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Vacuum Cups and Accessories

Vacuum Cups

EXAIR vacuum cups are vinyl. They are ideal for general purpose applications and provide excellent resistance to wear. The Durometer rating (used to indicate the flexibility and stiffness of the cup) is A50. Temperature range is 0°C to 52°C (32°F to 125°F).

Choosing a Suitable Vacuum Cup

To select a vacuum cup for your application, you need to know:

  • The weight of the item being lifted.
  • If the item to be lifted is porous or non-porous.
  • The safety factor.

Accessories Needed To Build Your Vacuum System

EXAIR offers a variety of mufflers, tubing, check valves, and fittings that make it easy to build a vacuum system best suited to your vacuum application.
When using E-Vac vacuum generators, it is important to use a source of clean, dry compressed air that will keep them operating at their peak performance. Automatic drain filter separators keep the compressed air free of contaminants and moisture; oil removal filters remove oil particulates that are common to many compressed air systems; pressure regulators, shutoff valves, compressed air hose, and solenoid valves (to electrically turn the compressed air on and off).

Mufflers

Optional silencing mufflers are available that permit maximum exhaust of the E-Vac unit so cycle speed is not reduced. The Standard Muffler (for use with In-Line E-Vacs only) has a closed end and is suitable for applications that are free of dust and debris. The Straight Through Muffler is recommended where particulates are present since it will not accumulate debris that can erode performance. Straight Through Mufflers offer the best sound level reduction (up to 26 dBA).

Mufflers – Standard
Model Description Thread
900800 Standard Muffler 1/4 MNPT
900801 Standard Muffler 3/8 MNPT
900802 Standard Muffler 1/2 MNPT
Mufflers – Straight Through
Model Description Thread
890001 Straight Through 1/4 MNPS
890002 Straight Through 3/8 MNPS
890003 Straight Through 1/2 MNPS
890004 Straight Through 3/4 MNPS
890005 Straight Through 1 MNPS

Check Valves

A vacuum check valve is available to hold the vacuum in case of compressed air loss. E-Vac vacuum generators that are used without a check valve will release the load if there is a significant drop in compressed air pressure or the supply of compressed air is lost.

Check Valves
Model Description Thread
900804 Check Valve 1/4 NPTF
900805 Check Valve 3/8 NPTF
900806 Check Valve 1/2 NPTF

Fittings and Tubing

The vacuum port of the E-Vac has an NPT thread (a vacuum cup can be threaded directly into it). For vacuum cups that are remotely located, push-in connector fittings (most have global threads for use with NPT and BSP), or hose barb fittings can be installed on the E-Vac and the vacuum cup. Polyurethane vacuum tubing is available (10’, 20’, 30’, 40’ and 50’ lengths) to connect them. For best performance, the length of the tubing should be minimised to achieve the best attach and release times.

