FESTO VASB-40-1-4-pur-b Vacuum Suction Cup

VASB-40-1-4-pur-b

VASB：Bellows-type vacuum suction cup (bellows design for height deviation compensation)

40：Suction cup diameter 40 mm

1：Number of bellows folds 1-fold

4：Port specification G1/4 internal thread

pur：Suction cup material PUR polyurethane, wear-resistant and tear-resistant, suitable for handling smooth or slightly rough workpieces

b：Base type Type-B, standard metal threaded base

Parâmetros principais

Suction cup diameter: 40 milímetros

Bellows folds: 1-fold

Fio de conexão: G1/4 internal thread

Material: PUR polyurethane

Theoretical suction area: aprox.. 1257 mm²

Maximum lifting force (-0.06 MPa vacuum): aprox.. 75 N

Temperatura operacional: -20 … +80 ℃

Mídia aplicável: Vácuo, ar comprimido

Características: 1-fold bellows, curso curto, alta rigidez, suitable for flat workpieces, wear-resistant, low-marking performance

Cenários típicos de aplicação

Handling metal sheets, plastic parts, PCB, caixas, laminated panels, glass and other flat workpieces; automated manipulators, palletizing, sorting and feeding stations.

Instalação & Componentes correspondentes

Connect directly to vacuum fittings / vacuum generator via G1/4 internal thread;
Compatível com FESTA OVEM, VAD series vacuum generators;
Vacuum filter is recommended to prevent debris from entering the vacuum generator;
Avoid contact with strong solvents and strong acids/alkalis for PUR material, otherwise accelerated aging will occur.

Domestic Alternative Reference

Specification matching: 40 milímetros, 1-fold bellows suction cup, G1/4 internal thread, polyurethane material

Modelos alternativos: SMC ZP40BS-B04; domestic YIHEDA WEM31-40-1-G1/4 and other structurally equivalent suction cups.

Wear-part Reminder

The PUR suction cup is a consumable part. Frequent use may cause lip cracking and deformation. Replace it once air leakage or workpiece dropping occurs.

VASB-40-1-4-PUR-B Vacuum Suction Cup｜Complete Application Scenarios

Recursos principais: 40 milímetros, 1-fold bellows (short compensation stroke), wear-resistant PUR polyurethane, G1/4 internal thread; suitable for flat / slightly undulating workpieces, small vertical height compensation, not for large-offset or large-curvature curved surfaces.

✅ Recommended Industries & Stations

1) Componentes Automotivos

Loading/unloading of stamped sheet metal, galvanized sheets, painted plastic interior parts, lamp housings and decorative covers

Robot handling, transferring and positioning picking; not applicable for deep-curved workpieces (only 1-fold bellows)

Vantagens: PUR is wear-resistant and hardly leaves indentations on painted surfaces

2) 3C Eletrônica / Lithium-battery Industry

Picking of PCB boards, laminated plastic panels, battery covers, aluminum-plastic films and flat module housings

Linhas de montagem, transferring and test stations; low zinc-copper precipitation, available for F1a battery-line conditions

Suitable for precision workpieces vulnerable to scratching

3) Embalagem & Logística

Picking of hard cartons, color boxes, plastic packaging boxes, hard plastic pallets and laminated panels

Máquinas de embalagem, sorting manipulators and small-scale palletizing; not for soft films or wrinkled flexible bags (insufficient stroke of 1-fold bellows)

4) Automação Industrial Geral

Handling of injection-molded parts, acrylic sheets, tempered glass, aluminum plates, steel plates and ceramic tiles

Machine-tool loading/unloading, robot pick-and-place and transfer mechanisms; 1-fold bellows compensates minor height errors without buffer support.

5) Equipment Matching

Matched with: FESTO OVEM/VAD vacuum generators, vacuum filters, G1/4 vacuum fittings; robot end-of-arm suction cup modules, gantry manipulators.

✅ Suitable Workpiece Surfaces

Smooth flat surfaces, slightly rough flat surfaces
Minor height variation (short compensation stroke, only a few millimeters)
Surfaces prone to scratching requiring soft contact
Medium-weight workpieces, theoretical suction force of single cup: 60-75 N (@-0.06 MPa)

❌ Cenários inadequados (Seleção para evitar armadilhas)

Large-curvature curved surfaces or heavily uneven workpieces: Only one bellows fold provides limited deformation, poor sealing and frequent dropping; select 2-3-fold VASB models instead.
Ultra-thin soft films, thin paper, wrinkled flexible bags: Risk of suction-wrinkling or suction-penetration.
Environment with strong solvents, strong acids or alkalis: PUR will swell and age; switch to NBR or SI silicone versions.
Long-term temperature above 80 ℃: Accelerated aging of polyurethane; silicone suction cup is recommended.
Porous breathable workpieces (espuma, thick paperboard): Heavy vacuum leakage leads to insufficient suction force.

