1. What is a Stepper Motor Torque Calculator?

Definition: This calculator estimates the torque output of a stepper motor based on its torque constant and the current supplied.

Purpose: It helps engineers and hobbyists determine the torque capability of stepper motors for various applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque output (Nm)
• \( K_T \) — Torque constant (Nm/A)
• \( I \) — Current (amperes)

Explanation: The torque constant multiplied by the current gives the theoretical torque output of the stepper motor.

3. Importance of Torque Calculation

Details: Proper torque estimation ensures the motor can handle the required load, prevents stalling, and helps in selecting appropriate drivers.

4. Using the Calculator

Tips: Enter the torque constant (typically provided in motor datasheets) and the operating current. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find the torque constant?
A: The torque constant (K_T) is typically listed in the motor's datasheet, often in Nm/A or oz-in/A.

Q2: Does this calculate holding torque or running torque?
A: This calculates the theoretical maximum torque at a given current. Actual running torque may be lower due to speed and other factors.

Q3: How does temperature affect the torque?
A: Higher temperatures can reduce torque output due to increased resistance and potential current limiting.

Q4: Can I use this for other motor types?
A: This formula specifically applies to stepper motors. Other motor types may have different torque characteristics.

Q5: Why is my actual torque lower than calculated?
A: Real-world factors like driver limitations, voltage, speed, and mechanical losses can reduce actual torque below theoretical values.