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CONVUM_PB

2-Bellows Thick-Lip Suction Cups

  • PB Series are 2-bellows suction cups with a thick lip. They are suited for workpieces with oblique surfaces and for tight layouts where there is no space for attaching spring type fittings. A wide range of cup sizes and various fittings are available.
  • Brand CONVUM Ltd.
Features
  • 2-bellows thick lip: the thick lip and bellows stroke provide good conformity and cushioning.
  • For oblique workpieces: suitable for suction and handling of workpieces with oblique surfaces.
  • Works well when spring fittings cannot be used: ideal for space-limited fixture layouts.
  • Wide pad diameter range: Φ10, Φ15, Φ20, Φ30, Φ40, Φ50, Φ75, Φ110, Φ150.
  • Multiple material and fitting options: various rubber materials and fitting combinations (fixed / spring / non-rotating) are available.
Specification

 

 

Item規格
Pad typePB 2-Bellows Vacuum Suction Cups (Thick-Lip Type)
suitable for vacuum handling applications requiring conformity + stroke/level compensation
Recommended applicationsSuction/handling of oblique workpieces; conformity on curved or slightly uneven surfaces;
also suitable for pick-and-place fixtures where space is limited and spring fittings cannot be installed
Pad diameter (mm)Φ10, Φ15, Φ20, Φ30, Φ40, Φ50, Φ75, Φ110, Φ150
(covers small to large pad diameters)
Material code / MaterialN: NBR, S: Silicone, U: Urethane, F: FKM, NE: Conductive NBR, SE: Conductive silicone
(for general / harsh-environment / ESD-control needs)
Fitting types
(mounting / port direction)
Fixed fittings: PBTK (top port), PBYK (side port)
Spring fittings: NAPBTS (top), NAPBYS (side)
Anti-rotation spring fittings: NAPBTH (top), NAPBYH (side)
Compact spring fitting: PSS
Stroke (mm)Φ10 /Φ15: 3, 10, 15
Φ20–Φ50: 6, 15, 30
Φ75: 10, 30, 50
Φ110–Φ150: 20, 50
(Select by pad diameter and fitting combination)
FAQ

Q1: What is the PB Series?
A: PB is a vacuum suction cup series featuring a 2-bellows design with a thick lip. It is positioned as a bellows-type cup for applications needing conformity and cushioning.


Q2: What surface condition is PB best suited for?
A: PB is suited for workpieces with an oblique suction surface.


Q3: When should I choose PB instead of adding a spring fitting?
A: Choose PB when there is no space for attaching a spring type fitting due to layout constraints.


Q4: What does "thick lip" mean for selection?
A: PB's key construction is a thick lip with 2 bellows—treat this as the core design point for oblique surfaces and space-limited setups.


Q5: Does PB offer many size options?
A: Yes. PB provides a wide range of cup sizes, allowing selection based on contact area and mounting constraints.


Q6: What fitting options are available for PB?
A: PB offers various fittings for many kinds of applications; select the fitting/port style that matches your mounting method.


Q7: What is PBG and how is it related to PB?
A: PBG is the bellows pad (cup rubber only) for the PB Series.


Q8: What is the recommended selection checklist for PB?
A: Confirm in order:
     1) whether the surface is oblique; 2) whether there is no space for spring fittings; 3) required size range; 4) required fitting type. These are the key selection factors for PB.

File Downloads
File Name
File Type
Download
2-Bellows Thick-Lip Suction Cups PB Series_E
PDF
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