Motor Torque Requirement Calculator

Torque Formula:

\[ T = \frac{F \times r}{\text{Efficiency}} \]

Torque Required (T):

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1. What Is Motor Torque Requirement?

Motor torque requirement calculation determines the rotational force needed to drive a mechanical load, considering force applied, radius of application, and system efficiency. This is essential for proper motor selection and system design.

2. How Does The Calculator Work?

The calculator uses the torque formula:

\[ T = \frac{F \times r}{\text{Efficiency}} \]

Where:

\( T \) — Torque required (N·m)
\( F \) — Force applied (N)
\( r \) — Radius from center (m)
\( \text{Efficiency} \) — System efficiency (fraction, 0-1)

Explanation: The formula calculates the torque needed to overcome a given force at a specified distance from the rotation center, accounting for mechanical losses through the efficiency factor.

3. Importance Of Torque Calculation

Details: Accurate torque calculation is crucial for selecting appropriate motors, preventing under-sizing (which causes failure) or over-sizing (which increases cost and energy consumption).

4. Using The Calculator

Tips: Enter force in newtons, radius in meters, and efficiency as a decimal (e.g., 0.85 for 85% efficiency). All values must be positive, with efficiency between 0 and 1.

5. Frequently Asked Questions (FAQ)

Q1: What is torque in simple terms?
A: Torque is the rotational equivalent of linear force - it's the twisting force that causes rotation around an axis.

Q2: Why include efficiency in the calculation?
A: Efficiency accounts for mechanical losses due to friction, heat, and other factors, ensuring the motor can deliver the required output torque.

Q3: What are typical efficiency values?
A: Efficiency varies by system: gearboxes (85-95%), belt drives (90-98%), direct drive (95-98%). Always consult manufacturer specifications.

Q4: How does radius affect torque requirement?
A: Torque increases linearly with radius - doubling the radius doubles the required torque for the same force.

Q5: Should safety factors be applied?
A: Yes, typically apply a 1.5-2.0 safety factor to calculated torque to account for dynamic loads, start-up conditions, and unexpected variations.