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Torque Calculation for Motor Selection Table

Torque Equation:

\[ Torque = \frac{Load \times Radius}{Gear\ Ratio} \]

N
m
dimensionless

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1. What is Torque Calculation?

Torque calculation is essential for selecting the appropriate motor for mechanical systems. It determines the rotational force required to move a load at a certain distance from the axis of rotation, considering the gear ratio of the system.

2. How Does the Calculator Work?

The calculator uses the torque equation:

\[ Torque = \frac{Load \times Radius}{Gear\ Ratio} \]

Where:

Explanation: The equation calculates the torque required at the motor shaft after accounting for any gear reduction in the system.

3. Importance of Torque Calculation

Details: Accurate torque calculation ensures proper motor selection, prevents underpowered systems, and avoids excessive energy consumption from oversized motors.

4. Using the Calculator

Tips: Enter load in Newtons, radius in meters, and gear ratio (1 for direct drive). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What if I don't have gears in my system?
A: Use a gear ratio of 1 for direct drive systems without gear reduction.

Q2: How do I account for efficiency losses?
A: For more accurate results, divide the calculated torque by the system efficiency (typically 0.7-0.9 for gearboxes).

Q3: What units should I use?
A: The calculator uses SI units (Newtons and meters). For imperial units, convert to SI first.

Q4: Should I include safety factors?
A: Yes, multiply the calculated torque by a safety factor (typically 1.5-2) for real-world applications.

Q5: How does this relate to motor power?
A: Power (Watts) = Torque (Nm) × Angular Velocity (rad/s). You'll need both torque and speed requirements for complete motor selection.

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