Vacuum Cups and Suction Cups
Universal 2.5 Bellows Style Vacuum Suction Cups with Interchangeable Fittings


Bellows Suction Cups are Excellent for Concave and Convex Surfaces and Eliminate the Need for Spring Suspensions in Many Cases
2.5 Bellows Vacuum Suction Cups attach gently and easily with minimum pressure. They are excellent for concave and convex shapes as well as on slanted surfaces. Their design can replace mechanical springs, ball swivels and height compensators, allowing for less complicated and more economical installations. Keeping vacuum levels a bit lower extends the life of the suction cups.

Note: The name of these vacuum cups and their labeling does not necessarily reflect the diameter that makes contact with the load. To find the exact diameter, click on the desired vacuum cup below and verify its  “Flared Overall Dia.” specifications.

Vacuum Cup Materials

  • The standard materials are Nitrile (NBR) and Silicone (SIT).
  • For more information on the materials, click here.



   

B2.5-5 through B2.5-25

B2.5-32 through B2.5-88

 

Specifications for 2.5 Bellows Vacuum Suction Cups

RFQ 3D Content Central TraceParts

Product Photo
(Click to Enlarge)

Vacuum Cup
Part Number
and Material

D
Overall
Dia.
in.
(mm)

d
Fitting
Dia.
in.
(mm)

H
Static
Height
in.
(mm)

A
Compressed
Height
in.
(mm)

Volume
in.3
(cm3)

Load
Capacity*

lb.
(kg)
2 to 1

Weight
(Grams)
Fitting
Group
(Click Image for
More Info)
Level
Compensator
Suspensions
(Click Image for
More Info)

 

3D 3D PBA4-ESD
(Electro-Static Dissipative
NOMASTAT®)
0.16
(4.0)
0.16
(4.0)
0.59
(15.0)
48
grams
Group 1 Fittings ANVER SLSA-1 Suspensions

 

3D 3D PBA4-SIT
(Translucent Silicone)
0.16
(4.0)
0.16
(4.0)
0.59
(15.0)
48
grams
Group 1 Fittings ANVER SLSA-1 Suspensions

 

3D 3D PBA4-SI
(Red Silicone)
0.16
(4.0)
0.16
(4.0)
0.59
(15.0)
48
grams
Group 1 Fittings ANVER SLSA-1 Suspensions

 

3D 3D B2.5-5-NBR

B2.5-5-NBR
(Nitrile)
3256

0.22
(5.7)
0.16
(4.0)
0.53
(13.5)
0.41
(10.5)
0.002
(0.04)
65
grams
0.35
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions
    Product Photo Part Number Overall Dia. Fitting Dia. Overall Height Attached Height Volume Capacity Weight Fitting Suspension

 

3D 3D B2.5-5-SIT

B2.5-5-SIT
(Translucent Silicone)
3257

0.22
(5.7)
0.16
(4.0)
0.53
(13.5)
0.41
(10.5)

0.002
(0.04)

65
grams

0.35
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-7-NBR

B2.5-7-NBR
(Nitrile)
3259

0.28
(7.0)
0.16
(4.0)
0.54
(13.6)
0.39
(10.0)

0.003
(0.05)

105
grams
0.59
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D

B2.5-7-SIT
(Translucent Silicone)
3260

0.28
(7.0)
0.16
(4.0)
0.54
(13.6)
0.39
(10.0)

0.003
(0.05)

105
grams

0.59
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-7-NM
(NOMATHANE®)
0.28
(7.0)
0.16
(4.0)
0.54
(13.6)
0.39
(10.0)
0.003
(0.05)
105
grams
0.59
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions
    Product Photo Part Number Overall Dia. Fitting Dia. Overall Height Attached Height Volume Capacity Weight Fitting Suspension

 

3D 3D PBL8-SI PBL8-SI
(Red Silicone)
0.31
(8.0)
0.31
(8.0)
0.83
(21.0)
155
grams
ANVER SLSA-1 Suspensions

 

3D 3D

B2.5-9-NBR
(Nitrile)
3262

0.35
(9.0)
0.16
(4.0)
0.59
(15)
0.47
(12.0)
0.009
(0.15)
174
grams
0.77
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D

B2.5-9-SIT
(Translucent Silicone)
3263

0.35
(9.0)
0.16
(4.0)
0.59
(15)
0.47
(12.0)

0.009
(0.15)

174
grams

0.77
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-9-NM
(NOMATHANE®)
0.35
(9.0)
0.16
(4.0)
0.59
(15)
0.47
(12.0)