💡 Engineering Selection Tips

For workpieces with large height offset / floating requirement: Add suction cup buffer support or switch to multi-fold VASB-40-2-4-PUR-B.

Surface indentation prevention: PUR is optimal for this size; select -si (silicone) for high-temperature conditions; select -nbr (NBR) for oil-polluted conditions.

FESTO VASB-40-1-4-PUR-B Suction Cup Selection Checklist

Propósito: BOM review, project selection confirmation, on-site troubleshooting. Check item-by-item; replace suction cup model / accessories if any item fails.

Basic Suction Cup Verification

Check Item	Parameter of This Model	Engineering Judgment
Suction cup type	1‑fold bellows suction cup VASB	□ OK □ Not OK, 2‑fold /3‑fold bellows required
Suction cup diameter	40 milímetros	□ OK □ Not OK, change diameter
Fio de conexão	G1/4 internal thread	□ OK □ Not OK, change fitting / select external‑thread model
Suction cup material	PUR polyurethane	□ OK □ Not OK, switch to SI silicone / NBR nitrile rubber
Theoretical suction force (@‑0.06 MPa)	≈75 N	Safety factor calculation: Load × ≥2.5 safety factor
Bellows compensation stroke	Curto (only a few millimeters)	□ Small workpiece height variation □ Large height offset → buffer support or multi‑fold suction cup required

✔ Suction-force calculation reference: Actual allowable load ＜ Theoretical suction force ÷ Safety factor; adopt safety factor 2.5~4 for general handling, acima 4 for high-speed handling.

Workpiece Condition Verification (All items shall be satisfied for this suction cup)
Workpiece surface: □ Flat / slightly undulating; Large-curvature curved surfaces & heavily uneven surfaces are prohibited
Workpiece material: □ Sheet metal, plástico, PCB, vidro, ceramic tile, caixa dura; Espuma porosa, soft films and wrinkled flexible bags are prohibited
Surface protection: □ Indentation-free requirement (PUR applicable); □ Oil contamination on workpiece; □ Solvent / acid-alkali contact
Workpiece temperature: Operating temperature -20~+80 ℃; PUR is not recommended for long-term temperature above 80 ℃
Workpiece weight: Single-cup load within safe range; Increase suction-cup quantity if overloaded

III. Working-condition Verification

No strong solvent or strong acid-alkali in environment (PUR swells and cracks under solvent exposure)

No long-term temperature above 80 ℃; select -SI silicone version for high-temperature conditions

Dust-prone conditions: Vacuum filter shall be equipped to protect vacuum generator

Heavy oil-polluted conditions: NBR-material suction cup is preferred

BOM of Matching Components

Componente	Modelo recomendado / Especificação	Observação
Vacuum generator	FESTO VAD / OVEM series	Select according to suction‑response time
Vacuum filter	VAF series	Obrigatório, prevent debris from entering generator
Fitting	G1/4 male‑thread adapter	Match suction‑cup G1/4 internal thread
Buffer support	If height offset exists	Mandatory when bellows stroke is insufficient
Vacuum pressure switch	VPE/VAS series	Vacuum monitoring, workpiece‑drop alarm

Prohibited Application Scenarios (Do not use VASB-40-1-4-PUR-B if any item applies)

Large-curvature workpiece surfaces, heavy height offset

Handling soft thin films, papel, flexible bags

Porous breathable workpieces (espuma, loose paperboard)

Long-term exposure to acetone, thinners and other strong solvents

Long-term ambient temperature above 80 ℃

Large workpiece height offset without buffer support

On-site Operation & Dicas de manutenção
PUR is a consumable. Replace promptly when lip cracking, deformação, air leakage or frequent workpiece dropping occurs.
Do not over-tighten during installation to avoid damage to suction-cup base thread.
Regularly clean dust and chips on suction-cup lip.
Avoid hard mechanical impact on suction cup to prevent permanent lip deformation.

