Choosing a Suitable Vacuum Cup

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 32°F to 125°F.

Saugnäpfe E-Vac Vacuum Cups
Large Round Vacuum Generator Cups

Round 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.

Small Round
Model A B C D E F G Tunnel
900752 in 1,00 1,12 0,25 0,81 0,45 0,17 1/4 NPTF No
mm 25 28 6 21 11 4
900753 in 1,50 0,90 0,28 1,25 1,06 0,12 1/4 NPTF Yes
mm 38 23 7 32 27 3
900754 in 2,00 1,00 0,25 1,56 1,31 0,18 1/4 NPTF Yes
mm 51 25 6 40 33 5
900755 in 2,50 1,80 0,72 1,35 0,95 0,62 1/4 NPTF Yes
mm 64 46 18 34 24 16
900756 in 3,50 1,10 0,56 0,98 0,51 0,37 1/4 NPTF No
mm 89 28 14 25 13 9
Large Round Vacuum Generator Cups
Large Round
Model A B C D E F G Tunnel
900757 in 3,25 1,15 0,50 2,23 1,87 0,37 3/8 NPTF Yes
mm 83 29 13 57 47 9
900758 in 3,25 1,15 0,50 2,23 1,87 0,37 1/4 NPTF Yes
mm 83 29 13 57 47 9
900759 in 4,25 1,18 0,50 2,75 2,43 0,37 3/8 NPTF Yes
mm 108 30 13 70 62 9
900760 in 5,00 1,75 1,12 3,25 2,65 0,62 3/8 NPTF Yes
mm 127 44 28 83 67 16
900761 in 6,00 1,31 0,50 4,75 4,90 0,12 1/4 NPTF Yes
mm 152 33 13 121 124 3
Oval Vacuum Generator Cup

Oval 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.

Oval
Model A B C D E F G H Tunnel
900762 in 1,00 1,06 0,12 0,81 0,76 0,09 0,50 1/8 FNPT 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 FNPT 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 FNPT 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 Vacuum Generator Cup

Bellows 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.

Bellows Cups
Model A B C D E F G H Tunnel
900766 in 0,73 1,43 0,75 0,67 0,45 0,79 3 1/4 MNPT 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 MNPT 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 MNPT 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 MNPT 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 MNPT 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 MNPT No
mm 83 76 56 25 39 51

Vacuum Cup Selection

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

A safety factor or 2 is recommended when the vacuum cup is positioned horizantally.

A safety factor of 4 is recommended when the vacuum cup is positioned vertically.

Some companies or local codes may required a specific safety factor.

Weight in lbs that a vacuum cup can hold at a given pressure
Vacuum Cup-Models 900762 900766 900752 900767 900763 900764 900753 900768 900754 900769 900765 900755 900770 900756 900757 900758 900771 900759 900760 900761
Lip Diameter of Vacuum Cup in cm2 0,4 0,8 1,0 1,5 1,8 3,1 4,4 4,9 8,3 14,2 19,6 28,3
Vacuum in “Hg 5 0,5 1,0 1,2 1,8 2,2 3,9 5,3 6,0 10,2 17,4 24,1 34,7
10 1,0 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 16,0 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 10,0 11,7 20,8 28,9 32,6 55,0 94,1 130,2 187,5
Weight in kilogram that a vacuum cup can hold at a given pressure
Vacuum Cup-Models 900762 900766 900752 900767 900763 900764 900753 900768 900754 900769 900765 900755 900770 900756 900757 900758 900771 900759 900760 900761
Lip Diameter of Vacuum Cup in cm2 3 5 6 10 11 20 28 32 54 92 127 182
Vacuum in 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