1. What is the Torque Calculation Formula?

The torque calculation formula for coreless brush motors relates power (in kW) and rotational speed (in RPM) to torque (in Nm). This is a fundamental equation in motor performance analysis.

2. How Does the Calculator Work?

The calculator uses the torque equation:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Rotational speed (RPM)

Explanation: The constant 9550 comes from unit conversions (1 kW = 1000 W, 1 RPM = 2π/60 rad/s).

3. Importance of Torque Calculation

Details: Torque is a critical parameter in motor selection and application design. It determines the motor's ability to perform work and overcome load resistance.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and speed in revolutions per minute (RPM). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why use 9550 in the formula?
A: It's the conversion factor derived from (60 × 1000)/(2π) to convert between kW, RPM and Nm.

Q2: What are typical torque values for coreless brush motors?
A: Varies by size, but typically ranges from 0.1 mNm to several Nm for larger industrial motors.

Q3: How does torque relate to motor performance?
A: Torque determines the motor's ability to accelerate loads and maintain speed under load conditions.

Q4: What affects torque in coreless brush motors?
A: Magnetic flux density, number of windings, current, and motor geometry are key factors.

Q5: How to increase torque output?
A: Increase current (within limits), use stronger magnets, or add more windings (which may reduce speed).