Kw To Ft Lbs Torque Calculator

Torque Calculation Formula:

\[ \text{Torque (ft-lb)} = \frac{\text{kW} \times 737.562}{\text{RPM}} \]

Torque:

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1. What is the kW to ft-lb Torque Calculation?

The kW to ft-lb torque calculation converts power in kilowatts to torque in foot-pounds, considering the rotational speed in revolutions per minute (RPM). This is essential in mechanical engineering and automotive applications to understand the rotational force produced by engines and motors.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \text{Torque (ft-lb)} = \frac{\text{kW} \times 737.562}{\text{RPM}} \]

Where:

\( kW \) — Power in kilowatts
\( RPM \) — Rotational speed in revolutions per minute
737.562 — Conversion factor from kilowatts to foot-pounds

Explanation: The formula calculates torque by dividing power by angular speed, with appropriate unit conversions.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for designing mechanical systems, selecting appropriate motors and engines, and understanding performance characteristics in automotive and industrial applications.

4. Using the Calculator

Tips: Enter power in kilowatts and rotational speed in RPM. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 737.562?
A: This factor converts kilowatts to foot-pounds per second and accounts for the RPM to radians per second conversion (1 kW = 737.562 ft-lb/s, and torque = power / angular speed).

Q2: What is the relationship between power, torque, and RPM?
A: Power is proportional to the product of torque and RPM. For a given power, torque decreases as RPM increases, and vice versa.

Q3: Can this calculator be used for electric motors?
A: Yes, this calculation applies to any rotating machinery including electric motors, internal combustion engines, and turbines.

Q4: What are typical torque values for automotive engines?
A: Typical passenger car engines produce 100-400 ft-lb of torque, with diesel engines generally producing higher torque at lower RPM than gasoline engines.

Q5: How does torque relate to vehicle performance?
A: Torque determines a vehicle's acceleration and pulling power, while horsepower (which incorporates RPM) relates to top speed and overall performance.