Double-acting cylinder cycle

Pneumatic air consumption

Inputs

Cylinder boreDNominal internal bore diameter.

Rod diameterdRod diameter used for retract-side volume.

StrokesFull extend and full retract travel per stated double-acting cycle.

Operating pressurePGauge pressure at the cylinder; atmospheric pressure is added for the normalized free-air approximation.

Cycle rateccycles/minCompleted double-acting cycles per minute.

Ideal normalized free air per cycle

6.3225

NL/cycle

Ideal normalized free-air rate

113.8

NL/min

Cylinder swept volume per cycle

0.90321

L/cycle

Vfree = (Aextend + Aretract)s·(Pgauge + 1 bar)

A first-pass number, not a code check, certification, or approval. Read the method and its limits below. What this is and is not.

Calculation snapshot

Formula version 1.0.0

Ideal normalized free air per cycle	6.3225 NL/cycle
Ideal normalized free-air rate	113.8 NL/min
Cylinder swept volume per cycle	0.90321 L/cycle

Vfree = (Aextend + Aretract)s·(Pgauge + 1 bar)

Festo air-consumption reference: https://www.festo.com/gb/en/s/air-consumption/

This printout is a record of displayed inputs and deterministic formula output. It is not an approval, certification, or engineering conclusion.

Method

Estimate normalized free-air consumption for a double-acting cylinder bore, rod, stroke, operating pressure, and cycle rate.

Vfree = (Aextend + Aretract)s·(Pgauge + 1 bar)

When

Don’t

This is an ideal double-acting full-stroke consumption estimate normalized to 1 bar absolute. It excludes dead volume, cushioning, valve/line loss, leakage, regulator dynamics, air temperature, compressor duty, load motion, speed control, and component sizing.