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VFB8ST

VFB8ST
VFB8ST
VFB8ST
VFB8ST
VFB8ST
VFB8ST
VFB8ST

VFB8ST | 8mm single-bellows Vacuforce suction cup — translucent white FDA-compliant silicone

Vacuforce VFB8ST is a 8mm single bellows suction cup made from translucent white FDA-compliant silicone. Its single-bellows profile is intended for industrial vacuum pick-and-place; selection depends on the part surface, cup geometry, available vacuum and mounting connection. The silicone grade is FDA-compliant as designated by Vacuforce; confirm suitability for the actual process.

This page includes calculated theoretical lifting force at 24"Hg / 80% vacuum using both metric and imperial engineering methods.

8mmCup Diameter
0.4kgLift at 24"Hg
0.9lbLift at 80% Vacuum
FDA siliconeTranslucent white silicone

Technical Specifications

SpecificationDetails
Cup Diameter8mm / 0.315"
Cup StyleSingle Bellows
MaterialFDA-compliant translucent white silicone
Recommended Working Vacuum for Calculation24"Hg / 80% vacuum
Metric Cup Area0.5 cm²
Imperial Cup Area0.08 in²
Effective Vacuum Pressure11.76 PSI
Estimated Lifting Force at 24"Hg0.4 kg / 0.9 lb
Temperature Range-40°C to +250°C / -40°F to +482°F
Connection TypePush-on / pull-off suction cup fitting connection where applicable
HTS Code3926.90.9890
Material designation-ST
Cup colourTranslucent white
Vacuforce modelVFB8ST

Estimated Lifting Force at 24"Hg

Lifting force is calculated from the suction cup diameter and adjusted to 80% vacuum. At sea level, atmospheric pressure is approximately 14.7 PSI. At 80% vacuum, the effective pressure is 14.7 x 0.8 = 11.76 PSI.

0.5 cm²Metric Cup Area
0.08 in²Imperial Cup Area
0.4 kgMetric Lift at 80% Vacuum
0.9 lbImperial Lift at 80% Vacuum

Lifting Force Calculation

Calculation StepMetricImperial
Diameter8mm / 0.80cm0.315"
Areaπ x 0.40² = 0.5 cm²π x 0.157² = 0.08 in²
Vacuum Level80% vacuum24"Hg / 80% vacuum
Effective PressureArea x 0.814.7 PSI x 0.8 = 11.76 PSI
Estimated Lifting Force0.5 x 0.8 = 0.4 kg0.08 × 11.76 = 0.9 lb

Important: Calculated lifting force is theoretical and should not be used as the final working load without applying the correct safety factor. Actual performance depends on surface condition, porosity, acceleration, cup orientation, leakage, vacuum level and application conditions.

Typical Applications

  • Food packaging and related automated handling
  • Handling of suitable consumer goods and formed parts
  • Repeated pick-and-place with compliant silicone contact surfaces
  • Height compensation over modest part variation

Why Choose This Cup Style?

Single Bellows suction cups are selected according to product shape, surface condition, required height compensation and cycle speed. Bellows styles provide more compliance and height compensation, while flat cups are generally preferred where low internal volume and fast release are important.

Material and colour — VFB8ST

The -ST material is translucent white FDA-compliant silicone. It shares the silicone material family with -S but has a different identifiable colour.

Cup selection and fit considerations

Compare cup diameter, bellows profile, lip geometry, mounting bore, material and vacuum performance when selecting a functional alternative. A similar appearance or nominal model size does not by itself guarantee interchangeability.

Frequently Asked Questions

What does VFB8ST mean, including its material suffix?

VFB8ST identifies a Vacuforce 8mm single bellows cup. The material designation -ST refers to translucent white FDA-compliant silicone. The -ST material is translucent white FDA-compliant silicone. It shares the silicone material family with -S but has a different identifiable colour.

What colour is the VFB8ST suction cup?

This model is supplied in translucent white.

What applications suit this single-bellows suction cup?

Typical uses include Food packaging and related automated handling, Handling of suitable consumer goods and formed parts. Confirm surface sealing, process conditions, cycle rate and handling orientation by testing.

What is the cup size and how should I select a fitting?

The listed cup diameter is 8mm (0.315in). Match the fitting to the Vacuforce cup series and mounting bore; a shared nominal size is not proof of mounting compatibility.

How much theoretical lifting force does VFB8ST provide?

At the page calculation condition of approximately 24inHg (80% vacuum), the existing estimate is 0.4kg / 0.9lb before any safety factor. This assumes ideal sealing and must not be treated as a certified working load.

Does a similarly shaped cup automatically fit another brand of tooling?

No. Compare actual lip diameter, bellows geometry, mounting interface, material and working conditions before selecting a fit-form-function alternative. Confirm performance by application testing.

Is this silicone suitable for food-contact applications?

Vacuforce identifies this silicone grade as FDA-compliant. Confirm the correct formulation, cleaning requirements and any additional end-user or local food-contact requirements for the complete installation.

Is a safety factor required for vertical lifting?

Yes. Use an appropriate engineering safety factor; Vacuforce normally recommends at least 8:1 for vertical lifting. Account for leakage, part acceleration, load orientation and surface condition, and validate safe working load in the application.

Link to Pneuforce Data Sheets 
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Tags: B8.20, 3150287S, B8.20, 3150287S, XP-B8S, 210.008.010.02R, 23.008.166.2, GSV B8 20, 1414, VB8-S, A-B8.20, A-3150287S, BSB008SI50, PSB8-SIR, PSB8-SIT, VSAB8SI, VB8-S

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