Bellows suction cup (round) for very uneven workpieces

Size4
Suction cup materialNitrile rubber NBR
Material hardness [Shore A]55 Shore A
Nipple materialAluminum
ConnectionM5-F
Number of folds2.5
Vacuum connectionM5-F
FSG 4 NBR-55 M5-IG
Attribute Value
d2 2.40 mm
dn 2 mm
Dmax(S) 5.50 mm
Ds 3.80 mm
G1 M5-F
H 24 mm
LG1 5.50 mm
SW1 8 mm
Z (Stroke) 1.50 mm


Note: Acceptable dimensional tolerances for elastomer parts concerning to DIN ISO 3302-1 M3
Attribute Value
Suction cup material Nitrile rubber NBR
Material hardness [Shore A] 55 Shore A
Size 4
Number of folds 2.50
Connection M5-IG
Curve radius (min) (convex) 4 mm
Volume 0.05 cm³
Suction force (-600mbar) 0.27 N
Pull-off force 0.60 N
Hose diameter (empf.) d 2 mm
Weight 1.80 g
Product family FSG


Note: Suction force: The specified suction forces are theoretical values at a vacuum of -0.6 bar and with a dry, smooth and flat workpiece surface - they do not include a safety factor Pull-off force: The pull-off force of the versions made of natural rubber is reduced by about 40% Hose diameter: The recommended hose diameter refers to a hose length of approx. 2 m

Digital Twin

There is a CAD model available as digital twin including additional information for this product.

Ordering information: FSG 4 NBR-55 M5-IG

Suction cup FSG (elastomer part + connection nipple) is delivered unassembled. The delivery consists of:

  • Suction cup of type FG – elastomer part, available in various diameters and materials
  • Connection nipple of type SA-NIP – available with various threads


Available spare parts: suction cup FG, connection nipple SA-NIP