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Two-Finger Radial Gripper with Maximum Power Density

May 18, 2010
Schunks PRG combines high gripping moments with small dimensional control

Schunck’s radial gripper has an adjustable stroke to fit the individual application and is available with a gripping force safety device

Schunk says its new PRG two-finger radial gripper combines high gripping moments with small dimensions. The integrated pneumatic oval piston drive guarantees maximum power density.

Often, radial gripping motions are achieved by integrating a slotted link gear. Existing links cause an extreme reduction in the gripping moment, if the opening angles are rather small.

According to Schunk, its solution for this is a patented, Single-Pin guide rail that ensures a constant closing moment throughout the gripping range. The new PRG does not change in dimensions and can reliably grip larger workpieces or workpieces with a larger tolerance range. Also, innovative dampening, which is directly integrated in the drive rod, allows short cycle times and a much longer admissible finger length.

The multifunctional PRG has an adjustable stroke to fit the individual application and is also available with a gripping force safety device, in a high-temperature version and with three different opening angles (30 degrees / 60 degrees / 90 degrees). The end position can be optionally monitored by inductive proximity switches or magnetic switches.