The mechatronic centric gripper EZU is particularly flexible in workpiece handling thanks to the freely programmable jaw stroke. Thanks to its robust, sealed design and expandable gripping force in StronGrip mode, it meets all the requirements of demanding production and assembly processes. Due to its design and sealing concept, it is particularly suitable for the automated loading and unloading of lathes. The EZU can also be used in the automotive industry, for example for handling shafts or gears.

Advantages – Your benefits

• Flexible workpiece handling
  Cylindrical workpieces of different sizes can be handled efficiently thanks to the extensively adjustable, freely programmable jaw stroke
• High fault tolerance
  The drive train ensures reliable centering of the workpiece and a constantly high gripping force even in the event of horizontal positioning errors of the workpiece or robot
• Increased efficiency
  No start-up distance is required for gripping, which simplifies handling and speeds up the overall process
• High robustness
  The sealed design with the proven sliding guide makes the gripper resistant to harsh operating conditions
• Particularly reliable
  The risk of workpiece loss is minimized thanks to the integrated gripping force maintenance with loss detection
• High availability
  The integrated absolute encoder ensures permanent referencing, even in the event of an emergency stop or power failure
• Easy integration
  The integration effort is significantly reduced thanks to a wide range of communication interfaces, PLC function blocks and robot plug-ins compatible with leading manufacturers

Options and special information

• Gripping modes
  The BasicGrip and StrongGrip gripping modes are available. With BasicGrip continuous operation of the motor and thus permanent re-gripping of the workpiece is possible. The gripping speed is automatically optimized for gripping force adjustment. With StrongGrip, the maximum gripping force is generated and then stored by the gripping force maintenance. Permanent regripping is possible within an adjustable time frame. In addition, defined pause times and maximum ambient temperatures must be taken into account in StrongGrip mode. Further details can be found in the operating manual.
• Maintenance of gripping force
  By combining an electric holding brake with the initial tension of an elastic element, a gripping force of more than 80% of the originally applied gripping force can reliably be maintained in case of an emergency or a voltage drop. If gripping force maintenance and position maintenance are preemptively activated, 100% of the originally applied gripping force can be retained. Overrun of the gripper fingers when removing the workpiece is a few millimeters and depends on the gripping force generated. Variants without gripping force maintenance are also available as an option.
• Seal
  The gripper comes strandard with enhanced protection against the ingress of dust or liquids. The IP protection of the electronics is only given if the plug connectors have been mounted properly. The gearbox of the gripper is additionally protected by a seal on the output pinions.
• Interface of the base jaws
  When the intermediate jaw is used, the interface of the base jaws corresponds to that of the PZN-plus universal gripper. This means that the extensive range of finger accessories for the PZN-plus can also be used for this gripper, taking into account the interfering contours, and the application limits that apply.