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.
