1. What is Electric Motor Torque?

Electric motor torque is the rotational force produced by the motor, measured in Newton-meters (Nm). It represents the motor's ability to perform work and overcome resistance to rotation.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( K_t \) — Torque constant (Nm/A)
• \( I \) — Current (A)

Explanation: The torque constant (K_t) represents the amount of torque produced per ampere of current flowing through the motor windings.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for motor selection, sizing applications, determining load capacity, and ensuring proper motor performance in various industrial and commercial applications.

4. Using the Calculator

Tips: Enter torque constant in Nm/A and current in amperes. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the torque constant (K_t)?
A: The torque constant is a motor-specific parameter that indicates how much torque the motor produces per unit of current. It's typically provided in the motor datasheet.

Q2: How does torque relate to motor power?
A: Power (P) = Torque (T) × Angular velocity (ω). Higher torque at a given speed means more mechanical power output.

Q3: What factors affect motor torque?
A: Torque depends on current, magnetic field strength, number of windings, and motor design. It's directly proportional to current when other factors remain constant.

Q4: What are typical torque constant values?
A: Torque constants vary by motor type and size, typically ranging from 0.01 Nm/A for small motors to several Nm/A for large industrial motors.

Q5: Can this formula be used for all motor types?
A: This formula applies specifically to DC motors and brushless DC motors. AC motors have different torque characteristics and calculation methods.