USD 17.66
20mm NBR bellows suction cup (1.5 convolutions) with M6 thread. Features 6mm height compensator, 12.9N retention force, and operates at -0.95 to 0 bar.
The Festo ESS-20-BN (Part Number: 189378) is a highly adaptable vacuum suction cup complete with an integrated M6 threaded connector. Engineered for precision automated handling, this 20mm diameter cup features a round, 1.5-convolution bellows shape constructed from NBR (Nitrile Rubber) with a Shore hardness of 50. Designed to compensate for workpiece height variations up to 6mm, it reliably grips curved or uneven surfaces with a minimum workpiece radius of 40mm. Delivering a secure 12.9 N retention force at a nominal operating pressure of -0.7 bar, the assembly is supported by a rugged nickel-plated brass and chrome-plated steel threaded plug, making it ideal for robust industrial vacuum systems operating between -10°C and 70°C.
| Parameter | Value |
|---|---|
| Suction Cup Diameter | 20 mm |
| Suction Cup Volume | 1.6 cm³ |
| Operating Pressure | -0.95 to 0 bar |
| Nominal Operating Pressure | -0.7 bar |
| Height Compensator | 6 mm |
| Min. Workpiece Radius | 40 mm |
| Retention Force | 12.9 N |
| Lateral Force | 9.5 N |
| Ambient Temperature | -10 °C to 70 °C |
| Vacuum Connection | M6 Thread |
| Suction Cup Material | NBR (Nitrile Rubber) |
| Material of Threaded Plug | Nickel-plated brass / Galvanized steel |
| Shore Hardness | 50 +/- 5 |
| Product Weight | 6.7 g |
Handles carton blanks and flexible packaging materials where surfaces may not be perfectly flat, ensuring reliable lifting without damage.
The 1.5 convolution bellows and 6mm height compensator absorb unevenness in packaging materials, preventing vacuum leaks and dropped items.
Integrates onto high-speed delta or SCARA robots to pick up small to medium plastic or metal components off a conveyor.
The 20mm NBR cup provides high wear resistance and a firm 9.5 N lateral force, ensuring parts do not slip during rapid horizontal acceleration.
Feeds curved or slightly contoured metal sheets (down to 40mm radius) into presses or forming machines.
The 40mm minimum workpiece radius adaptability allows the cup to conform to curved metallic surfaces, establishing a secure vacuum seal at -0.95 bar.
