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Cup diameter

Vacuum Cup Size Calculator

Calculate the minimum suction cup diameter needed for a load using vacuum level, cup count, acceleration allowance, and safety factor.

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Cup diameter

Run the calculation

Calculate the minimum suction cup diameter needed for a load using vacuum level, cup count, acceleration allowance, and safety factor.

Engineering inputsVacuum Cup Size Calculator

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

Use these values for preliminary sizing before final datasheet review.

Engineering visual

Vacuum Cup Size Calculator calculation map

Atmospheric pressure above the part and lower pressure inside the cup create the holding force; payload and acceleration act in the opposite direction.

Vacuum Cup Size Calculator calculation mapAtmospheric pressure above the part and lower pressure inside the cup create the holding force; payload and acceleration act in the opposite direction.VACUUM LINE PvacHOLDING FORCEPAYLOAD + aATMOSPHERIC PRESSURE PatmPART SURFACE
  1. 01Load mass
  2. 02Calculate and compare
  3. 03Minimum cup diameter
Minimum cup diameter
Suggested next diameter
Required force per cup
Total holding force

Calculation reference

What this tool checks.

The required force per cup includes load, acceleration allowance, cup count, and safety factor.

Inputs

  • Load mass
  • Vacuum level
  • Number of cups
  • Acceleration allowance
  • Safety factor

Outputs

  • Minimum cup diameter
  • Required force per cup
  • Suggested next diameter
  • Total required holding force

Engineering guide

Use the result with the right context.

Calculate vacuum cup size calculator from application data and interpret the result for preliminary pneumatic engineering review.

Calculation workflow

  1. Enter the known application values, including Load mass, Vacuum level, Number of cups.

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

  3. Review Minimum cup diameter, Required force per cup, Suggested next diameter, then compare the result with the component datasheet and application margin.

Assumptions and limits

  • Use absolute pressure for evacuation and leakage calculations, and pressure differential for holding-force calculations.

  • Verify surface condition, cup material, acceleration, leakage, load orientation, and loss-of-vacuum behavior on the machine.

FAQ

Common review questions.

01Tool noteWhy include acceleration allowance?

Moving, lifting, or stopping a part adds dynamic load beyond static weight. Acceleration allowance helps avoid selecting a cup that only works at rest.

02Tool noteShould cup diameter be rounded up?

Yes. Use the next available catalog diameter and verify material, shape, surface texture, and generator capacity.

03Tool noteWhat should I verify after using the Vacuum Cup Size 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.