Home Back

Rated Motor Torque Calculator

Formula Used:

\[ Tr = \frac{P \times 4500}{2 \times \pi \times N} \]

Watt
Radian per Second

Unit Converter ▲

Unit Converter ▼

From: To:

1. What Is The Rated Motor Torque?

The Rated Motor Torque is the maximum continuous torque that the motor produces at rated RPM when working normally and without overheating. It is a critical parameter in motor selection and application design.

2. How Does The Calculator Work?

The calculator uses the formula:

\[ Tr = \frac{P \times 4500}{2 \times \pi \times N} \]

Where:

Explanation: This formula calculates the torque output based on the power input and the rotational speed of the motor.

3. Importance Of Rated Motor Torque Calculation

Details: Accurate torque calculation is essential for proper motor sizing, ensuring efficient operation, preventing motor overload, and maintaining system reliability in various mechanical applications.

4. Using The Calculator

Tips: Enter power in watts and speed in radians per second. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is 4500 used in the formula?
A: The constant 4500 is a conversion factor that accounts for unit conversions between power (watts), torque (Newton meters), and rotational speed.

Q2: What is the typical range for rated motor torque?
A: Rated motor torque varies significantly based on motor size and application, ranging from fractional Newton meters for small motors to thousands of Newton meters for large industrial motors.

Q3: How does speed affect motor torque?
A: For a given power output, torque is inversely proportional to speed. Higher speeds result in lower torque, and vice versa, when power remains constant.

Q4: Can this formula be used for all types of motors?
A: This formula provides a general calculation for torque based on power and speed, but specific motor types may have additional factors that affect torque characteristics.

Q5: What are common applications requiring rated motor torque calculation?
A: Common applications include industrial mixers, conveyor systems, pumps, fans, electric vehicles, and any machinery requiring precise motor torque specification.

Rated Motor Torque Calculator© - All Rights Reserved 2025