Piab GRZ Blue Line Grippers Review: Specs, Price and Applications
The Piab GRZ Blue Line grippers, models GRZ 22 G and GRZ 20-22 G, are compact pneumatic grippers with strong grip force, typically used on injection molding EOAT for sprue and part gripping.
They operate at up to 87 psi (6 bar) on clean, dry air, have an anodized finish and are available with standard, radiused or sensor jaws (suffix CT, SCC or STC). Standard mounting holes and two body designs add mounting options.
Quick Verdict
Strong, compact grippers that bring high clamping force to molding EOAT, with jaw choices and sensing for reliable sprue removal.
Piab GRZ Blue Line Grippers at a Glance
Specification | Details |
Gripper type | Pneumatic gripper |
Models | GRZ 22 G, GRZ 20-22 G |
Max air pressure | 87 psi (6 bar) |
Air quality | Clean, dry air |
Finish | Anodized |
Jaws | Standard, radiused or sensor (CT, SCC, STC) |
Mounting | Standard holes, two body designs |
Force | High clamping force for its size |
Price | Request a quote |
Design and Operating Principle
Sprue and runner gripping needs high clamping force in a small package, because the gripper sits close to the mold and the sprue is gripped at its tip. The GRZ Blue Line is designed for maximum force in its size class.
Radiused jaws suit round sprues, while sensor jaws confirm the sprue has been gripped, which is critical before the robot moves out of the mold.
Two body designs allow mounting in different orientations on EOAT frames.
Integration and Selection
Mount on EOAT using the standard holes and choose jaws for the sprue geometry. Wire sensor jaws to the robot controller for part confirmation.
Keep air clean and dry and below 87 psi.
Industry Applications
Industry | Typical use |
Injection molding | Sprue and runner removal |
Plastics | Part gripping |
Packaging | Small-part handling |
Automotive | Removing molded components |
Functional Uses
Sprue picking
Part confirmation via sensor jaws
Compact high-force gripping
Flexible EOAT mounting
Pros and Cons
Advantages
High clamping force
Sensor jaw options
Anodized finish
Two body designs
Limitations
Max 87 psi
Clean dry air required
Primarily for molding EOAT
Who Should Consider the Piab GRZ Blue Line Grippers?
The GRZ Blue Line suits injection molding EOAT builders needing strong sprue grippers.
Price and Availability
Price: Request a quote. Piab prices GRZ Blue Line grippers by configuration, options and quantity. Budget for the complete solution, including mounting, vacuum or air supply, valves, sensors and commissioning, rather than the component alone.
Further Reading
Piab GRZ Blue Line Grippers FAQ
What models are in the Blue Line?
GRZ 22 G and GRZ 20-22 G.
What is the maximum pressure?
87 psi (6 bar).
Which jaws are available?
Standard, radiused and sensor jaws.
How are sensor jaws marked?
With the suffix CT, SCC or STC.
What finish do they have?
Anodized.
How much do they cost?
Request a quote from Piab.
