsepower is constant.

3. Importance of Torque Calculation

Details: Torque determines a motor's ability to perform work and is crucial for selecting motors for specific applications where rotational force is important.

4. Using the Calculator

Tips: Enter the motor's horsepower and RPM values. Both values must be greater than 0 for accurate calculations.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 used in the formula?
A: 5252 is the RPM at which horsepower and torque (in lb-ft) are equal, derived from the conversion between rotational and linear work measurements.

Q2: What's the relationship between torque and RPM?
A: For a given horsepower, torque decreases as RPM increases, and vice versa.

Q3: Can I use this for electric motors?
A: Yes, this formula works for any motor type as long as you know the horsepower and RPM.

Q4: How does torque affect vehicle performance?
A: Higher torque at lower RPMs provides better acceleration and towing capacity.

Q5: What's a typical torque value for car engines?
A: Passenger cars typically produce 100-400 lb-ft of torque, while trucks may produce 400-1000+ lb-ft.