1. What is Torque Calculation from Power and RPM?

Definition: This calculator estimates the torque produced by a rotating system based on its power output and rotational speed.

Purpose: It helps engineers, mechanics, and technicians understand the rotational force in mechanical systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (pound-feet)
• \( P_w \) — Power (watts)
• \( RPM \) — Rotational speed (revolutions per minute)

Explanation: The formula converts power (watts) to torque (lb-ft) by accounting for the rotational speed and unit conversions.

3. Importance of Torque Calculation

Details: Torque is crucial for designing mechanical systems, selecting motors, and understanding system performance.

4. Using the Calculator

Tips: Enter the power in watts and RPM (revolutions per minute). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 60 in the numerator?
A: The factor of 60 converts power per second (watts) to power per minute for RPM compatibility.

Q2: What's the relationship between torque and power?
A: Power is the rate of doing work, while torque is the rotational force. Power = Torque × Angular Velocity.

Q3: Can I use horsepower instead of watts?
A: Yes, but you'll need to convert horsepower to watts (1 HP = 745.7 watts) first.

Q4: What if my RPM is zero?
A: The calculation is undefined at zero RPM since you can't have torque without rotation.

Q5: How accurate is this calculation?
A: It provides theoretical torque. Actual torque may vary due to efficiency losses and other factors.