Piab GRZ Family of Grippers Review: Specs, Price and Applications
The Piab GRZ family covers grippers for parts from very small to heavy and bulky. At the small end, the Micro GRZ 10-6 weighs 8 grams and is described as the smallest gripper on the market, while the Mini GRZ 10-8C weighs 14 grams with a built-in sensor.
All GRZ bodies have been redesigned to cover the jaw springs, keeping debris and sprue from interfering. The larger GRZ 20-22 and 20-22C are heavy-duty models for very heavy parts in harsh environments, using jaw screws instead of pins and hard stops for adjustable closing positions.
Quick Verdict
A complete gripper family for molding EOAT, from featherweight micro grippers to heavy-duty clampers, with practical design details that reduce downtime.
Piab GRZ Family of Grippers at a Glance
Specification | Details |
Gripper type | Pneumatic grippers |
Micro GRZ 10-6 | 8 g |
Mini GRZ 10-8C | 14 g, built-in sensor |
Heavy duty | GRZ 20-22 and 20-22C |
Spring protection | Body covers jaw springs |
Jaw retention | Jaw screws instead of pins (heavy duty) |
Adjustment | Hard stops for closing position |
Price | Request a quote |
Design and Operating Principle
On fast molding robots every gram counts, so an 8 g micro gripper lets EOAT carry many grippers without adding inertia. The 14 g Mini with built-in sensor provides confirmation in the same small package.
Covered jaw springs are a small but valuable change: plastic debris and sprue fragments can jam exposed springs, causing missed grips.
Heavy-duty models use screws instead of pins for jaw retention and adjustable hard stops so the closing position can be set to the part, avoiding crushing.
Integration and Selection
Choose micro and mini sizes for light sprues and small parts, and heavy-duty models for heavy runners or parts. Use sensors where grip confirmation is required.
Set hard stops on heavy-duty models to match part thickness.
Industry Applications
Industry | Typical use |
Injection molding | Sprue and part removal |
Plastics | EOAT for take-out robots |
Automotive | Heavy molded parts |
Consumer goods | Small molded components |
Functional Uses
Micro part gripping
Sprue removal
Heavy part clamping
Grip confirmation
Pros and Cons
Advantages
Very light micro models
Built-in sensor option
Debris-protected springs
Adjustable hard stops
Limitations
Force data per model from Piab
Pneumatic supply required
Molding focus
Who Should Consider the Piab GRZ Family of Grippers?
The GRZ family suits molders building EOAT for parts of all sizes.
Price and Availability
Price: Request a quote. Piab prices GRZ 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 Family of Grippers FAQ
How light is the smallest GRZ?
The Micro GRZ 10-6 weighs 8 grams.
Which model has a built-in sensor?
The Mini GRZ 10-8C, weighing 14 grams.
Which are heavy-duty models?
GRZ 20-22 and GRZ 20-22C.
Why cover the jaw springs?
To keep debris or sprue from interfering.
Can closing position be adjusted?
Yes, with hard stops on heavy-duty jaws.
How much do they cost?
Request a quote from Piab.
