Schunk PZH-SF takes a grip on many diameters
1 min read
Just one concentric gripper can now be used when components of different sizes have to be handled in succession. The Schunk PZH-SF large stroke gripper can cover an enormous spectrum of components and diameters with its swivelling fingers, says the company.
Instead of changing the top jaws or the complete gripper again and again, the fingers of the PZH-SF just swivel into another position. The opening stroke per finger amounts to 113 mm in radial direction. Depending on the jaw position, the gripper handles components with diameters between 100 and 430 mm.
Schunk believes the PZH-SF is the largest standard concentric gripper where the fingers swivel in the same direction now on the market. Also, compared with conventional concentric grippers, the PZH-SF transmits a power ratio nearly double to its volume and mass. With a gripping force of 1,500 N it handles workpieces up to 11.8 kg (at a friction coefficient of 1 micron = 0.1) and achieves a safety factor that is twice as high.
For larger diameters or special requirements, the length and the orientation of the three swivelling arms and also the length and shape of the fingers, can be individually adjusted. Moreover, monitoring can now be carried out reliably by magnetic field sensors or inductive sensors.