0.009
(0.15)

174
grams

0.77
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions
    Product Photo Part Number Overall Dia. Fitting Dia. Overall Height Attached Height Volume Capacity Weight Fitting Suspension

 

3D 3D PBL10-SI
(Red Silicone)
0.39
(10.0)
0.31
(8.0)
0.85
(21.5)
225
grams
ANVER SLSA-1 Suspensions

 

3D 3D B2.5-14-NBR

B2.5-14-NBR
(Nitrile)
3265

0.59
(15.0)
0.16
(4.0)
0.92
(23.3)
0.51
(13.0)
0.059
(0.98)
1.0
(0.45)
1.59
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-14-SIT

B2.5-14-SIT
(Translucent Silicone)
3266

0.59
(15.0)
0.16
(4.0)
0.92
(23.3)
0.51
(13.0)

0.059
(0.98)

1.0
(0.45)

1.59
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-14-NM
(NOMATHANE®)
0.59
(15.0)
0.16
(4.0)
0.92
(23.3)
0.51
(13.0)
0.059
(0.98)
1.0
(0.45)
1.59
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions
    Product Photo Part Number Overall Dia. Fitting Dia. Overall Height Attached Height Volume Capacity Weight Fitting Suspension

 

3D 3D PBL16-SI PBL16-SI
(Red Silicone)
0.63
(16)
0.31
(8.0)
0.83
(21)
1.1
(0.5)
ANVER SLSA-1 Suspensions

 

3D 3D B2.5-18-NBR

B2.5-18-NBR
(Nitrile)
3268

0.72
(18.3)
0.16
(4.0)
0.90
(22.8)
0.51
(13.0)
0.082
(1.35)
1.5
(0.68)
1.93
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-18-SIT

B2.5-18-SIT
(Translucent Silicone)
3269

0.72
(18.3)
0.16
(4.0)
0.90
(22.8)
0.51
(13.0)

0.082
(1.35)

1.5
(0.68)

1.93
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-18-NM
(NOMATHANE®)
0.72
(18.3)
0.16
(4.0)
0.90
(22.8)
0.51
(13.0)
0.082
(1.35)
1.5
(0.68)
1.93
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions
    Product Photo Part Number Overall Dia. Fitting Dia. Overall Height Attached Height Volume Capacity Weight Fitting Suspension

 

3D 3D

B2.5-20-NBR
(Nitrile)
3271

0.79
(20.0)
0.16
(4.0)
0.88
(22.4)
0.51
(13.0)
0.122
(2.00)
1.9
(0.86)
2.39
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D

B2.5-20-SIT
(Translucent Silicone)
3272

0.79
(20.0)
0.16
(4.0)
0.88
(22.4)
0.51
(13.0)

0.122
(2.00)

1.9
(0.86)

2.39
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-20-NM
(NOMATHANE®)
0.79
(20.0)
0.16
(4.0)
0.88
(22.4)
0.51
(13.0)
0.122
(2.00)
1.9
(0.86)
2.39
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D PBL22-SI
(Red Silicone)
0.87
(22)
0.31
(8.0)
0.85
(21.5)
2.24
(1.01)
ANVER SLSA-1 Suspensions
    Product Photo Part Number Overall Dia. Fitting Dia. Overall Height Attached Height Volume Capacity Weight Fitting Suspension

 

3D 3D B2.5-25-NBR

B2.5-25-NBR
(Nitrile)

0.98
(25.0)
0.16
(4.0)
1.32
(33.4)
0.63
(16.0)
0.330
(5.40)
2.00
(0.90)
4.09
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-25-SIT

B2.5-25-SIT
(Translucent Silicone)

0.98
(25.0)
0.16
(4.0)
1.32
(33.4)
0.63
(16.0)

0.330
(5.40)

2.00
(0.90)

4.09
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-25-NM
(NOMATHANE®)
0.98
(25.0)
0.16
(4.0)
1.32
(33.4)
0.63
(16.0)
0.330
(5.40)
2.00
(0.90)
4.09
Grams
Group 1 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-32-NBR

B2.5-32-NBR
(Nitrile)
3274

1.26
(32.0)
0.31
(8.0)
1.48
(37.5)
0.91
(23.0)
0.610
(10.00)
3.80
(1.70)
11.40
Grams
Group 2 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions
    Product Photo Part Number Overall Dia. Fitting Dia. Overall Height Attached Height Volume Capacity Weight Fitting Suspension
3D 3D B2.5-32-SIT