VII. Quick-reference Alternative Models

Larger compensation stroke: VASB-40-2-4-PUR-B (2-fold bellows)
High-temperature conditions: VASB-40-1-4-SI-B silicone version
Oil-polluted conditions: VASB-40-1-4-NBR-B nitrile-rubber version
Alternativa doméstica: 40 milímetros, 1-fold bellows, G1/4 internal thread, PUR-polyurethane suction cup

FESTO 40 mm Suction Cup Alternative Models (Against VASB-40-1-4-PUR-B)

Modelo de referência: VASB-40-1-4-PUR-B｜40 mm, 1-fold bellows, G1/4 internal thread, PUR polyurethane, B-type metal base

VASB-series (Bellows suction cups, 40 milímetros, G1/4-B base, direct replacement without changing fittings)

Modelo	Bellows Folds	Material	Principais recursos	Aplicativo
VASB‑40‑1‑4‑NBR‑B	1‑fold	NBR nitrile rubber	Oil‑resistant, wear‑resistant, preto; ‑20~80 ℃	Oil‑polluted sheet metal & peças estampadas; Not for high‑gloss surfaces sensitive to indentation
VASB‑40‑1‑4‑SI‑B	1‑fold	SI silicone	High‑temperature resistant ‑40~200 ℃, food‑grade, branco	High‑temperature workpieces, embalagens de alimentos; Replace for fast‑aging PUR; Prone to leave marks
VASB‑40‑2‑4‑PUR‑B	2‑fold	PUR polyurethane	Enhanced height compensation with two bellows folds	Workpieces with height offset or slight curvature; First‑choice for insufficient 1‑fold‑stroke cases
VASB‑40‑2‑4‑NBR‑B	2‑fold	NBR	Oil‑resistance plus large compensation stroke	Oil‑polluted workpieces with height offset
VASB‑40‑2‑4‑SI‑B	2‑fold	E	High‑temperature resistance plus large compensation stroke	High‑temperature and slightly‑curved workpieces

Observação: VASB = bellows suction cup; B = metal threaded base; digit 1=1-fold, digit 2=2-fold; digit 4=G1/4 internal-thread port.

VAS-series (Flat-suction-cup, no bellows, 40 mm G1/4-B)

For perfectly flat workpieces, almost zero height compensation, alta rigidez, cannot compensate height offset.

VAS-40-1-4-PUR-B: PUR, flat non-bellows type
VAS-40-1-4-NBR-B: NBR oil-resistant flat type
VAS-40-1-4-SI-B: Silicone high-temperature-resistant flat type

Not for workpieces with height offset or slight curvature; Only for flat steel sheets and glass panels.

III. Other FESTO-series Alternatives (Different structure; fitting / bracket modification required)

ESS-40-BS: Modular ESS suction cup with M6 thread; replaceable suction cup lip for robot end-of-arm modules, baixo custo de manutenção, reusable base with fast-swap suction cup body.
VASBT: Bellows suction cup with protective sleeve; for workpieces with chips and burrs, prevents bellows from being cut by chips; preferred for stamping lines.
Quick-decision Selection Guide
Heavy oil contamination only: Select VASB-40-1-4-NBR-B
Temperature＞80 ℃ / food-industry application: Select VASB-40-1-4-SI-B
Workpiece height offset / slight curvature & frequent dropping: Upgrade to 2-fold VASB-40-2-4-PUR-B
Both oil-pollution and height offset: VASB-40-2-4-NBR-B
Perfectly flat workpiece without height offset: Adopt VAS flat-cup series
Heavy-chip production line with easy-to-damage suction cups: VASBT sleeve-protected version
Alternativas entre marcas (40 mm bellows suction cup, G1/4 internal thread)

SMC

ZP40BS-B04: 1-fold bellows, polyurethane, G1/4 internal thread, equivalent to VASB-40-1-4-PUR-B

ZP40BN-B04: NBR oil-resistant version

Domestic YIHEDA

WEM31-40-1-G1/4-PUR: 1-fold bellows, G1/4 internal-thread polyurethane

WEM31-40-2-G1/4-PUR: 2-fold bellows version

Lembretes de armadilhas
2-fold suction cups have larger overall height; verify mechanical-envelope space to avoid hard collision.
Silicone SI leaves marks more easily than PUR on high-gloss surfaces; PUR is preferred for appearance-critical parts.
NBR swells under ketone-solvent exposure.
VAS flat suction cups have zero bellows compensation; minor workpiece unevenness will cause air leakage and workpiece dropping.