1. What is the Air Cylinder CFM Calculator?

The Air Cylinder CFM Calculator determines the air consumption rate for pneumatic cylinders in cubic feet per minute (CFM). This calculation is essential for proper compressor sizing and pneumatic system design.

2. How Does the Calculator Work?

The calculator uses the CFM formula:

Where:

• \( Area \) — Cylinder bore area in square inches (in²)
• \( Stroke \) — Cylinder stroke length in inches (in)
• \( Cycles \) — Number of complete cycles per minute
• \( 1728 \) — Conversion factor (12³) from cubic inches to cubic feet

Explanation: The formula calculates the volume of air displaced per minute by converting the total cubic inches of air consumed to cubic feet.

3. Importance of CFM Calculation

Details: Accurate CFM calculation ensures proper compressor selection, prevents system overload, optimizes energy consumption, and maintains consistent pneumatic system performance.

4. Using the Calculator

Tips: Enter cylinder area in square inches, stroke length in inches, and cycles per minute. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: How do I calculate cylinder area?
A: Area = π × (Bore Diameter/2)². For example, a 2-inch bore cylinder has area = 3.1416 × (1)² = 3.1416 in².

Q2: What is a complete cycle?
A: One complete cycle includes both extension and retraction of the cylinder.

Q3: Why divide by 1728?
A: 1728 converts cubic inches to cubic feet (12 inches × 12 inches × 12 inches = 1728 cubic inches per cubic foot).

Q4: Should I add safety margin to the calculated CFM?
A: Yes, typically add 25-50% safety margin to account for leaks, efficiency losses, and future expansions.

Q5: Does this account for compressed air?
A: This calculates displacement CFM. For compressed air requirements, multiply by the operating pressure ratio (if needed).