Push-In Connectors
Model Description
900773 1/4 Tube X 1/8 FNPT
900774 1/4 Tube x 1/8 Male Global Thread
900775 1/4 Tube x 1/4 Male Global Thread 1/4 Tube x 1/4 Male Global Thread 1/4 Tube x 1/4 Male Global Thread 1/4 Tube x 1/4 Male Global Thread
900776 1/4 Tube x 3/8 Male Global Thread
900777 3/8 Tube x 1/8 Male Global Thread 3/8 Tube x 1/8 Male Global Thread 3/8 Tube x 1/8 Male Global Thread 3/8 Tube x 1/8 Male Global Thread
900778 3/8 Tube x 1/4 Male Global Thread
900779 3/8 Tube x 3/8 Male Global Thread 3/8 Tube x 3/8 Male Global Thread 3/8 Tube x 3/8 Male Global Thread 3/8 Tube x 3/8 Male Global Thread
900780 3/8 Tube x 1/2 Male Global Thread
Push-In Swivel Elbow Connectors
Model Description
900781 1/4 Tube x 1/8 Male Global Thread 1/4 Tube x 1/8 Male Global Thread 1/4 Tube x 1/8 Male Global Thread 1/4 Tube x 1/8 Male Global Thread
900782 1/4 Tube x 1/4 Male Global Thread
900783 1/4 Tube x 3/8 Male Global Thread 1/4 Tube x 3/8 Male Global Thread 1/4 Tube x 3/8 Male Global Thread 1/4 Tube x 3/8 Male Global Thread
900784 3/8 Tube x 1/8 Male Global Thread
900785 3/8 Tube x 1/4 Male Global Thread 3/8 Tube x 1/4 Male Global Thread 3/8 Tube x 1/4 Male Global Thread
900786 3/8 Tube x 3/8 Male Global Thread
900787 3/8 Tube x 1/2 Male Global Thread 3/8 Tube x 1/2 Male Global Thread 3/8 Tube x 1/2 Male Global Thread
Push-In Swivel Branch Tee Connector
Model Description
900788 1/4 Tube x 1/8 Male Global Thread 1/4 Tube x 1/8 Male Global Thread 1/4 Tube x 1/8 Male Global Thread
900789 1/4 Tube x 1/4 Male Global Thread
900790 3/8 Tube x 1/4 Male Global Thread 3/8 Tube x 1/4 Male Global Thread 3/8 Tube x 1/4 Male Global Thread
900791 3/8 Tube x 3/8 Male Global Thread
Push-In Bulkhead Connector
Model Description
900792 Female Union – 1/4 Tube x 1/4 Tube
900793 Female Union – 3/8 Tube x 3/8 Tube
900809 Female Union – 1/4 Tube x 1/4 NPT
900810 Female Union – 3/8 Tube x 1/4 NPT
Vacuum Tubing
Tubing lengths are 10′, 20′, 30′, 40′, and 50′. Select the hose model number (diameter) and indicate the length with a dash. Example: A model 900795-20 is 1/4″ tubing x 20′ (6.1m) long.
Model Description
900795- 1/4″ OD Polyurethane Tubing
900796- 3/8″ OD Polyurethane Tubing
Mounting Clip
Model Description
900798 Mounting Clip with Strap
Hose Barbs
Model Description
900969 1/4 MNPT x 1/4 Hose Barb
900970 1/4 MNPT x 3/8 Hose Barb 1/4 MNPT x 3/8 Hose Barb
900971 1/4 MNPT x 1/2 Hose Barb 1/4 MNPT x 1/2 Hose Barb
900972 1/2 MNPT x 1/4 Hose Barb 1/2 MNPT x 1/4 Hose Barb
900973 1/2 MNPT x 3/8 Hose Barb 1/2 MNPT x 3/8 Hose Barb
900974 1/2 MNPT x 1/2 Hose Barb 1/2 MNPT x 1/2 Hose Barb
900975 1/2 MNPT x 3/4 Hose Barb 1/2 MNPT x 3/4 Hose Barb
900976 3/4 MNPT x 3/8 Hose Barb
900977 3/4 MNPT x 1/2 Hose Barb
900978 3/4 MNPT x 3/4 Hose Barb
900979 3/4 MNPT x 1 Hose Barb
900980 1 MNPT x 3/4 Hose Barb
900981 1 MNPT x 1 Hose Barb
Hose
Hose lengths are 10′, 20′, 30′, 40′, and 50′. Select the hose model number (diameter) and indicate the length with a dash. Example: A model 901845-20 is 1/4″ hose x 20′ (6.1m) long.
Model Description
901845- 1/4″ ID Hose
900689- 3/8″ ID Hose
900690- 1/2″ ID Hose
900063- 3/4″ ID Hose
900064- 1″ ID Hose
Vacuum Gauge
Model Description Thread
900811 Vacuum Gauge
(-30” Hg/-1 BAR/-100 kPa-0)
1/8 MNPT

Vacuum Cup Models and Dimensions

Small Round

Small Round Vacuum Cups are best suited to smooth, flat surfaces. They will grip and release quickly. These cups hold their shape with extended use and grip well to vertical surfaces. Round cups with cleats are better at lifting heavy loads. Cups without cleats can be used for light lifting.

Vacuum Cups – Small Round
Model   A B C D E F G Cleats
900752 in 1.00 1.12 0.25 0.81 0.45 0.17 1/4 FNPT No
mm 25 28 6 21 11 4
900753 in 1.50 0.90 0.28 1.25 1.06 0.12 1/4 FNPT Yes
mm 38 23 7 32 27 3
900754 in 2.00 1.00 0.25 1.56 1.31 0.18 1/4 FNPT Yes
mm 51 25 6 40 33 5
900755 in 2.50 1.80 0.72 1.35 0.95 0.62 1/4 FNPT Yes
mm 64 46 18 34 24 16
900756 in 3.50 1.10 0.56 0.98 0.51 0.37 1/4 FNPT No
mm 89 28 14 25 13 9
Large Round
Large Round

Large Round Vacuum Cups are best suited to smooth, flat surfaces. They will grip and release quickly. These cups hold their shape with extended use and grip well to vertical surfaces. Round cups with cleats are better at lifting heavy loads. Cups without cleats can be used for light lifting.

 

Vacuum Cups – Large Round
Model   A B C D E F G Cleats
900757 in 3.25 1.15 0.50 2.23 1.87 0.37 3/8 FNPT Yes
mm 83 29 13 57 47 9
900758 in 3.25 1.15 0.50 2.23 1.87 0.37 1/4 FNPT Yes
mm 83 29 13 57 47 9
900759 in 4.25 1.18 0.50 2.75 2.43 0.37 3/8 FNPT Yes
mm 108 30 13 70 62 9
900760 in 5.00 1.75 1.12 3.25 2.65 0.62 3/8 FNPT Yes
mm 127 44 28 83 67 16
900761 in 6.00 1.31 0.50 4.75 4.90 0.12 1/2 FNPT Yes
mm 152 33 13 121 124 3
owal
Oval

Oval Vacuum Cups provide the most vacuum due to the larger surface area. They provide more vacuum power than round cups and are suited to lifting heavy loads. They are designed to handle flat rigid sheet materials like wood, glass, cardboard boxes and composites.

