VFB40STMI

VFB40STMI | 43mm single-bellows Vacuforce suction cup — dark-grey metal-detectable silicone

Name: VFB40STMI
Brand: Vacuforce
Price: 13.29 USD
Availability: InStock

Vacuforce VFB40STMI is a 43mm single bellows suction cup made from dark-grey metal-detectable 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 metal-detectable formulation uses dispersed metal particles, giving it its darker colour; validate detection with the production system.

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

43mmCup Diameter

11.6kgLift at 24"Hg

26.5lbLift at 80% Vacuum

Metal-detectableDark grey silicone

Technical Specifications

Specification	Details
Cup Diameter	43mm / 1.693"
Cup Style	Single Bellows
Material	Metal-detectable silicone
Recommended Working Vacuum for Calculation	24"Hg / 80% vacuum
Metric Cup Area	14.5 cm²
Imperial Cup Area	2.25 in²
Effective Vacuum Pressure	11.76 PSI
Estimated Lifting Force at 24"Hg	11.6 kg / 26.5 lb
Temperature Range	-40°C to +250°C / -40°F to +482°F
Connection Type	Push-on / pull-off suction cup fitting connection where applicable
HTS Code	3926.90.9890
Material designation	-STMI
Cup colour	Dark grey
Vacuforce model	VFB40STMI

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.

14.5 cm²Metric Cup Area

2.25 in²Imperial Cup Area

11.6 kgMetric Lift at 80% Vacuum

26.5 lbImperial Lift at 80% Vacuum

Lifting Force Calculation

Calculation Step	Metric	Imperial
Diameter	43mm / 4.30cm	1.693"
Area	π x 2.15² = 14.5 cm²	π x 0.846² = 2.25 in²
Vacuum Level	80% vacuum	24"Hg / 80% vacuum
Effective Pressure	Area x 0.8	14.7 PSI x 0.8 = 11.76 PSI
Estimated Lifting Force	14.5 x 0.8 = 11.6 kg	2.25 × 11.76 = 26.5 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

Packaging and product handling with metal-detection procedures
Processing lines where lost-tool-component detection is required
Vacuum pick-and-place using suitable detector and product tests
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 — VFB40STMI

The -STMI material is dark-grey metal-detectable silicone. Metal particles in the formulation darken the original white/translucent colour; detection sensitivity must be validated with the installed detector. FDA compliance is not implied by the material code.

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 VFB40STMI mean, including its material suffix?

VFB40STMI identifies a Vacuforce 43mm single bellows cup. The material designation -STMI refers to dark-grey metal-detectable silicone. The -STMI material is dark-grey metal-detectable silicone. Metal particles in the formulation darken the original white/translucent colour; detection sensitivity must be validated with the installed detector. FDA compliance is not implied by the material code.

What colour is the VFB40STMI suction cup?

This model is supplied in dark grey.

What applications suit this single-bellows suction cup?

Typical uses include Packaging and product handling with metal-detection procedures, Processing lines where lost-tool-component detection is required. 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 43mm (1.693in). 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 VFB40STMI provide?

At the page calculation condition of approximately 24inHg (80% vacuum), the existing estimate is 11.6kg / 26.5lb 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.

Does metal-detectable silicone guarantee detection or FDA compliance?

No. Metal-detectable silicone contains detectable filler, but detection depends on detector settings, product effect, fragment size and process conditions. Confirm food-contact compliance separately for the exact supplied grade.

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.

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Tags: B40.20, 0101106, B40.20, 0101106, XP-B40S, 210.042.020.02R, GSV B40 20, 1419, B40-SIT, A-3150105S, PSB40-SIR, PSB40-SIT, VSAB40SI, VB40-S

Suitable for Food and Drug Applications

This Product is Metal Detectable

Buy Now Question about this product?

VFB40STMI

VFB40STMI | 43mm single-bellows Vacuforce suction cup — dark-grey metal-detectable silicone

Technical Specifications

Estimated Lifting Force at 24"Hg

Lifting Force Calculation

Typical Applications

Why Choose This Cup Style?

Material and colour — VFB40STMI

Cup selection and fit considerations

Frequently Asked Questions

Ships from Indianapolis, USA

Suitable for Food and Drug Applications

This Product is Metal Detectable

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Chicago, IL

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Indianapolis, USA

Ships from Indianapolis, USA