B2.5-32-SIT
(Translucent Silicone)
3275

1.26
(32.0)
0.31
(8.0)
1.48
(37.5)
0.91
(23.0)

0.610
(10.00)

3.80
(1.70)

11.40
Grams
Group 2 Fittings  SLSA-1 Suspensions
 SLSA-2 Suspensions
     b2_5-32-nmthumb  

B2.5-32-NM
(NOMATHANE®)

 1.26
(32.0)
 0.31
(8.0)
 1.48
(37.5)
 0.91
(23.0)
 

0.610
(10.00)

 

3.80
(1.70)

 11.40
Grams
 Group 2 Fittings  SLSA-1 Suspensions
 SLSA-2 Suspensions

 

3D 3D B2.5-42-SIT

B2.5-42-NBR
(Nitrile)
3277

1.69
(43.0)
0.31
(8.0)
1.81
(46.0)
0.94
(24.0)
1.190
(19.50)
6.7
(3.0)
21.00
Grams
Group 2 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-42-SIT

B2.5-42-SIT
(Translucent Silicone)
3278

1.69
(43.0)
0.31
(8.0)
1.81
(46.0)
0.94
(24.0)

1.190
(19.50)

6.7
(3.0)

21.00
Grams
Group 2 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-62-NBR

B2.5-62-NBR
(Nitrile)
3280

2.36
(60.0)
0.31
(8.0)
2.13
(54.0)
0.94
(24.0)
4.420
(72.50)
13.00
(6.10)
46.90
Grams
Group 2 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions
    Product Photo Part Number Overall Dia. Fitting Dia. Overall Height Attached Height Volume Capacity Weight Fitting Suspension

 

3D 3D B2.5-62-SIT

B2.5-62-SIT
(Translucent Silicone)
3281

2.36
(60.0)
0.31
(8.0)
2.13
(54.0)
0.94
(24.0)

4.420
(72.50)

13.00
(6.10)

46.90
Grams
Group 2 Fittings SLSA-1 Suspensions
SLSA-2 Suspensions

 

3D 3D B2.5-88-NBR

B2.5-88-NBR
(Nitrile)
3283

3.46
(88.0)
0.47
(12.0)
3.35
(85.0)
1.54
(39.0)
10.100
(165.00)
36.00
(16.80)
190.40
Grams
Group 3 Fittings SLSA-2 Suspensions

 

3D 3D B2.5-88-SIT

B2.5-88-SIT
(Translucent Silicone)
3284

3.46
(88.0)
0.47
(12.0)
3.35
(85.0)
1.54
(39.0)

10.100
(165.00)

36.00
(16.80)

190.40
Grams
Group 3 Fittings SLSA-2 Suspensions

 

Vacuum Suction Cup Fittings Group 1
Group 1 Fittings
Vacuum Suction Cup Fittings Group 2
Group 2 Fittings
Vacuum Suction Cup Fittings Group 3
Group 3 Fittings

Group 1 Fittings

Group 2 Fittings

Group 3 Fittings

Other Fitting

Notes:

  • The cup capacities shown above ( * ) are theoretical capacities based on 24″Hg at sea level with a safety factor of two (2) and a ± 5% margin of error. This is the US ANSI ASME Standard B30.20 for vacuum lifter specifications and is commonly used in North America as a design capacity for vacuum components. When used in vertical applications, take these values and divide again by 2 to obtain a 4 to 1 safety factor per the ANSI specifications. These are realistic working capacities when designing equipment.

  • Other manufacturers use a pull-off figure at 27″Hg to show a high capacity value for their cups. This is accurate, but requires users to do all the math themselves to build in safety factors. The values are basically the same, but it is necessary to calculate the working capacities with a safety factor via the following formula at sea level:

Pull-off value (at 27″Hg) = ANVER’s Listed Capacity x 2 x 1.125 (at 24″Hg)
                                 

  • For example: ANVER vacuum cup number F52 has a rated capacity of 15.10 lb at 24″Hg. The pull-off capacity at 27″Hg for this cup would be 15.10 x 2 x 1.125 = 33.98 lbs.  From this point, it is necessary to calculate the safety factor based on the vacuum level being used, and the altitude.

  •  To ensure safety, 80% of actual overall diameter is used when determining Load Capacity.

 

Click Here to See More Details of Different Suction Cup and Vacuum Cup Materials

 

More Information
Vacuum Lifting Attachment with Bellows Vacuum Cups
These Cups can be Used
to Build Special Attachments

Bellows Cups
in Action