Vacuum Cups – Oval
Model   A B C D E F G H Cleats
900762 in 1.00 1.06 0.12 0.81 0.76 0.09 0.50 1/8 MNPT No
mm 25 27 3 21 19 2 13
900763 in 2.00 1.06 0.12 1.81 1.76 0.09 0.50 1/8 MNPT No
mm 51 27 3 46 45 2 13
900764 in 1.73 1.03 0.21 1.35 1.21 0.09 0.87 1/8 MNPT Yes
mm 44 26 5 34 31 2 22
900765 in 2.96 0.93 0.19 0.92 2.34 0.20 1.47 1/8 FNPT No
mm 75 24 5 23 59 5 37
Bellows
Bellows

Bellows Vacuum Cups are best suited to textured, uneven surfaces. The folds, called “convolutions”, provide a collapsible area that allows the cup to quickly compress when it touches the flat surface. The attach and release time is greater due to the significant volume of the cup.

Vacuum Cups – Bellows
Model   A B C D E F G H Cleats
900766 in 0.73 1.43 0.75 0.67 0.45 0.79 3 1/4 FNPT No
mm 19 36 19 17 11 20
900767 in 1.00 1.48 0.85 0.56 0.44 0.85 4 1/8 FNPT No
mm 25 38 22 14 11 22
900768 in 1.50 1.12 0.71 1.06 1.00 0.31 1 1/4 FNPT Yes
mm 38 28 18 27 25 8
900769 in 2.00 1.54 0.89 1.00 1.17 0.68 1 1/4 FNPT Yes
mm 51 39 23 25 30 17
900770 in 2.50 2.40 1.75 1.00 1.12 1.80 2 1/4 FNPT No
mm 64 61 44 25 28 46
900771 in 3.25 3.00 2.20 1.00 1.53 2.00 2 3/8 FNPT No
mm 83 76 56 25 39 51

Choosing a Suitable Vacuum Cup

Vacuum Cup Safety Factor

A safety factor of 2 is recommended when the vacuum cup is positioned horizontally.
A safety factor of 4 is recommended when the vacuum cup is positioned vertically.
Some companies or local codes may require a specific safety factor.

How To Use The Tables Below

Determine the weight of the part to be lifted. Multiply it by the safety factor of (2) when the cup will be positioned horizontally, or by (4) when positioned vertically.

Using the tables below, look through the numbers for the weight capacity per vacuum cup. Use enough vacuum cups to distribute the weight evenly for stable lifting and placement. The model number(s) for the vacuum cup(s) that can handle that weight are directly above(at the top of the same column). Details for each vacuum cup can be found in the next section on this page.

To the left of the vacuum cup weight you’ve selected (in that same row) is the vacuum level that is needed. See performance data for the In-Line E-Vacs designed for specific vacuum levels. For loads that vary, Adjustable E-Vacs are the best choice.

Weight in kilograms that a vacuum cup can hold at a given vacuum
Vacuum Cup Models 900762 900766 900752 900767 900763 900764 900753 900768 900754 900769 900765 900755 900770 900756 900757 900758 900771 900759 900760 900761
Area of cup – cm2 3 5 6 10 11 20 28 32 54 92 127 182
Vacuum kPa 17 0.2 0.4 0.6 0.8 1.0 1.7 2.4 2.7 4.6 7.9 10.9 15.7
34 0.5 0.9 1.1 1.7 2.0 3.5 4.8 5.5 9.2 15.8 21.9 31.5
51 0.7 1.3 1.7 2.5 3.0 5.2 7.3 8.2 13.9 23.7 32.8 47.2
68 0.9 1.7 2.2 3.4 3.9 7.0 9.7 10.9 18.5 31.6 43.7 63.0
71 1.0 1.8 2.3 3.5 4.1 7.3 10.2 11.5 19.4 33.2 45.9 66.1
91 1.3 2.4 3.0 4.5 5.3 9.4 13.1 14.8 25.0 42.7 59.1 85.0

 

Weight in lbs that a vacuum cup can hold at a given vacuum
Vacuum Cup Models 900762 900766 900752 900767 900763 900764 900753 900768 900754 900769 900765 900755 900770 900756 900757 900758 900771 900759 900760 900761
Area of cup – in2 0.4 0.8 1 1.5 1.8 3.1 4.4 4.9 8.3 14.2 19.6 28.3
Vacuum “Hg 5 0.5 1 1.2 1.8 2.2 3.9 5.3 6 10.2 17.4 24.1 34.7
10 1 1.9 2.5 3.7 4.3 7.7 10.7 12.1 20.4 34.8 48.2 69.4
15 1.5 2.9 3.7 5.5 6.5 11.6 16 18.1 30.6 52.3 72.3 104.2
20 2.1 3.9 4.9 7.4 8.7 15.4 21.4 24.1 40.7 69.7 96.4 138.9
21 2.2 4.1 5.2 7.8 9.1 16.2 22.4 25.3 42.8 73.2 101.3 145.8
27 2.8 5.2 6.6 10 11.7 20.8 28.9 32.6 55 94.1 130.2 187.5

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