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Air demand

Pneumatic Air Consumption Calculator

Estimate cylinder air demand from bore, rod diameter, stroke length, action type, pressure, and cycles per minute before checking compressor capacity.

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Air demand

Run the calculation

Estimate cylinder air demand from bore, rod diameter, stroke length, action type, pressure, and cycles per minute before checking compressor capacity.

Engineering inputsAir Consumption Calculator

Enter the known application values. Outputs update instantly as units or assumptions change.

Action type
Pressure unit
Output flow unit
Use these values for preliminary sizing before final datasheet review.

Engineering visual

Air Consumption Calculator calculation map

The sketch links airflow into the cap and rod chambers with piston travel, stroke distance, velocity, and elapsed cycle time.

Air Consumption Calculator calculation mapThe sketch links airflow into the cap and rod chambers with piston travel, stroke distance, velocity, and elapsed cycle time.AIRFLOW QSTROKE SVELOCITY vSTARTPOSITION AT t
  1. 01Bore diameter
  2. 02Calculate and compare
  3. 03Cylinder air per cycle
Push air / cycle
Pull air / cycle
Total / cycle
Tube dead volume / cycle

Calculation reference

What this tool checks.

The calculator applies the absolute pressure ratio to cylinder swept volume and optional tube dead volume, then multiplies both by actuator quantity and cycle rate.

Inputs

  • Bore diameter
  • Rod diameter
  • Stroke length
  • Action type
  • Pressure
  • Cycles per minute
  • Actuator quantity
  • Tube inside diameter
  • Tube length per actuator

Outputs

  • Cylinder air per cycle
  • Tube dead volume per cycle
  • Cylinder bank air per minute
  • Total system air per minute
  • m3/h
  • SCFM

Engineering guide

Use the result with the right context.

Calculate air consumption calculator from application data and interpret the result for preliminary pneumatic engineering review.

Calculation workflow

  1. Enter the known application values, including Bore diameter, Rod diameter, Stroke length.

  2. Run the calculation using one consistent set of units and reference conditions.

  3. Review Cylinder air per cycle, Tube dead volume per cycle, Cylinder bank air per minute, then compare the result with the component datasheet and application margin.

Assumptions and limits

  • Use gauge pressure at the actuator and account separately for downstream back pressure.

  • Confirm mounting, side load, cushioning, duty cycle, and catalog limits before final cylinder selection.

FAQ

Common review questions.

01Tool noteWhat inputs affect pneumatic air consumption most?

Bore size, stroke length, operating pressure, and cycle rate usually have the largest effect on calculated air demand.

02Tool noteIs this calculation enough for compressor sizing?

Use it as an early estimate, then account for simultaneous actuators, leakage, reserve capacity, tubing volume, and machine duty cycle.

03Tool noteWhat should I verify after using the Air Consumption Calculator?

Check the entered units and reference conditions, then compare the calculated outputs with manufacturer ratings, application safety margins, transient loads, installation losses, and measured machine performance.