Vacuum Cup Basics

Need help choosing a vacuum cup? Contact us at: 216-535-4848 or EOAT@EMIcompanies.net

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Vacuum Cup Tips, Hints & Comments
PIAB
silicone
PIAB silicone vacuum cups are among the best and longest lasting silicone cups available. PIAB’s specially compounded silicone keeps its flexibility longer than others. If your silicone cups are ‘cracking’ at the edges and leaking vacuum, try these for longer life.
PIAB
Dual Durometer
Polyurethane
These polyurethane vacuum cups are constructed in two different durometers, a sturdy and forgiving green bellows (60º durometer), and a large, yellow, flexible, sealing surface (30º durometer) that performs extremely well on uneven surfaces. 30º durometer makes these the most flexible sealing surface cups available. Note: The small cup shows a white filter disc, included with all PIAB Dual Durometer cups. Many robot users consider these the best performing polyurethane cup available.
Convum,
>S< type Viton®
Convum, Viton® gives you high temperature performance in a non-silicone, non-marking vacuum cup. This material works well for most applications; however, note the stiffer 65º durometer when using on textured or contoured surfaces.
SMC
Silicone & Polyurethane

SMC makes very nice quality, good performing vacuum cups, which are well suited for most robotic EOAT applications. SMC silicone cups have a softer, more flexible durometer (40°) than most silicone cups (50°~55°) which often provides a better seal on contoured or slightly textured parts. EMI makes ordering them easy. Our simple step-by-step ordering guide makes it easy for you to build the vacuum cup and mounting assembly that is suited to your application. Full size drawings assist you in getting the right size. And of course, our EOAT engineers are always available to provide engineering assitance too.
Senvex
Hithane
This new hybrid non-marking cup combines the high temperature and flexibility properties of silicone with the wear resistance and non-marking properties of polyurethane.
It contains no silicone so it is suitable to be used with parts that will be painted. Hithane is designed not to leave residue, mold release marks, or ghost marks on hot, injection molded plastic parts.
Senvex
Hithane 2.5 Bellows
This new hybrid non-marking cup combines the high temperature and flexibility properties of silicone with the wear resistance and non-marking properties of polyurethane.
It contains no silicone so it is suitable to be used with parts that will be painted. Hithane is designed not to leave residue, mold release marks, or ghost marks on hot, injection molded plastic parts.
ACLA
polyurethane
These hybrid, polyurethane cups are an excellent value. They get 6X more life than silicone and 2X more life than other polyurethane cups, yet the price premium is only about 1.3X more than other polyurethane cups. In addition, the maximum temperature threshold is slightly higher than other PU cups. They are non marking and contain no silicone so they are suitable to be used with parts that will be painted. With a shore rating of 72°, ACLA-PU is a little stiffer than silicone and some other polyurethanes, so keep this in mind if your part is texured or deeply contoured.
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