Festo ESS-50-SU Vacuum Suction Cup

Technical Overview

The Festo 189310 (model ESS-50-SU) is an industrial-grade, round and flat vacuum suction cup designed for precise handling of workpieces in automated pneumatic systems. Manufactured from highly durable polyurethane (PUR) with a Shore hardness of 60 +/- 5, this 50mm diameter cup integrates a top-mounted M6 threaded port for rapid installation on robotic arms or lifting arrays. Engineered for robust gripping strength, it operates seamlessly within a pressure range of -0.95 bar to 0 bar (-95 kPa to 0 kPa), delivering an effective holding force of 105.8 N and a lateral force of 130 N at a nominal operating pressure of -0.7 bar. Compliant with VDMA24364 zone III LABS (PWIS) standards and suitable for operating temperatures from -20 °C to 60 °C, the ESS-50-SU ensures secure, low-wear performance in high-speed factory automation environments.

Key Features

50mm diameter round, flat profile optimized for secure gripping of flat and slightly curved surfaces
Wear-resistant Polyurethane (PUR) construction with a Shore hardness of 60 +/- 5
Integrated M6 threaded top connection allows for robust and straightforward mounting
Operates across a comprehensive pressure range from -0.95 bar to 0 bar (-95 kPa to 0 kPa)
Delivers a dependable 105.8 N holding force and 130 N lateral force at nominal pressure
Broad ambient temperature resilience from -20 °C to +60 °C for diverse industrial settings
Complies with VDMA24364 zone III LABS (PWIS) conformity standards for paint-wetting impairment substances

Technical Specification Matrix

Parameter	Value
Suction Cup Diameter	50 mm
Vacuum Connection	M6 Thread (Top Mounted)
Suction Cup Volume	2.387 cm³
Minimum Workpiece Radius	330 mm
Operating Pressure Range	-0.95 bar to 0 bar (-95 kPa to 0 kPa)
Holding Force (at -0.7 bar)	105.8 N
Lateral Force (at -0.7 bar)	130 N
Material	Polyurethane (PUR)
Shore Hardness	60 +/- 5
Ambient Temperature Range	-20 °C to 60 °C
Corrosion Resistance Class (CRC)	1 - Low corrosion stress

Industrial Applications

1. Sheet Metal Handling in Automotive Manufacturing

Integrates with robotic end-of-arm tooling to securely lift and transfer flat or mildly curved sheet metal panels during pressing and assembly line stages without scratching the material.

Problem Solved

Prevents slippage and surface marring of heavy metallic sheets through high lateral force resistance (130 N) and adaptive polyurethane construction capable of gripping 330mm minimum radius curves.

End-of-arm toolingSheet metal handlingRobotic vacuum grippingLateral force resistance

2. Cardboard Packaging and Carton Palletizing

Utilized in high-speed packaging automation to securely pick and place corrugated boxes and cartons onto pallets using industrial vacuum manifold arms.

Problem Solved

Combats the abrasive wear commonly caused by porous cardboard materials, maintaining strong vacuum pressure (-0.95 bar max) while preventing dropping during rapid robotic transfer.

Vacuum manifoldPackaging automationCorrugated carton palletizingHigh-cycle pick and place

3. Glass Pane Manipulation in Window Assembly

Forms part of a synchronized vacuum lifting array capable of hoisting and positioning heavy, non-porous glass panels securely for framing and sealing.

Problem Solved

Ensures delicate but unyielding gripping of perfectly flat glass panels, utilizing the 105.8 N holding force and 50mm flat profile to prevent vertical shifting without leaving permanent marks.

Non-porous material handlingGlass lifting arrayShear force resistanceVacuum lifting system