1. What is Gear Ratio of Spur Gear?

The Gear Ratio of Spur Gear is the ratio of output gear speed to the input gear speed or the ratio of number of teeth on gear to that on the pinion. It determines the mechanical advantage and speed transformation in gear systems.

2. How Does the Calculator Work?

The calculator uses the gear ratio formula:

Where:

• \( G \) — Gear Ratio of Spur Gear
• \( z \) — Number of Teeth on Spur Gear
• \( z_p \) — Number of Teeth on Pinion

Explanation: The formula calculates the ratio by dividing the number of teeth on the spur gear by the number of teeth on the pinion.

3. Importance of Gear Ratio Calculation

Details: Accurate gear ratio calculation is crucial for designing mechanical systems, determining torque and speed relationships, and ensuring proper gear meshing and performance in various applications.

4. Using the Calculator

Tips: Enter the number of teeth on both the spur gear and pinion. Both values must be positive integers greater than zero for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical gear ratio range for spur gears?
A: Spur gear ratios typically range from 1:1 to 6:1, though higher ratios are possible with multiple gear stages.

Q2: How does gear ratio affect mechanical advantage?
A: A higher gear ratio provides greater mechanical advantage (torque multiplication) but reduces output speed proportionally.

Q3: Can gear ratio be less than 1?
A: Yes, a gear ratio less than 1 indicates speed increase with corresponding torque reduction.

Q4: What factors should be considered besides tooth count?
A: Module, pressure angle, material strength, and lubrication should also be considered for complete gear design.

Q5: How accurate is this calculation?
A: The calculation provides the theoretical gear ratio. Actual performance may vary due to manufacturing tolerances, wear, and other mechanical factors.