Bellows suction cup (round) with optimal adaptation to uneven surfaces

Size20
Suction cup materialNitrile rubber NBR-ESD
Material hardness [Shore A]55 Shore A
Nipple materialAluminum
ConnectionM5-M
Number of folds1.5
Vacuum connectionM5-M
FSGA 20 NBR-ESD-55 M5-AG
Attribute Value
d2 11 mm
Dmax(S) 21 mm
dn 2.50 mm
Ds 18.10 mm
G1 M5-M
H 20.20 mm
LG1 5 mm
SW1 7 mm
Z (Stroke) 5 mm


Note: Acceptable dimensional tolerances for elastomer parts concerning to DIN ISO 3302-1 M3
Attribute Value
Suction cup material Nitrile rubber NBR-ESD
Material hardness [Shore A] 55 Shore A
Size 20
Number of folds 1.50
Connection M5-AG
Curve radius (min) (convex) 20 mm
Volume 1.15 cm³
Suction force (-600mbar) 4.70 N
Pull-off force 10.70 N
Hose diameter (empf.) d 2 mm
Weight 2.70 g
Product family FSGA


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

Ordering information: FSGA 20 NBR-ESD-55 M5-AG

Suction cup FSGA (elastomer part + connection nipple) is delivered unassembled (diameters of 33 mm and more are assembled). The delivery consists of:

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


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