Pneumatic O-Ring Grippers

OPR – PM 6-Finger

OPR and PM are innovative multi-finger grippers for handling and assembling O-rings


  • They are specifically designed with an independent device which expands the gasket and another which subsequently ejects it for assembling.
  • Ability to assemble particularly thick gaskets and to position them in seats which are located at a distance from the ends of the housing.
  • Adjustable stroke suitable for different O-ring sizes.
  • Robust lightweight housing made of hard-coated aluminum alloy.
  • OPR50 includes specially designed fingers.
Datasheet3D DrawingModelNr. of fingers/jawsStroke per jawEjector strokeTheoretical opening torque
@6 bar
Force per jaw
@6 bar
Ejector forceWeightRepeat accuracy
The dimensions are indicative and susceptible to changes due to technical improvements. We reserve the right to make changes without notice.
OPR50-167.5 mm23.5 Nm-118 N0.7 kg± 0.05 mm
OPR50-267.5 mm23.5 Nm-118 N0.77 kg± 0.05 mm
PM0661.85-5mm5 mm-158 N540 N1 kg± 0.05 mm
PM06-163.35-6.5mm5 mm-158 N540 N1 kg± 0.05 mm
PM06-264.85-8mm7.5 mm-158 N540 N1.3 kg± 0.05 mm

Operating pressure 4 – 8 bar
Ambient temperature 5-60°C
Sound emissions (sound pressure) ≤ 70 db (A) in each direction