1. What is Motor Torque Requirement?

The motor torque requirement is the amount of rotational force needed from a motor to move a given load at a specified radius, accounting for any gear reduction in the system. It's a critical parameter in motor selection and mechanical design.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( Load \) — Force applied (in Newtons)
• \( Radius \) — Distance from center of rotation (in meters)
• \( Gear\ Ratio \) — Ratio of input to output speed (dimensionless)

Explanation: The equation calculates the torque required at the motor shaft after accounting for any gear reduction. Higher gear ratios reduce the required motor torque.

3. Importance of Torque Calculation

Details: Accurate torque calculation ensures proper motor selection, prevents motor overload, and helps design efficient mechanical systems. Underestimating torque can lead to motor failure, while overestimating leads to oversized, inefficient systems.

4. Using the Calculator

Tips:

• Enter load in Newtons (1 kg ≈ 9.81 N at Earth's surface)
• Enter radius in meters (convert from mm by dividing by 1000)
• For direct drive (no gears), use gear ratio = 1
• For speed reduction (torque increase), gear ratio > 1

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between torque and power?
A: Torque is rotational force (Nm), while power is the rate of doing work (W). Power = Torque × Angular Velocity.

Q2: How does gear ratio affect torque?
A: A gear ratio > 1 reduces speed but increases torque at the output. The motor sees reduced torque requirement.

Q3: What safety factor should I use?
A: Typical safety factors range from 1.5 to 3 depending on application criticality and load variability.

Q4: How do I account for friction?
A: For systems with significant friction, add 10-30% to the calculated torque or measure actual requirements.

Q5: What about acceleration torque?
A: This calculator gives continuous torque. For acceleration, add \( Torque = Moment\ of\ Inertia \times Angular\ Acceleration \).