Pneumatic Suction Cups

Pneumatic suction cups are also known as vacuum cups, vacuum pads and suckers and they can be attached to various surfaces to provide a safe and secure way to move and hold products. Suction cups mould to the shape of the object they are handling without causing any damage. Suction cups are manufactured from a range of materials and perform well in many environments from light duty to heavy industrial.

A suction cup works by having less air pressure on one side of the cup than the other side of the suction cup. When pressure is put onto the suction cup it forces air out of the area, creating a vacuum. The vacuum created enables you to move and lift any product. Suction cups will not work when there is a low atmospheric pressure. Before use check that the suction cup surface is clean and free from dirt or grit to ensure a maximum grip.

Special grippers are sometimes used in tasks which suction cups cannot be used to handle delicate and brittle workpieces and are referred to as Bernoulli effect grippers.

How do pneumatic suction cups work?

When a suction cup contacts the surface of an object, it activates a vacuum generator (such as a blower, vacuum ejector or vacuum pump) that draws air from the space between the cup and the item. As soon as the atmospheric pressure is greater than the pressure between the object and the cup, atmospheric pressure presses the suction cup against the item, holding it firmly.

What is holding force?

Holding force is the amount of force required to move an object. This is measured in Newtons (N) and when looking for the right suction cup, ensure you choose one that will lift, move the weight and size of the object.

What are suction cups made of?

Suction cups are made from various materials like:

  • Silicone
  • Nitrile
  • Polyurethane (PUR)
  • Fluororubber
  • Silicone rubber

Suction Cup Types Available

  • Bellows - ideal for concave and convex shapes. Require minimum pressure. Work on slanted surfaces. Absorbs any alignment problems.
  • Deep - excellent with curved objects. Enhanced grip.
  • Flat - suitable for glass, metal sheets and cardboard.

Pneumatic suction cups are available in a range of shapes, sizes, diameters and designs and will handle most products. RS Components have a great range of pneumatic products including suction cups and grippers suitable for every industry and application.


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Description Price Manufacturer Series Pad Type Pad Diameter Pad Material Holding Force With Buffer Vacuum Entry Direction Connection Type Threaded Connection Size Tube Outside Diameter Material
RS Stock No. 703-6258
Mfr. Part No.1820415039
HK$105.79
Each
units
BSG Bellows 20mm Acrylonitrile Butadiene Rubber 5.7N - - Male Thread 1/8 in - -
RS Stock No. 227-6782
Mfr. Part No.ZP08BS
BrandSMC
HK$71.36
Each
units
ZP Bellows 8mm Silicon Rubber - - - - - - -
RS Stock No. 725-333
Mfr. Part No.ZPR25CNK10-08-A10
BrandSMC
HK$624.72
Each
units
ZPR Flat with Rib 25mm NBR - Yes Lateral Male Thread M10 x 1 - -
RS Stock No. 227-3929
Mfr. Part No.ZP16BS
BrandSMC
HK$98.35
Each
units
ZP Bellows 16mm Silicon Rubber - - - - - - -
RS Stock No. 701-3494
Mfr. Part No.ZPT20UN-B01
BrandSMC
HK$117.62
Each
units
ZPT Flat 20mm NBR - - Vertical Female Thread 1/8 in - -
RS Stock No. 827-6589
Mfr. Part No.ZP10US
BrandSMC
HK$41.83
Each
units
ZP Flat 10mm Silicon Rubber - - - - - - -
RS Stock No. 703-6249
Mfr. Part No.1820415037
HK$122.05
Each
units
BSG Bellows 20mm Fluoromethyl Silicone 5.7N - - Male Thread 1/8 in - -
RS Stock No. 227-3957
Mfr. Part No.ZP32BS
BrandSMC
HK$122.31
Each
units
ZP Bellows 32mm Silicon Rubber - - - - - - -
RS Stock No. 227-3979
Mfr. Part No.ZP50BS
BrandSMC
HK$157.16
Each
units
ZP Bellows 50mm Silicon Rubber - - - - - - -
RS Stock No. 202-2704
Mfr. Part No.ESF-4A
BrandFesto
HK$475.32
Each
units
ESF - - - - - - - - - -
RS Stock No. 203-8358
Mfr. Part No.ESS-40-GT-G1/4
BrandFesto
HK$225.06
Each
units
ESS - 40mm - 64N - - - - - -
RS Stock No. 202-2907
Mfr. Part No.VASB-15-1/8-PUR-B
BrandFesto
HK$85.51
Each
units
VASB - 15mm PUR 8.5N - - - - - -
RS Stock No. 203-8359
Mfr. Part No.ESS-80-SU
BrandFesto
HK$470.43
Each
units
ESS Flat 80mm PUR 309.7N - - - - - -
RS Stock No. 203-8276
Mfr. Part No.ESS-50-BS
BrandFesto
HK$197.13
Each
units
ESS Bellows 50mm Silicon 72.6N - - - - - -
RS Stock No. 204-0076
Mfr. Part No.OGVM-20-A-N-G14F
BrandFesto
HK$261.59
Each
units
OGVM Bellows 20mm NBR 15N - - - - - -
RS Stock No. 203-8288
Mfr. Part No.ESS-50-SS
BrandFesto
HK$159.85
Each
units
ESS Flat 50mm Silicon 105.8N - - - - - -
RS Stock No. 212-9261
Mfr. Part No.M/58304/01
HK$155.92
Each
units
M/58300 Flat 15mm NBR 12N - - - - - -
RS Stock No. 203-8362
Mfr. Part No.ESS-30-EF
BrandFesto
HK$262.34
Each
units
ESS - 30mm - 37.2N - - - - - -
RS Stock No. 203-8381
Mfr. Part No.ESS-30-EN
BrandFesto
HK$113.34
Each
units
ESS - 30mm NBR 37.2N - - - - - -
RS Stock No. 701-3498
Mfr. Part No.ZPT32UN-B01
BrandSMC
HK$122.94
Each
units
ZPT Flat 32mm NBR - - Vertical Female Thread 1/8 in - -