1. What is a Compressor RPM Ratio Pulley Calculator?

Definition: This calculator determines the output RPM of a compressor based on input RPM and pulley diameters.

Purpose: It helps mechanics and engineers properly size pulleys to achieve desired compressor speeds.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( RPM2 \) — Output RPM (compressor speed)
• \( RPM1 \) — Input RPM (motor speed)
• \( D1 \) — Drive pulley diameter (inches)
• \( D2 \) — Driven pulley diameter (inches)

Explanation: The output speed is inversely proportional to the ratio of pulley diameters.

3. Importance of Proper RPM Calculation

Details: Correct RPM ensures compressor operates efficiently, prevents damage from overspeeding, and maintains proper pressure output.

4. Using the Calculator

Tips: Enter the motor RPM, drive pulley diameter, and driven pulley diameter. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What happens if my output RPM is too high?
A: Excessive RPM can cause compressor overheating, premature wear, and potential failure.

Q2: How do I measure pulley diameters?
A: Measure across the outer edges of the pulley where the belt rides.

Q3: Can I use this for other belt-driven systems?
A: Yes, this formula works for any belt and pulley system.

Q4: What's a typical RPM range for compressors?
A: Most compressors operate between 600-1800 RPM, but check your manufacturer's specifications.

Q5: How does belt width affect this calculation?
A: Belt width doesn't affect RPM ratio but must be properly sized for the pulley and power requirements.