Bellows suction cup (round) for very uneven workpieces

Suction cup materialSilicone SI
Material hardness [Shore A]55 Shore A
Thread G1G3/8"-F
Number of folds4.5
SPB4 50 SI-55 G3/8-IG
Attribute Value
d2 30 mm
dn 15 mm
Dmax(S) 51.50 mm
Ds 50.30 mm
G1 G3/8"-F
H 97.50 mm
LG1 12 mm
SW1 27 mm
Z (Stroke) 36.50 mm
Attribute Value
Suction force (-600mbar) 49.50 N
Pull-off force 62 N
Volume 64.55 cm³
Hose diameter (empf.) d 12 mm
Number of folds 4.50
Suction cup material Silicone SI
Material hardness [Shore A] 55 Shore A
Weight 53 g
Product family SPB4


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Ordering information: SPB4 50 SI-55 G3/8-IG

Suction cup SPB4 (elastomer part + connection element) is delivered assembled. The assembly consists of:

  • Suction cup of type SPB4 – elastomer part, available in various diameters
  • Connection element of type SC – available with various threads


Available spare parts: suction cup SPB4, connection element (Schmalz-Connector)

Available accessories: filter screen (sieve, round), hose clamp, pad insert