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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
189391
Vacuum suction cup ESS-50-BU
The Festo 189391 is a round protective bellows 1.5-fold industrial component featuring a 50 mm suction cup diameter, 11 mm height compensation, and a nominal width of 3 mm with an upward connection position. Operating within a pressure range of -95 kPa to 0 kPa and a nominal operating pressure of -70 kPa, this 24.7 g part achieves a holding force of 72.6 N and a lateral force of 47 N at nominal pressure. It offers an ambient temperature range of -20 °C to 60 °C, a suction cup volume of 14.23 cm³, and mounts via the vacuum connection in any position. Submit the exact part number, quantity, and application requirements for a quote.
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Request a QuoteWhy no listed price?
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 189391
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 189391.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Suction cup height compensation
- 11 mm
- Min. workpiece radius
- 150 mm
- Nominal width
- 3 mm
- Suction cup diameter
- 50 mm
- Suction cup volume
- 14.23 cm³
- Connection position
- up
- Mounting position
- Any
- Classication of suction cup holder
- Size 4
- Suction cup shape
- round protective bellows 1.5-fold
- Operating pressure
- -95 kPa...0 kPa | -0.95 bar...0 bar | -13.775 psi...0 psi
- Nominal operating pressure
- -70 kPa | -0.7 bar | -10.15 psi
- Operating medium
- Atmospheric air based on ISO 8573-1:2010 [7:-:-]
- Corrosion resistance class (CRC)
- 1 - Low corrosion stress
- LABS (PWIS) conformity
- VDMA24364 Zone III
- For use in the food industry
- See supplementary material information
- Ambient temperature
- -20 °C...60 °C
- Holding force at nominal operating pressure
- 72.6 N
- Lateral force at nominal operating pressure
- 47 N
- Product weight
- 24.7 g
- Type of mounting
- Via vacuum connection
- Vacuum connection
- M6
- Color
- Blue
- Shore hardness
- 60 +/-5
- Material of screwed plug
- Wrought aluminum alloy, nickel-plated | Brass, nickel-plated
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 189391. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.